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laravel blade, how to append to a section

If you look to laravel official documentation http://laravel.com/docs/4.2/templates It says that giving this layout:

<!-- Stored in app/views/layouts/master.blade.php -->

<html>
    <body>
        @section('sidebar')
            This is the master sidebar.
        @show

        <div class="container">
            @yield('content')
        </div>
    </body>
</html>

Extended by this view

@extends('layouts.master')

@section('sidebar')


    <p>This is appended to the master sidebar.</p>
@stop

@section('content')
    <p>This is my body content.</p>
@stop

Will append to the section sidebar. But actually if you try is it doesn’t append, it just override the content from the extended template.

I heard about others blade function like @append, @prepend, @parent… no one seems to work.

Beside, this example in the official doc which doesn’t work, I find that the blade documentation is very poor. There’s nothing about blade function like @parent for instance.

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Answer

The example in the documentation from Laravel website does indeed seem to be flawed, but I think it’s a markdown parsing problem on the website, the same docs on github show the correct code:

In any case @parent does indeed work. The example in the docs should look like this:

@extends('layouts.master')

@section('sidebar')
    @parent

    <p>This is appended to the master sidebar.</p>
@stop

@section('content')
    <p>This is my body content.</p>
@stop

A quick look in the Illuminate/View/Factory.php confirms what @parent does:

/**
 * Append content to a given section.
 *
 * @param  string  $section
 * @param  string  $content
 * @return void
 */
protected function extendSection($section, $content)
{
    if (isset($this->sections[$section]))
    {
        $content = str_replace('@parent', $content, $this->sections[$section]);
    }

    $this->sections[$section] = $content;
}
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