custom-parser.md

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Create a custom parser

If you want to implement another Markdown parser library, you can.

Create the parser class

Create the file src/AppBundle/Markdown/MyMarkdownParser and write the following class :

<?php
namespace AppBundle\Markdown;

class MyMarkdownParser implements MarkdownParserInterface
{
    function parse($string)
    {
        // The method will take as parameter the Markdown string and must return the rendered HTML
    }

}

Register the parser as service

Now we have our parser, the class must be registered as service to be injected in the bundle.

Register the class as service in services.yml with the tag markdown.parser

services:
    # ...
    my_markdown_parser:
        class: AppBundle\Markdown\MyMarkdownParser
        tags:
            - { name: markdown.parser, alias: my_markdown_parser } # The alias attribute is required, it's the parser name
    # ...

Use it

Now we can use the Twig filter markdown with our new Markdown parser

{{ my_var | markdown('my_markdown_parser') }} {# The parser name is the alias of the service tag #}

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