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Kohana Markdown

Last edited: Wed, 07 July 2010 (stroppytux)

A text-to-HTML conversion tool for web writers for Kohana 3.

Based off the php created by Michel Fortin under the gpl lisense. For more information, please refer to:

Original Markdown concept by John Gruber. Please refer to:

Markdown is a text-to-HTML filter; it translates an easy-to-read / easy-to-write structured text format into HTML. Markdown's text format is most similar to that of plain text email, and supports features such as headers, emphasis, code blocks, blockquotes, and links.

Markdown's syntax is designed not as a generic markup language, but specifically to serve as a front-end to (X)HTML. You can use span-level HTML tags anywhere in a Markdown document, and you can use block level HTML tags (like <div> and <table> as well).

For more information about Markdown's syntax, see:


  1. Check out the main source

    Checkout the main repository from github. In order to do this, you will need a github key configured. Please check the github documentation for more details.

     git clone git:// modules/markdown

    This should give you the following (in the modules/markdown directory):

     classes  config
  2. Configure Markdown

    Copy the configuration file located in markdown/config to your application configuration directory.

     cp modules/markdown/config/markdown.php application/config/
    • ####type#### Defines the type of output to produce. This can be one of html or xhtml.

    • ####tab_width#### When producing the output, indentation is applied. The tab_width value sets the tab width to use for the indentation.

  3. Enable Markdown

    In order to enable the markdown module, edit the application/bootstrap.php file and add and enable the markdown module within the Kohana::modules section of the bootstrap file.

     'markdown'		=> MODPATH.'markdown',		// Markdown module
  4. Process strings

    Now add the markdown transformer in between the value received from the user, and the storage. eg.

     <?php defined('SYSPATH') or die('No direct script access.');
     class Model_Description extends Model {
     	public function add($data)
     		$query = DB::query(Database::INSERT, '
     		INSERT INTO `Descriptions`
     			(`d_title`, `d_description`)
     			(:title, :description)');
     		/* Sort out the description */
     		$description = Markdown::instance()->transform($data['description']);
     		/* Add the paramaters to the query */
     		$query->param(':title', $data['title']);
     		$query->param(':description', $description);
     		return $query->execute();
  5. Validation rules

    A helper paramater has been added to the Kohana_markdown class that can be used in conjunction with the Kohana_Validation class. In order to use this, add the following to the validation rules:

     /* Validate the input */
     $validation = Validate::factory(array('description' => $description)
     ->rule('description', 'regex', array(Markdown::$validate));