Back to top
You are here: start / documentation / rack / reference / templates

Page Tools

Show page Old revisions Backlinks

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
documentation:rack:reference:templates [2018/05/25 18:10] – [More functionality] Martijn Luinstradocumentation:rack:reference:templates [2023/08/31 21:12] (current) – Martijn Luinstra
Line 1: Line 1:
 ====== Templates ====== ====== Templates ======
  
-Every template is an instance of the <php>Template</php> class defined in ''include/utils.php''.+Every template is an instance of the ''Template'' class defined in ''include/utils.php''. Rack templates are parsed and executed as PHP and therefore can execute arbitrary PHP code. However, it is advised to keep it simple in order to maintain separation between rendering and internal logic. This page covers the documentation of functionality that is specific to templates. 
 + 
 +<WRAP danger>**WARNING!** No data is escaped by default. Always explicitly escape your template variables and be careful which data you access in templates.</WRAP>
  
 ===== Template variables (context) ===== ===== Template variables (context) =====
Line 7: Line 9:
 Templates are intitialized with a context object, which is an associative array. The individual elements of this array are made available in the templates as regular variables (see [[http://php.net/manual/en/function.extract.php|extract]]). Consider the context  Templates are intitialized with a context object, which is an associative array. The individual elements of this array are made available in the templates as regular variables (see [[http://php.net/manual/en/function.extract.php|extract]]). Consider the context 
  
-<PHP>+<code php>
 $context = [ $context = [
   'title' => 'Home',   'title' => 'Home',
   'page_id' => 'index'   'page_id' => 'index'
 ]; ];
-</PHP>+</code>
  
 and the template and the template
  
-<PHP>+<code php>
 <html> <html>
   <head>   <head>
Line 26: Line 28:
   </body>   </body>
 </html> </html>
-</PHP>+</code>
  
 which renders as which renders as
  
-<HTML> +<WRAP box round> 
-<div style="padding: 1em; border: solid 1px #999; border-radius: 0.2em;"> +====== Home ====== 
-  <h1>Home</h1> +page_id: index 
-  page_id: index +</WRAP>
-</div> +
-</HTML>\\+
  
 ===== Template functions ===== ===== Template functions =====
  
-The following functions are available to escape data to prevent XSS attacks.+All global functions are available in templates. The template class provides the following additional functions for escaping data to prevent XSS attacks.
  
-* <php>html($data)</php> Escapes data to be used as (part of) an HTML element's content. +  * ''%%html($data)%%'' Escapes data to be used as (part of) an HTML element's content. 
-* <php>attr($data)</php> Escapes data to be used as (part of) an HTML element's attributes. +  * ''%%attr($data)%%'' Escapes data to be used as (part of) an HTML element's attributes. 
-* <php>format_plain_text($text)</php> Escapes and wraps paragraphs in ''<p>'' elements. +  * ''%%format_plain_text($text)%%'' Escapes and wraps paragraphs in ''<p>'' elements.
-* <php>format_code($code)</php> Escapes and wraps code in ''<pre>'' elements.+
  
-**WARNING! No data is escaped by default. Always escape your template variables. **+Remember! No data is escaped by default. Always explicitly escape your template variables and be careful which data you access in templates.
  
 The following snippet shows how these functions should be used. The following snippet shows how these functions should be used.
  
-<PHP>+<code php>
 <section> <section>
   <h1><?= $this->html($title) ?></h1>   <h1><?= $this->html($title) ?></h1>
   <?= $this->format_plain_text($some_text) ?>   <?= $this->format_plain_text($some_text) ?>
-  <?= $this->format_code($some_code) ?> +  Author: <a href="<?= $this->attr($url_to_author_page) ?>"><?= $this->html($author_name) ?></a>
-  Author <a href="<?= $this->attr($url_to_author_page) ?>"><?= $this->html($author_name) ?></a>+
 </section> </section>
-</PHP>+</code>
  
  
Line 64: Line 62:
 Rack templates support basic template inheritance, provided by the following functions: Rack templates support basic template inheritance, provided by the following functions:
  
-  * <php>Template->extends($template)</php> This function sets the parent template, where <php>$template</php> as a path relative to the current template. +  * ''%%Template->extends($template)%%'' This function sets the parent template, where <php>$template</php> as a path relative to the current template. 
-  * <php>Template->begin($block_name)</php> This function begins a new block. +  * ''%%Template->begin($block_name)%%'' This function begins a new block. 
-  * <php>Template->end()</php> This function ends a block.+  * ''%%Template->end()%%'' This function ends a block.
  
 Note that nested blocks are not supported and that blocks are only allowed in templates that extend a parent template. Note that nested blocks are not supported and that blocks are only allowed in templates that extend a parent template.
documentation/rack/reference/templates.1527271839.txt.gz · Last modified: (external edit)