library/smarty/README
author Markus Bröker <broeker.markus@googlemail.com>
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Smarty 3.x
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Author: Monte Ohrt <monte at ohrt dot com >
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Author: Uwe Tews
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AN INTRODUCTION TO SMARTY 3
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NOTICE FOR 3.1 release:
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Please see the SMARTY_3.1_NOTES.txt file that comes with the distribution.
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NOTICE for 3.0.5 release:
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Smarty now follows the PHP error_reporting level by default. If PHP does not mask E_NOTICE and you try to access an unset template variable, you will now get an E_NOTICE warning. To revert to the old behavior:
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$smarty->error_reporting = E_ALL & ~E_NOTICE;
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NOTICE for 3.0 release:
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IMPORTANT: Some API adjustments have been made between the RC4 and 3.0 release.
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We felt it is better to make these now instead of after a 3.0 release, then have to
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immediately deprecate APIs in 3.1. Online documentation has been updated
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to reflect these changes. Specifically:
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---- API CHANGES RC4 -> 3.0 ----
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$smarty->register->*
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$smarty->unregister->*
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$smarty->utility->*
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$samrty->cache->*
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Have all been changed to local method calls such as:
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$smarty->clearAllCache()
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$smarty->registerFoo()
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$smarty->unregisterFoo()
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$smarty->testInstall()
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etc.
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Registration of function, block, compiler, and modifier plugins have been
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consolidated under two API calls:
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$smarty->registerPlugin(...)
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$smarty->unregisterPlugin(...)
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Registration of pre, post, output and variable filters have been
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consolidated under two API calls:
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$smarty->registerFilter(...)
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$smarty->unregisterFilter(...)
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Please refer to the online documentation for all specific changes:
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http://www.smarty.net/documentation
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----
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The Smarty 3 API has been refactored to a syntax geared
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for consistency and modularity. The Smarty 2 API syntax is still supported, but
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will throw a deprecation notice. You can disable the notices, but it is highly
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recommended to adjust your syntax to Smarty 3, as the Smarty 2 syntax must run
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through an extra rerouting wrapper.
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Basically, all Smarty methods now follow the "fooBarBaz" camel case syntax. Also,
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all Smarty properties now have getters and setters. So for example, the property
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$smarty->cache_dir can be set with $smarty->setCacheDir('foo/') and can be
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retrieved with $smarty->getCacheDir().
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Some of the Smarty 3 APIs have been revoked such as the "is*" methods that were
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just duplicate functions of the now available "get*" methods.
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Here is a rundown of the Smarty 3 API:
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$smarty->fetch($template, $cache_id = null, $compile_id = null, $parent = null)
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$smarty->display($template, $cache_id = null, $compile_id = null, $parent = null)
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$smarty->isCached($template, $cache_id = null, $compile_id = null)
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$smarty->createData($parent = null)
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$smarty->createTemplate($template, $cache_id = null, $compile_id = null, $parent = null)
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$smarty->enableSecurity()
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$smarty->disableSecurity()
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$smarty->setTemplateDir($template_dir)
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$smarty->addTemplateDir($template_dir)
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$smarty->templateExists($resource_name)
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$smarty->loadPlugin($plugin_name, $check = true)
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$smarty->loadFilter($type, $name)
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$smarty->setExceptionHandler($handler)
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$smarty->addPluginsDir($plugins_dir)
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$smarty->getGlobal($varname = null)
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$smarty->getRegisteredObject($name)
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$smarty->getDebugTemplate()
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$smarty->setDebugTemplate($tpl_name)
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$smarty->assign($tpl_var, $value = null, $nocache = false)
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$smarty->assignGlobal($varname, $value = null, $nocache = false)
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$smarty->assignByRef($tpl_var, &$value, $nocache = false)
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$smarty->append($tpl_var, $value = null, $merge = false, $nocache = false)
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$smarty->appendByRef($tpl_var, &$value, $merge = false)
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$smarty->clearAssign($tpl_var)
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$smarty->clearAllAssign()
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$smarty->configLoad($config_file, $sections = null)
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$smarty->getVariable($variable, $_ptr = null, $search_parents = true, $error_enable = true)
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$smarty->getConfigVariable($variable)
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$smarty->getStreamVariable($variable)
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$smarty->getConfigVars($varname = null)
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$smarty->clearConfig($varname = null)
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$smarty->getTemplateVars($varname = null, $_ptr = null, $search_parents = true)
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$smarty->clearAllCache($exp_time = null, $type = null)
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$smarty->clearCache($template_name, $cache_id = null, $compile_id = null, $exp_time = null, $type = null)
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$smarty->registerPlugin($type, $tag, $callback, $cacheable = true, $cache_attr = array())
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$smarty->registerObject($object_name, $object_impl, $allowed = array(), $smarty_args = true, $block_methods = array())
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$smarty->registerFilter($type, $function_name)
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$smarty->registerResource($resource_type, $function_names)
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$smarty->registerDefaultPluginHandler($function_name)
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$smarty->registerDefaultTemplateHandler($function_name)
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$smarty->unregisterPlugin($type, $tag)
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$smarty->unregisterObject($object_name)
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$smarty->unregisterFilter($type, $function_name)
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$smarty->unregisterResource($resource_type)
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$smarty->compileAllTemplates($extension = '.tpl', $force_compile = false, $time_limit = 0, $max_errors = null)
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$smarty->clearCompiledTemplate($resource_name = null, $compile_id = null, $exp_time = null)
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$smarty->testInstall()
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// then all the getters/setters, available for all properties. Here are a few:
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$caching = $smarty->getCaching();      // get $smarty->caching
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$smarty->setCaching(true);             // set $smarty->caching
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$smarty->setDeprecationNotices(false); // set $smarty->deprecation_notices
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$smarty->setCacheId($id);              // set $smarty->cache_id
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$debugging = $smarty->getDebugging();  // get $smarty->debugging
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FILE STRUCTURE
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The Smarty 3 file structure is similar to Smarty 2:
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/libs/
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  Smarty.class.php
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/libs/sysplugins/
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  internal.*
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/libs/plugins/
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  function.mailto.php
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  modifier.escape.php
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  ...
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A lot of Smarty 3 core functionality lies in the sysplugins directory; you do
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not need to change any files here. The /libs/plugins/ folder is where Smarty
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plugins are located. You can add your own here, or create a separate plugin
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directory, just the same as Smarty 2. You will still need to create your own
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/cache/, /templates/, /templates_c/, /configs/ folders. Be sure /cache/ and
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/templates_c/ are writable.
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The typical way to use Smarty 3 should also look familiar:
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require('Smarty.class.php');
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$smarty = new Smarty;
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$smarty->assign('foo','bar');
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$smarty->display('index.tpl');
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However, Smarty 3 works completely different on the inside. Smarty 3 is mostly
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backward compatible with Smarty 2, except for the following items:
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*) Smarty 3 is PHP 5 only. It will not work with PHP 4.
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*) The {php} tag is disabled by default. Enable with $smarty->allow_php_tag=true.
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*) Delimiters surrounded by whitespace are no longer treated as Smarty tags.
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   Therefore, { foo } will not compile as a tag, you must use {foo}. This change
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   Makes Javascript/CSS easier to work with, eliminating the need for {literal}.
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   This can be disabled by setting $smarty->auto_literal = false;
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*) The Smarty 3 API is a bit different. Many Smarty 2 API calls are deprecated
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   but still work. You will want to update your calls to Smarty 3 for maximum
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   efficiency.
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There are many things that are new to Smarty 3. Here are the notable items:
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LEXER/PARSER
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============
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Smarty 3 now uses a lexing tokenizer for its parser/compiler. Basically, this
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means Smarty has some syntax additions that make life easier such as in-template
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math, shorter/intuitive function parameter options, infinite function recursion,
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more accurate error handling, etc.
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WHAT IS NEW IN SMARTY TEMPLATE SYNTAX
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=====================================
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Smarty 3 allows expressions almost anywhere. Expressions can include PHP
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functions as long as they are not disabled by the security policy, object
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methods and properties, etc. The {math} plugin is no longer necessary but
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is still supported for BC.
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Examples:
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{$x+$y}                           will output the sum of x and y.
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{$foo = strlen($bar)}             function in assignment
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{assign var=foo value= $x+$y}     in attributes 
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{$foo = myfunct( ($x+$y)*3 )}     as function parameter 
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{$foo[$x+3]}                      as array index
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Smarty tags can be used as values within other tags.
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Example:  {$foo={counter}+3}
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Smarty tags can also be used inside double quoted strings.
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Example:  {$foo="this is message {counter}"}
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You can define arrays within templates.
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Examples:
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{assign var=foo value=[1,2,3]}
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{assign var=foo value=['y'=>'yellow','b'=>'blue']}
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Arrays can be nested.
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{assign var=foo value=[1,[9,8],3]}
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There is a new short syntax supported for assigning variables.
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Example: {$foo=$bar+2}
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You can assign a value to a specific array element. If the variable exists but
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is not an array, it is converted to an array before the new values are assigned.
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Examples:
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{$foo['bar']=1}
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{$foo['bar']['blar']=1}
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You can append values to an array. If the variable exists but is not an array,
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it is converted to an array before the new values are assigned.
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Example: {$foo[]=1}
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You can use a PHP-like syntax for accessing array elements, as well as the
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original "dot" notation.
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Examples:
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{$foo[1]}             normal access
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{$foo['bar']}
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{$foo['bar'][1]}
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{$foo[$x+$x]}         index may contain any expression
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{$foo[$bar[1]]}       nested index
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{$foo[section_name]}  smarty section access, not array access!
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The original "dot" notation stays, and with improvements.
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Examples:
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{$foo.a.b.c}        =>  $foo['a']['b']['c'] 
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{$foo.a.$b.c}       =>  $foo['a'][$b]['c']        with variable index
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{$foo.a.{$b+4}.c}   =>  $foo['a'][$b+4]['c']       with expression as index
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{$foo.a.{$b.c}}     =>  $foo['a'][$b['c']]         with nested index
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note that { and } are used to address ambiguties when nesting the dot syntax. 
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Variable names themselves can be variable and contain expressions.
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Examples:
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$foo         normal variable
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$foo_{$bar}  variable name containing other variable 
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$foo_{$x+$y} variable name containing expressions 
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$foo_{$bar}_buh_{$blar}  variable name with multiple segments
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{$foo_{$x}}  will output the variable $foo_1 if $x has a value of 1.
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Object method chaining is implemented.
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Example: {$object->method1($x)->method2($y)}
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{for} tag added for looping (replacement for {section} tag):
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{for $x=0, $y=count($foo); $x<$y; $x++}  ....  {/for}
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Any number of statements can be used separated by comma as the first
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inital expression at {for}.
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{for $x = $start to $end step $step} ... {/for}is in the SVN now .
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You can use also
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{for $x = $start to $end} ... {/for}
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In this case the step value will be automaticall 1 or -1 depending on the start and end values.
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Instead of $start and $end you can use any valid expression.
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Inside the loop the following special vars can be accessed:
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$x@iteration = number of iteration
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$x@total = total number of iterations
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$x@first = true on first iteration
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$x@last = true on last iteration
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The Smarty 2 {section} syntax is still supported.
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New shorter {foreach} syntax to loop over an array.
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Example: {foreach $myarray as $var}...{/foreach}
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Within the foreach loop, properties are access via:
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$var@key            foreach $var array key
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$var@iteration      foreach current iteration count (1,2,3...)
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$var@index          foreach current index count (0,1,2...)
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$var@total          foreach $var array total
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$var@first          true on first iteration
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$var@last           true on last iteration
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The Smarty 2 {foreach} tag syntax is still supported.
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NOTE: {$bar[foo]} still indicates a variable inside of a {section} named foo. 
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If you want to access an array element with index foo, you must use quotes
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such as {$bar['foo']}, or use the dot syntax {$bar.foo}.
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while block tag is now implemented:
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{while $foo}...{/while}
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{while $x lt 10}...{/while}
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Direct access to PHP functions:
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Just as you can use PHP functions as modifiers directly, you can now access
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PHP functions directly, provided they are permitted by security settings:
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{time()}
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There is a new {function}...{/function} block tag to implement a template function.
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This enables reuse of code sequences like a plugin function. It can call itself recursively.
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Template function must be called with the new {call name=foo...} tag.
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Example:
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Template file:
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{function name=menu level=0}
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  <ul class="level{$level}">
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  {foreach $data as $entry}
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    {if is_array($entry)}
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      <li>{$entry@key}</li>
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       {call name=menu data=$entry level=$level+1}
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    {else}
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      <li>{$entry}</li>
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    {/if}
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  {/foreach}
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  </ul>
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{/function}
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{$menu = ['item1','item2','item3' => ['item3-1','item3-2','item3-3' =>
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  ['item3-3-1','item3-3-2']],'item4']}
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{call name=menu data=$menu}
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Generated output:
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    * item1
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    * item2
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    * item3
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          o item3-1
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          o item3-2
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          o item3-3
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                + item3-3-1
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                + item3-3-2
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    * item4
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The function tag itself must have the "name" attribute. This name is the tag
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name when calling the function. The function tag may have any number of
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additional attributes. These will be default settings for local variables.
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New {nocache} block function:
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{nocache}...{/nocache} will declare a section of the template to be non-cached
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when template caching is enabled.
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New nocache attribute:
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You can declare variable/function output as non-cached with the nocache attribute.
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Examples:
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{$foo nocache=true}
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{$foo nocache} /* same */
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{foo bar="baz" nocache=true}
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{foo bar="baz" nocache} /* same */
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{time() nocache=true}
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{time() nocache} /* same */
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Or you can also assign the variable in your script as nocache:
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$smarty->assign('foo',$something,true); // third param is nocache setting
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{$foo} /* non-cached */
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$smarty.current_dir returns the directory name of the current template.
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You can use strings directly as templates with the "string" resource type.
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Examples:
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$smarty->display('string:This is my template, {$foo}!'); // php
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{include file="string:This is my template, {$foo}!"} // template
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VARIABLE SCOPE / VARIABLE STORAGE
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=================================
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In Smarty 2, all assigned variables were stored within the Smarty object. 
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Therefore, all variables assigned in PHP were accessible by all subsequent 
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fetch and display template calls.
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In Smarty 3, we have the choice to assign variables to the main Smarty object, 
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to user-created data objects, and to user-created template objects. 
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These objects can be chained. The object at the end of a chain can access all
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variables belonging to that template and all variables within the parent objects.
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The Smarty object can only be the root of a chain, but a chain can be isolated
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from the Smarty object.
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All known Smarty assignment interfaces will work on the data and template objects.
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Besides the above mentioned objects, there is also a special storage area for
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global variables.
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A Smarty data object can be created as follows:
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$data = $smarty->createData();    // create root data object
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$data->assign('foo','bar');       // assign variables as usual
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$data->config_load('my.conf');									 // load config file    
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$data= $smarty->createData($smarty);  // create data object having a parent link to
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the Smarty object
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$data2= $smarty->createData($data);   // create data object having a parent link to
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   405
the $data data object
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   406
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   407
A template object can be created by using the createTemplate method. It has the
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   408
same parameter assignments as the fetch() or display() method.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   409
Function definition:
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   410
function createTemplate($template, $cache_id = null, $compile_id = null, $parent = null)
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   411
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   412
The first parameter can be a template name, a smarty object or a data object.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   413
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   414
Examples:
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   415
$tpl = $smarty->createTemplate('mytpl.tpl'); // create template object not linked to any parent
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   416
$tpl->assign('foo','bar');                   // directly assign variables
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   417
$tpl->config_load('my.conf');									 // load config file    
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   418
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   419
$tpl = $smarty->createTemplate('mytpl.tpl',$smarty);  // create template having a parent link to the Smarty object
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   420
$tpl = $smarty->createTemplate('mytpl.tpl',$data);    // create template having a parent link to the $data object
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   421
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   422
The standard fetch() and display() methods will implicitly create a template object.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   423
If the $parent parameter is not specified in these method calls, the template object
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   424
is will link back to the Smarty object as it's parent.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   425
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   426
If a template is called by an {include...} tag from another template, the
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   427
subtemplate links back to the calling template as it's parent. 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   428
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   429
All variables assigned locally or from a parent template are accessible. If the
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   430
template creates or modifies a variable by using the {assign var=foo...} or
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   431
{$foo=...} tags, these new values are only known locally (local scope). When the
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   432
template exits, none of the new variables or modifications can be seen in the
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   433
parent template(s). This is same behavior as in Smarty 2. 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   434
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   435
With Smarty 3, we can assign variables with a scope attribute which allows the
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   436
availablility of these new variables or modifications globally (ie in the parent
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   437
templates.)
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   438
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   439
Possible scopes are local, parent, root and global. 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   440
Examples:
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   441
{assign var=foo value='bar'}       // no scope is specified, the default 'local'
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   442
{$foo='bar'}                       // same, local scope
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   443
{assign var=foo value='bar' scope='local'} // same, local scope
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   444
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   445
{assign var=foo value='bar' scope='parent'} // Values will be available to the parent object 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   446
{$foo='bar' scope='parent'}                 // (normally the calling template)
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   447
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   448
{assign var=foo value='bar' scope='root'}   // Values will be exported up to the root object, so they can 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   449
{$foo='bar' scope='root'}                   // be seen from all templates using the same root.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   450
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   451
{assign var=foo value='bar' scope='global'} // Values will be exported to global variable storage, 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   452
{$foo='bar' scope='global'}                 // they are available to any and all templates.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   453
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   454
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   455
The scope attribute can also be attached to the {include...} tag. In this case,
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   456
the specified scope will be the default scope for all assignments within the
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   457
included template.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   458
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   459
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   460
PLUGINS
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   461
=======
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   462
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   463
Smarty3 are following the same coding rules as in Smarty2. 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   464
The only difference is that the template object is passed as additional third parameter.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   465
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   466
smarty_plugintype_name (array $params, object $smarty, object $template)
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   467
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   468
The Smarty 2 plugins are still compatible as long as they do not make use of specific Smarty2 internals.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   469
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   470
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   471
TEMPLATE INHERITANCE:
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   472
=====================
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   473
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   474
With template inheritance you can define blocks, which are areas that can be
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   475
overriden by child templates, so your templates could look like this: 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   476
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   477
parent.tpl:
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   478
<html>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   479
  <head>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   480
    <title>{block name='title'}My site name{/block}</title>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   481
  </head>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   482
  <body>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   483
    <h1>{block name='page-title'}Default page title{/block}</h1>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   484
    <div id="content">
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   485
      {block name='content'}
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   486
        Default content
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   487
      {/block}
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   488
    </div>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   489
  </body>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   490
</html>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   491
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   492
child.tpl:
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   493
{extends file='parent.tpl'} 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   494
{block name='title'}
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   495
Child title
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   496
{/block}
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   497
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   498
grandchild.tpl:
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   499
{extends file='child.tpl'} 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   500
{block name='title'}Home - {$smarty.block.parent}{/block} 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   501
{block name='page-title'}My home{/block}
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   502
{block name='content'}
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   503
  {foreach $images as $img}
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   504
    <img src="{$img.url}" alt="{$img.description}" />
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   505
  {/foreach}
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   506
{/block}
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   507
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   508
We redefined all the blocks here, however in the title block we used {$smarty.block.parent},
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   509
which tells Smarty to insert the default content from the parent template in its place.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   510
The content block was overriden to display the image files, and page-title has also be 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   511
overriden to display a completely different title. 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   512
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   513
If we render grandchild.tpl we will get this: 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   514
<html>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   515
  <head>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   516
    <title>Home - Child title</title>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   517
  </head>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   518
  <body>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   519
    <h1>My home</h1>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   520
    <div id="content">
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   521
      <img src="/example.jpg" alt="image" />
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   522
      <img src="/example2.jpg" alt="image" />
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   523
      <img src="/example3.jpg" alt="image" />
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   524
    </div>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   525
  </body>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   526
</html>
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   527
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   528
NOTE: In the child templates everything outside the {extends} or {block} tag sections
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   529
is ignored.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   530
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   531
The inheritance tree can be as big as you want (meaning you can extend a file that 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   532
extends another one that extends another one and so on..), but be aware that all files 
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   533
have to be checked for modifications at runtime so the more inheritance the more overhead you add.
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   534
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   535
Instead of defining the parent/child relationships with the {extends} tag in the child template you
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   536
can use the resource as follow:
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   537
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   538
$smarty->display('extends:parent.tpl|child.tpl|grandchild.tpl');
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   539
4869aea77e21 Bröker-Framework BFW-1
Markus Bröker <broeker.markus@googlemail.com>
parents:
diff changeset
   540
Child {block} tags may optionally have a append or prepend attribute. In this case the parent block content 
4869aea77e21 Bröker-Framework BFW-1
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is appended or prepended to the child block content.
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{block name='title' append} My title {/block}
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PHP STREAMS:
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============
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(see online documentation)
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VARIBLE FILTERS:
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================
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(see online documentation)
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Markus Bröker <broeker.markus@googlemail.com>
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STATIC CLASS ACCESS AND NAMESPACE SUPPORT
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=========================================
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You can register a class with optional namespace for the use in the template like:
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$smarty->register->templateClass('foo','name\name2\myclass');
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In the template you can use it like this:
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{foo::method()}  etc.
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Markus Bröker <broeker.markus@googlemail.com>
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=======================
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Please look through it and send any questions/suggestions/etc to the forums.
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http://www.phpinsider.com/smarty-forum/viewtopic.php?t=14168
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Monte and Uwe