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It's very nice.</span> </a> <a href="#" class="menu hide" onclick="widescreen_on(); return false" title="Hide Menu"> <span class="about">Click to hide the menu and go all widescreen!</span> </a> <div class="pager"> <a href="../../modules/Template/Plugins.html" title="Template::Plugins" class="go back">Back<span class="about"><h4>Template::Plugins</h4>Plugin provider module</span></a> <a href="../../modules/Template/index.html" title="Template::* Modules" class="go up">Up<span class="about"><h4>Template::* Modules</h4></span></a> <a href="../../modules/Template/Service.html" title="Template::Service" class="go next">Next<span class="about"><h4>Template::Service</h4>General purpose template processing service</span></a> </div> </div> <h1 class="headline">Template::Provider</h1> <h2 class="subhead">Provider module for loading/compiling templates</h1> </div> <div id="page"> <div id="sidebar"> <a href="../../index.html" id="logo"></a> <div id="menu"> <ul class="menu"> <li class="l0 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href="../../modules/Template/VMethods.html">VMethods.pm</a></li> <li class="l2"><a href="../../modules/Template/View.html">View.pm</a></li> <li class="l0"><a href="../../tools/index.html">Tools</a></li> <li class="l0"><a href="../../tutorial/index.html">Tutorial</a></li> <li class="l0 last"><a href="../../faq/index.html">FAQ</a></li> </ul> <div class="foot"></div> </div> </div> <div id="content"> <div class="section"> <div class="head"> <h1 id="contents" onclick="switch_section(this)" title="Click title to show/hide section content.">Contents</h1> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <ul class="toc"> <li class=""><a href="#SYNOPSIS">SYNOPSIS</a></li> <li class=""><a href="#DESCRIPTION">DESCRIPTION</a></li> <li class=""><a href="#PUBLIC_METHODS">PUBLIC METHODS</a></li> <li class="sub"><a href="#method_new">new(\%options)</a></li> <li class="sub"><a href="#method_fetch">fetch($name)</a></li> <li class="sub"><a href="#method_load">load($name)</a></li> <li class="sub"><a href="#method_store">store($name, $template)</a></li> <li class="sub"><a href="#method_include_path">include_path(\@newpath)</a></li> <li class="sub"><a href="#method_paths">paths()</a></li> <li class=""><a href="#CONFIGURATION_OPTIONS">CONFIGURATION OPTIONS</a></li> <li class="sub"><a href="#section_INCLUDE_PATH">INCLUDE_PATH</a></li> <li class="sub"><a href="#section_ABSOLUTE">ABSOLUTE</a></li> <li class="sub"><a href="#section_RELATIVE">RELATIVE</a></li> <li class="sub"><a href="#section_DEFAULT">DEFAULT</a></li> <li class="sub"><a href="#section_ENCODING">ENCODING</a></li> <li class="sub"><a href="#section_CACHE_SIZE">CACHE_SIZE</a></li> <li class="sub"><a href="#section_STAT_TTL">STAT_TTL</a></li> <li class="sub"><a href="#section_COMPILE_EXT">COMPILE_EXT</a></li> <li class="sub"><a href="#section_COMPILE_DIR">COMPILE_DIR</a></li> <li class="sub"><a href="#section_TOLERANT">TOLERANT</a></li> <li class="sub"><a href="#section_PARSER">PARSER</a></li> <li class="sub"><a href="#section_DEBUG">DEBUG</a></li> <li class=""><a href="#SUBCLASSING">SUBCLASSING</a></li> <li class="sub"><a href="#method__template_modified">_template_modified($path)</a></li> <li class="sub"><a href="#method__template_content">_template_content($path)</a></li> <li class=""><a href="#AUTHOR">AUTHOR</a></li> <li class=""><a href="#COPYRIGHT">COPYRIGHT</a></li> <li class=""><a href="#SEE_ALSO">SEE ALSO</a></li> </ul> </div> </div> <div class="pod"> <div class="section"> <div class="head"> <h1 id="SYNOPSIS" onclick="switch_section(this)" title="Click title to show/hide section content.">SYNOPSIS</h1> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <pre>$provider = Template::Provider-&gt;new(\%options); ($template, $error) = $provider-&gt;fetch($name);</pre> </div> </div> <div class="section"> <div class="head"> <h1 id="DESCRIPTION" onclick="switch_section(this)" title="Click title to show/hide section content.">DESCRIPTION</h1> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../modules/Template/Provider.html">Template::Provider</a> is used to load, parse, compile and cache template documents. This object may be sub-classed to provide more specific facilities for loading, or otherwise providing access to templates. </p> <p> The <a href="../../modules/Template/Context.html">Template::Context</a> objects maintain a list of <a href="../../modules/Template/Provider.html">Template::Provider</a> objects which are polled in turn (via <a href="../../modules/Template/Context.html#method_fetch">fetch()</a>) to return a requested template. Each may return a compiled template, raise an error, or decline to serve the request, giving subsequent providers a chance to do so. </p> <p> The <a href="../../modules/Template/Provider.html">Template::Provider</a> can also be subclassed to provide templates from a different source, e.g. a database. See <a href="#section_SUBCLASSING">SUBCLASSING</a> below. </p> <p> This documentation needs work. </p> </div> </div> <div class="section"> <div class="head"> <h1 id="PUBLIC_METHODS" onclick="switch_section(this)" title="Click title to show/hide section content.">PUBLIC METHODS</h1> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <div class="subsection"> <div class="head"> <h2 id="method_new" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">new(\%options)</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> Constructor method which instantiates and returns a new <code>Template::Provider</code> object. A reference to a hash array of configuration options may be passed. </p> <p> See <a href="#CONFIGURATION_OPTIONS">CONFIGURATION OPTIONS</a> below for a summary of configuration options and <a href="../../manual/Config.html">Template::Manual::Config</a> for full details. </p> </div> </div> <div class="subsection"> <div class="head"> <h2 id="method_fetch" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">fetch($name)</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> Returns a compiled template for the name specified. If the template cannot be found then <code>(undef, STATUS_DECLINED)</code> is returned. If an error occurs (e.g. read error, parse error) then <code>($error, STATUS_ERROR)</code> is returned, where <code>$error</code> is the error message generated. If the <a href="#section_TOLERANT">TOLERANT</a> option is set the the method returns <code>(undef, STATUS_DECLINED)</code> instead of returning an error. </p> </div> </div> <div class="subsection"> <div class="head"> <h2 id="method_load" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">load($name)</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> Loads a template without parsing or compiling it. This is used by the the <a href="../../manual/Directives.html#section_INSERT">INSERT</a> directive. </p> </div> </div> <div class="subsection"> <div class="head"> <h2 id="method_store" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">store($name, $template)</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> Stores the compiled template, <code>$template</code>, in the cache under the name, <code>$name</code>. Susbequent calls to <code>fetch($name)</code> will return this template in preference to any disk-based file. </p> </div> </div> <div class="subsection"> <div class="head"> <h2 id="method_include_path" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">include_path(\@newpath)</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> Accessor method for the <code>INCLUDE_PATH</code> setting. If called with an argument, this method will replace the existing <code>INCLUDE_PATH</code> with the new value. </p> </div> </div> <div class="subsection"> <div class="head"> <h2 id="method_paths" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">paths()</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> This method generates a copy of the <code>INCLUDE_PATH</code> list. Any elements in the list which are dynamic generators (e.g. references to subroutines or objects implementing a <code>paths()</code> method) will be called and the list of directories returned merged into the output list. </p> <p> It is possible to provide a generator which returns itself, thus sending this method into an infinite loop. To detect and prevent this from happening, the <code>$MAX_DIRS</code> package variable, set to <code>64</code> by default, limits the maximum number of paths that can be added to, or generated for the output list. If this number is exceeded then the method will immediately return an error reporting as much. </p> </div> </div> </div> </div> <div class="section"> <div class="head"> <h1 id="CONFIGURATION_OPTIONS" onclick="switch_section(this)" title="Click title to show/hide section content.">CONFIGURATION OPTIONS</h1> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The following list summarises the configuration options that can be provided to the <code>Template::Provider</code> <a href="#method_new">new()</a> constructor. Please consult <a href="../../manual/Config.html">Template::Manual::Config</a> for further details and examples of each configuration option in use. </p> <div class="subsection"> <div class="head"> <h2 id="section_INCLUDE_PATH" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">INCLUDE_PATH</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../manual/Config.html#section_INCLUDE_PATH">INCLUDE_PATH</a> option is used to specify one or more directories in which template files are located. </p> <pre># single path my $provider = Template::Provider-&gt;new({ INCLUDE_PATH =&gt; '/usr/local/templates', }); # multiple paths my $provider = Template::Provider-&gt;new({ INCLUDE_PATH =&gt; [ '/usr/local/templates', '/tmp/my/templates' ], });</pre> </div> </div> <div class="subsection"> <div class="head"> <h2 id="section_ABSOLUTE" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">ABSOLUTE</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../manual/Config.html#section_ABSOLUTE">ABSOLUTE</a> flag is used to indicate if templates specified with absolute filenames (e.g. '<code>/foo/bar</code>') should be processed. It is disabled by default and any attempt to load a template by such a name will cause a '<code>file</code>' exception to be raised. </p> <pre>my $provider = Template::Provider-&gt;new({ ABSOLUTE =&gt; 1, });</pre> </div> </div> <div class="subsection"> <div class="head"> <h2 id="section_RELATIVE" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">RELATIVE</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../manual/Config.html#section_RELATIVE">RELATIVE</a> flag is used to indicate if templates specified with filenames relative to the current directory (e.g. <code>./foo/bar</code> or <code>../../some/where/else</code>) should be loaded. It is also disabled by default, and will raise a <code>file</code> error if such template names are encountered. </p> <pre>my $provider = Template::Provider-&gt;new({ RELATIVE =&gt; 1, });</pre> </div> </div> <div class="subsection"> <div class="head"> <h2 id="section_DEFAULT" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">DEFAULT</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../manual/Config.html#section_DEFAULT">DEFAULT</a> option can be used to specify a default template which should be used whenever a specified template can't be found in the <a href="#section_INCLUDE_PATH">INCLUDE_PATH</a>. </p> <pre>my $provider = Template::Provider-&gt;new({ DEFAULT =&gt; 'notfound.html', });</pre> <p> If a non-existant template is requested through the <a href="../../modules/Template.html">Template</a> <a href="../../modules/Template.html#method_process">process()</a> method, or by an <code>INCLUDE</code>, <code>PROCESS</code> or <code>WRAPPER</code> directive, then the <code>DEFAULT</code> template will instead be processed, if defined. Note that the <code>DEFAULT</code> template is not used when templates are specified with absolute or relative filenames, or as a reference to a input file handle or text string. </p> </div> </div> <div class="subsection"> <div class="head"> <h2 id="section_ENCODING" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">ENCODING</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The Template Toolkit will automatically decode Unicode templates that have a Byte Order Marker (BOM) at the start of the file. This option can be used to set the default encoding for templates that don't define a BOM. </p> <pre>my $provider = Template::Provider-&gt;new({ ENCODING =&gt; 'utf8', });</pre> <p> See <a href="#section_Encode">Encode</a> for further information. </p> </div> </div> <div class="subsection"> <div class="head"> <h2 id="section_CACHE_SIZE" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">CACHE_SIZE</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../manual/Config.html#section_CACHE_SIZE">CACHE_SIZE</a> option can be used to limit the number of compiled templates that the module should cache. By default, the <a href="../../manual/Config.html#section_CACHE_SIZE">CACHE_SIZE</a> is undefined and all compiled templates are cached. </p> <pre>my $provider = Template::Provider-&gt;new({ CACHE_SIZE =&gt; 64, # only cache 64 compiled templates });</pre> </div> </div> <div class="subsection"> <div class="head"> <h2 id="section_STAT_TTL" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">STAT_TTL</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../manual/Config.html#section_STAT_TTL">STAT_TTL</a> value can be set to control how long the <code>Template::Provider</code> will keep a template cached in memory before checking to see if the source template has changed. </p> <pre>my $provider = Template::Provider-&gt;new({ STAT_TTL =&gt; 60, # one minute });</pre> </div> </div> <div class="subsection"> <div class="head"> <h2 id="section_COMPILE_EXT" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">COMPILE_EXT</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../manual/Config.html#section_COMPILE_EXT">COMPILE_EXT</a> option can be provided to specify a filename extension for compiled template files. It is undefined by default and no attempt will be made to read or write any compiled template files. </p> <pre>my $provider = Template::Provider-&gt;new({ COMPILE_EXT =&gt; '.ttc', });</pre> </div> </div> <div class="subsection"> <div class="head"> <h2 id="section_COMPILE_DIR" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">COMPILE_DIR</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../manual/Config.html#section_COMPILE_DIR">COMPILE_DIR</a> option is used to specify an alternate directory root under which compiled template files should be saved. </p> <pre>my $provider = Template::Provider-&gt;new({ COMPILE_DIR =&gt; '/tmp/ttc', });</pre> </div> </div> <div class="subsection"> <div class="head"> <h2 id="section_TOLERANT" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">TOLERANT</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../manual/Config.html#section_TOLERANT">TOLERANT</a> flag can be set to indicate that the <code>Template::Provider</code> module should ignore any errors encountered while loading a template and instead return <code>STATUS_DECLINED</code>. </p> </div> </div> <div class="subsection"> <div class="head"> <h2 id="section_PARSER" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">PARSER</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../manual/Config.html#section_PARSER">PARSER</a> option can be used to define a parser module other than the default of <a href="../../modules/Template/Parser.html">Template::Parser</a>. </p> <pre>my $provider = Template::Provider-&gt;new({ PARSER =&gt; MyOrg::Template::Parser-&gt;new({ ... }), });</pre> </div> </div> <div class="subsection"> <div class="head"> <h2 id="section_DEBUG" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">DEBUG</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <a href="../../manual/Config.html#section_DEBUG">DEBUG</a> option can be used to enable debugging messages from the <a href="../../modules/Template/Provider.html">Template::Provider</a> module by setting it to include the <code>DEBUG_PROVIDER</code> value. </p> <pre>use Template::Constants qw( :debug ); my $template = Template-&gt;new({ DEBUG =&gt; DEBUG_PROVIDER, });</pre> </div> </div> </div> </div> <div class="section"> <div class="head"> <h1 id="SUBCLASSING" onclick="switch_section(this)" title="Click title to show/hide section content.">SUBCLASSING</h1> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> The <code>Template::Provider</code> module can be subclassed to provide templates from a different source (e.g. a database). In most cases you'll just need to provide custom implementations of the <code>_template_modified()</code> and <code>_template_content()</code> methods. If your provider requires and custom initialisation then you'll also need to implement a new <code>_init()</code> method. </p> <p> Caching in memory and on disk will still be applied (if enabled) when overriding these methods. </p> <div class="subsection"> <div class="head"> <h2 id="method__template_modified" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">_template_modified($path)</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> Returns a timestamp of the <code>$path</code> passed in by calling <code>stat()</code>. This can be overridden, for example, to return a last modified value from a database. The value returned should be a timestamp value (as returned by <code>time()</code>, although a sequence number should work as well. </p> </div> </div> <div class="subsection"> <div class="head"> <h2 id="method__template_content" class="method" onclick="switch_subsection(this)" title="Click title to show/hide sub-section content.">_template_content($path)</h2> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> This method returns the content of the template for all <code>INCLUDE</code>, <code>PROCESS</code>, and <code>INSERT</code> directives. </p> <p> When called in scalar context, the method returns the content of the template located at <code>$path</code>, or <code>undef</code> if <code>$path</code> is not found. </p> <p> When called in list context it returns <code>($content, $error, $mtime)</code>, where <code>$content</code> is the template content, <code>$error</code> is an error string (e.g. "<code>$path: File not found</code>"), and <code>$mtime</code> is the template modification time. </p> </div> </div> </div> </div> <div class="section"> <div class="head"> <h1 id="AUTHOR" onclick="switch_section(this)" title="Click title to show/hide section content.">AUTHOR</h1> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> Andy Wardley &lt;abw@wardley.org&gt; <a href="http://wardley.org/">http://wardley.org/</a> </p> </div> </div> <div class="section"> <div class="head"> <h1 id="COPYRIGHT" onclick="switch_section(this)" title="Click title to show/hide section content.">COPYRIGHT</h1> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> Copyright (C) 1996-2007 Andy Wardley. All Rights Reserved. </p> <p> This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. </p> </div> </div> <div class="section"> <div class="head"> <h1 id="SEE_ALSO" onclick="switch_section(this)" title="Click title to show/hide section content.">SEE ALSO</h1> <a href="#body" class="top" title="Back up to the top of the page" >Top</a> </div> <div class="body"> <p> <a href="../../modules/Template.html">Template</a>, <a href="../../modules/Template/Parser.html">Template::Parser</a>, <a href="../../modules/Template/Context.html">Template::Context</a> </p> </div> </div> </div></div> <br class="clear" /> <div class="pageinfo"> <a href="http://template-toolkit.org/docs/modules/Template/Provider.html">http://template-toolkit.org/docs/modules/Template/Provider.html</a> </div> </div> <div id="footer"> <a href="http://opensource.org/" class="osi"></a> <div class="controls"> <div class="pager"> <a href="../../modules/Template/Plugins.html" title="Template::Plugins" class="go back">Back<span class="about"><h4>Template::Plugins</h4></span></a> <a href="../../modules/Template/index.html" title="Template::* Modules" class="go up">Up<span class="about"><h4>Template::* Modules</h4></span></a> <a href="../../modules/Template/Service.html" title="Template::Service" class="go next">Next<span class="about"><h4>Template::Service</h4></span></a> </div> </div> <div class="copyright"> Copyright &copy; 1996-2012 <a href="http://wardley.org/">Andy Wardley</a>. All Rights Reserved. </div> <div class="licence"> The <a href="http://template-toolkit.org/">Template Toolkit</a> is <a href="http://opensource.org/">Open Source</a> software. You can redistribute and/or modify it under the terms of the <a href="http://www.opensource.org/licenses/gpl-license.php">GNU Public Licence</a> or the <a href="http://www.opensource.org/licenses/artistic-license.php">Perl Artistic Licence</a>. </div> </div> <div id="palette"> <ul> <li class="first"><a href="#" class="blue" onclick="set_style('Clear Blue')"></a></li> <li><a href="#" class="orange" onclick="set_style('Clear Orange')"></a></li> <li><a href="#" class="green" onclick="set_style('Clear Green')"></a></li> <li><a href="#" class="purple" onclick="set_style('Clear Purple')"></a></li> <li><a href="#" class="grey" onclick="set_style('Clear Grey')"></a></li> </ul> </div> </div> </body> </html>
webs 1.0 - Enhanced UI