How can I remove filters from custom post types?

Question

I created a custom post type which I'll use as landing page for PPC. Now on that custom post type I would like to remove all the filters which are adding the social media buttons for example. I tried already with the following code but that did also remove the shortcode filter which I would like to keep on that custom post type. Here's the code I used:

    function landingpage_remove_plugin_filters() {

    global $wp_filter;
    global $wp;
    if ($wp->query_vars["post_type"] == 'landingpage') {
    remove_all_filters('the_content', 'plugin_filters');
    }
    }   

    add_action('wp','landingpage_remove_plugin_filters');

Does anyone know what I need to change in order to keep the shortcode filters on that custom post type?

Thanks a lot for your efforts.

Daniel

Answer 1

Try re-adding the 'do_shortcode' filter like so:

function landingpage_remove_plugin_filters() {

    global $wp_filter;
    global $wp;
    if ($wp->query_vars["post_type"] == 'landingpage') {
        remove_all_filters('the_content', 'plugin_filters');
        add_filter('the_content', 'do_shortcode');
    }
}   

add_action('wp','landingpage_remove_plugin_filters');

Answer 2

remove_all_filters function removes all of the hooks from filter, and it only has two parameters $tag ( the filter to remove hooks from ) and $priority

if you want to remove all hooks from filter use remove_all_filters, but if you only want to remove hook named plugin_filters use remove_filter function

function landingpage_remove_plugin_filters() {
    global $post;

    if ( 'landingpage' == $post->post_type )
        remove_filter( 'the_content', 'plugin_filters' );
}
add_action( 'wp', 'landingpage_remove_plugin_filters' );