th_content output does not appear

Hi,

I’m trying this a couple of hours. But It doesn’t work out, so here I am and ask for your advice :-).

The code below shows the category and lists the post of it. But I want, that it shows the whole post (the_content();). But I can’t figured out why it does not work. Because the “get_the_title” variable works fine… See the “$posts_list” part.

And I would like that list post from a specified category (+ child categories), is that possible? Someones got an idea?

Thanks in advanced!

<?php
	wp_list_categories( array(
	    'walker' => new Walker_Category_Posts(),
	) );

	class Walker_Category_Posts extends Walker_Category {

	    function start_el(&$output, $category, $depth, $args) {

	        $this->category = $category;

	        parent::start_el($output, $category, $depth, $args);
	    }

	    function end_el(&$output, $page, $depth, $args) {
	        if ( 'list' != $args['style'] )
	            return;

	        $posts = get_posts( array(
	            'cat' => $this->category->term_id,
	            'numberposts' => 100,
	        ) );

	        if( !empty( $posts ) ) {

	            $posts_list = '<ul>';

	            foreach( $posts as $post )
	             while (have_posts()): the_post();
	                $posts_list .= '<li>' . get_the_title( $post->ID ).the_content();.'</li>';

	            $posts_list .= '</ul>';
	        }
	        else {
	            $posts_list = '';
	        }

	        $output .= "{$posts_list}</li>\n";
	    }
	}

	 ?>