We use a 3rd party custom post type for events in which they have removed the ability to filter the posts.

Events List

I would like to add the option to filter the posts by event date. I have found plenty of examples on adding a filter but I can't find anything for adding the "Filter" button.

Posts List

Does anyone know if it is possible to add this button and if so, how?

2 Answers 2


If you mean the usual months dropdown, then most likely the plugin might be disabling it via the following filter:

 * Filters whether to remove the 'Months' drop-down from the post list table.
 * @since 4.2.0
 * @param bool   $disable   Whether to disable the drop-down. Default false.
 * @param string $post_type The post type.

 if ( apply_filters( 'disable_months_dropdown', false, $post_type ) ) {

You could try to override it with:

add_filter( 'disable_months_dropdown', function( $disable, $post_type )
    return 'event' === $post_type ? true :$disable;
}, 999, 2 );

where you might need to adjust the post type slug and priority to your needs.

  • Thanks but no luck. I checked the plugin and couldn't find a filter using 'disable_months_dropdown'. I found I could create/add other filters, it's just getting the "filter" submit button back to process it.
    – PthPndr
    Commented Dec 3, 2016 at 23:33

Well, in my case I found how they were hiding the date dropdown and filter button.

.events-cal .tablenav select[name=m], .events-cal #post-query-submit {
    display: none;

At least I can overwrite their CSS and get both of those functions back. Thank you.

  • It crossed my mind, that this could be the case, but I doubted the plugin author would use it because the usual way is to use the filter, but I was wrong ;-) Please accept your answer to close the question.
    – birgire
    Commented Dec 4, 2016 at 10:37

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