Custom field for CMB2 which adds a post-search dialog for searching/attaching other post IDs.
Adds a new text field type (with a button), post_search_text that adds a quick post search dialog for saving post IDs to a text input.
// Classic CMB2 declaration $cmb = new_cmb2_box( array( 'id' => 'prefix-metabox-id', 'title' => __( 'Post Info' ), 'object_types' => array( 'post', ), // Post type ) ); // Add new field $cmb->add_field( array( 'name' => __( 'Related post' ), 'id' => 'prefix_related_post', 'type' => 'post_search_text', // This field type // post type also as array 'post_type' => 'post', // Default is 'checkbox', used in the modal view to select the post type 'select_type' => 'radio', // Will replace any selection with selection from modal. Default is 'add' 'select_behavior' => 'replace', ) );-
Field display
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Search Modal
If you're looking for a more general way to attach posts (or other custom post types) with a drag and drop interface, you might consider CMB2 Attached Posts Field instead.