apply_filters( ‘user_has_cap’, bool[] $allcaps, string[] $caps, array $args, WP_User $user )

User Contributed Notes

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   Mayeenul Islam 8 years ago

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   /**
    * author_cap_filter()
    *
    * Filter on the current_user_can() function.
    * This function is used to explicitly allow authors to edit contributors and other
    * authors posts if they are published or pending.
    *
    * @param array $allcaps All the capabilities of the user
    * @param array $cap     [0] Required capability
    * @param array $args    [0] Requested capability
    *                       [1] User ID
    *                       [2] Associated object ID
    */
   function author_cap_filter( $allcaps, $cap, $args ) {
   
   	// Bail out if we're not asking about a post:
   	if ( 'edit_post' != $args[0] )
   		return $allcaps;
   
   	// Bail out for users who can already edit others posts:
   	if ( $allcaps['edit_others_posts'] )
   		return $allcaps;
   
   	// Bail out for users who can't publish posts:
   	if ( !isset( $allcaps['publish_posts'] ) or !$allcaps['publish_posts'] )
   		return $allcaps;
   
   	// Load the post data:
   	$post = get_post( $args[2] );
   
   	// Bail out if the user is the post author:
   	if ( $args[1] == $post->post_author )
   		return $allcaps;
   
   	// Bail out if the post isn't pending or published:
   	if ( ( 'pending' != $post->post_status ) and ( 'publish' != $post->post_status ) )
   		return $allcaps;
   
   	// Load the author data:
   	$author = new WP_User( $post->post_author );
   
   	// Bail out if post author can edit others posts:
   	if ( $author->has_cap( 'edit_others_posts' ) )
   		return $allcaps;
   
   	$allcaps[$cap[0]] = true;
   
   	return $allcaps;
   
   }
   add_filter( 'user_has_cap', 'author_cap_filter', 10, 3 );