Meta Box

Check if MB plugin and extension is active

Support › General › Check if MB plugin and extension is active

Viewing 5 posts - 1 through 5 (of 5 total)
  • Author
    Posts
  • August 17, 2022 at 6:25 PM #37547
    info@j0e.org[email protected]
    Participant

    Hello,
    I use the snippet from here to list the featured image in the backend.
    But if the MB Plugin is not active, my website breaks.

    So my question is now, how can I check if MB and the needed extensions are active?
    I tried this with function_exists:

    
/* Add Featured Images to Admin Columns 
 * https://docs.metabox.io/extensions/mb-admin-columns/
 * https://support.metabox.io/topic/displaying-featured-image-in-admin-columns/
 */
if ( function_exists( 'mb_admin_column_load' ) ) {
	add_action( 'admin_init', 'prefix_add_custom_columns', 20 );
}
function prefix_add_custom_columns() {
    class Prefix_Custom_Admin_Columns extends \MBAC\Post {
        public function columns( $columns ) {
            $columns  = parent::columns( $columns );
            $position = 'before';
            $target   = 'title';
            $this->add( $columns, 'featured_image', 'Image', $position, $target );
            // Add more if you want
            return $columns;
        }
        public function show( $column, $post_id ) {
            switch ( $column ) {
                case 'featured_image':
                    the_post_thumbnail( [60, 60] );
                    break;
                // More columns
            }
        }
    }
    new Prefix_Custom_Admin_Columns( 'post', array() );
    new Prefix_Custom_Admin_Columns( 'page', array() );
    new Prefix_Custom_Admin_Columns( 'review', array() );
}

    But this isn't working.

    How to do it right, and where can I find the right functions for the plugin itself and all extensions?

    thanks
    Jochen

    August 18, 2022 at 11:22 AM #37559
    Long NguyenLong Nguyen
    Moderator

    Hi,

    Please follow this documentation to check if the Meta Box plugin is activated https://docs.metabox.io/functions/rwmb-meta/#faq

    August 18, 2022 at 5:06 PM #37564
    info@j0e.org[email protected]
    Participant

    Hello Long,
    sorry I am not a programmer. I don't know how to use this correctly.

    My site is still crashing after using this

    add_action( 'admin_init', 'prefix_add_custom_columns', 20 );
function prefix_add_custom_columns() {
  if ( ! function_exists( 'rwmb_meta' ) ) {
    function rwmb_meta( $key, $args = [], $object_id = null ) {
        return null;
    }
  }
  class Prefix_Custom_Admin_Columns extends \MBAC\Post {
    public function columns( $columns ) {
      $columns  = parent::columns( $columns );
      $position = 'before';
      $target   = 'title';
      $this->add( $columns, 'featured_image', 'Image', $position, $target );
      // Add more if you want
      return $columns;
    }
    public function show( $column, $post_id ) {
      switch ( $column ) {
        case 'featured_image':
          the_post_thumbnail( [60, 60] );
          break;
          // More columns
      }
    }
  }
  new Prefix_Custom_Admin_Columns( 'post', array() );
  new Prefix_Custom_Admin_Columns( 'page', array() );
  new Prefix_Custom_Admin_Columns( 'review', array() );
}

    Can you please correct it for me?
    Jochen

    August 19, 2022 at 12:23 PM #37580
    Long NguyenLong Nguyen
    Moderator

    Hi,

    You can check Meta Box is activated before using the hook to register the custom columns.

    if ( function_exists( 'rwmb_meta' ) ) {
    add_action( 'admin_init', 'prefix_add_custom_columns', 20 );
}

    For other extensions, if you are using the plugin Meta Box AIO, it is so hard to check if it is available.

    August 19, 2022 at 5:40 PM #37943
    info@j0e.org[email protected]
    Participant

    Thank you Long.

    I have added now "mb_admin_column_load" to the if, but it is still crashing if I deactivate AIO.
    Is it not easier to check it the two plugins are active?
    How can I do that?

    if ( function_exists( 'rwmb_meta' ) OR function_exists( 'mb_admin_column_load' ) ) {
	add_action( 'admin_init', 'prefix_add_custom_columns', 20 );
}
function prefix_add_custom_columns() {
	class Prefix_Custom_Admin_Columns extends \MBAC\Post {
		public function columns( $columns ) {
			$columns  = parent::columns( $columns );
			$position = 'before';
			$target   = 'title';
			$this->add( $columns, 'featured_image', 'Image', $position, $target );
			// Add more if you want
			return $columns;
		}
		public function show( $column, $post_id ) {
			switch ( $column ) {
				case 'featured_image':
					the_post_thumbnail( [60, 60] );
					break;
					// More columns
			}
		}
	}
	new Prefix_Custom_Admin_Columns( 'post', array() );
	new Prefix_Custom_Admin_Columns( 'page', array() );
	new Prefix_Custom_Admin_Columns( 'review', array() );
}
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