Title: Repeatable Field – default values
Last modified: September 1, 2016

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# Repeatable Field – default values

 *  Resolved [kblairspark](https://wordpress.org/support/users/kblairspark/)
 * (@kblairspark)
 * [9 years, 10 months ago](https://wordpress.org/support/topic/repeatable-field-default-values/)
 * I’m using a CMB2’s repeatable fields to keep track of materials I need to run
   an activity at an event.
 * I want to be able to add 3 items to the repeatable field automatically if the
   post I’m working on has a specific value as a custom field. I was trying to do
   it using the save_post hook, but the function I added to it fires before CMB 
   updates the meta values.
 * Is there a way I can add a set of default values to a repeatable group field?
   I tried adding a callback funtion to default on the GROUP field, but I’m not 
   sure if group fields actually do anything with the default field parameter (it
   didn’t seem to).
 * Now I’m investigating doing it with the updated_post_meta / added_post_meta hook,
   is that probably the best way?
 * [https://wordpress.org/plugins/cmb2/](https://wordpress.org/plugins/cmb2/)

Viewing 5 replies - 1 through 5 (of 5 total)

 *  Plugin Author [Justin Sternberg](https://wordpress.org/support/users/jtsternberg/)
 * (@jtsternberg)
 * [9 years, 10 months ago](https://wordpress.org/support/topic/repeatable-field-default-values/#post-7619487)
 * If you want assistance, it’s always best if you provide your code, even if it’s
   not working. Especially your cmb box/field registration code. Alternatively, 
   i’ll use a dummy example and you’ll have to make it work w/ your actual ids/fields/
   etc.
 * You can hook into the after_save hooks: [https://github.com/WebDevStudios/CMB2/blob/master/includes/CMB2.php#L606-L640](https://github.com/WebDevStudios/CMB2/blob/master/includes/CMB2.php#L606-L640)
 * Assuming your cmb/field registration looks like:
 *     ```
       function yourprefix_register_repeatable_group_field_metabox() {
       	/**
       	 * Repeatable Field Groups
       	 */
       	$cmb = new_cmb2_box( array(
       		'id'           => 'yourprefix_group_metabox',
       		'title'        => __( 'Repeating Field Group', 'cmb2' ),
       		'object_types' => array( 'page', ),
       	) );
   
       	$cmb->add_field( array(
       		'name'             => __( 'Radio', 'cmb2' ),
       		'id'               => 'yourprefix_group_radio',
       		'type'             => 'radio',
       		'options' => array(
       			'standard' => __( 'Option One', 'cmb2' ),
       			'custom'   => __( 'Option Two', 'cmb2' ),
       			'none'     => __( 'Option Three', 'cmb2' ),
       		),
       	) );
   
       	$group_field_id = $cmb->add_field( array(
       		'id'          => 'yourprefix_group_demo',
       		'type'        => 'group',
       		'description' => __( 'Generates reusable form entries', 'cmb2' ),
       		'options'     => array(
       			'group_title'    => __( 'Entry {#}', 'cmb2' ),
       			'add_button'     => __( 'Add Another Entry', 'cmb2' ),
       			'remove_button'  => __( 'Remove Entry', 'cmb2' ),
       			'sortable'       => true,
       		),
       	) );
   
       	$cmb->add_group_field( $group_field_id, array(
       		'name' => 'Entry Title',
       		'id'   => 'title',
       		'type' => 'text',
       	) );
   
       	$cmb->add_group_field( $group_field_id, array(
       		'name'        => 'Description',
       		'description' => 'Write a short description for this entry',
       		'id'          => 'description',
       		'type'        => 'textarea_small',
       	) );
   
       }
       add_action( 'cmb2_init', 'yourprefix_register_repeatable_group_field_metabox' );
       ```
   
 * You could hook in to the save hook and do something like:
 *     ```
       function hook_in_and_add_default_group_value( $post_id, $updated, $cmb ) {
       	// If 'yourprefix_group_radio' was updated, then proceed w/ your stuff.
       	if ( in_array( 'yourprefix_group_radio', $updated ) ) {
       		if ( 'standard' === get_post_meta( $post_id, 'yourprefix_group_radio', 1 ) ) {
       			// do stuff
       			update_post_meta( $post_id, 'yourprefix_group_demo', array(
       				array(
       					'title'       => 'Title of group 1',
       					'description' => 'Description of group 1',
       				)
       			) );
       		}
       	}
       }
       add_action( 'cmb2_save_post_fields_yourprefix_group_metabox', 'hook_in_and_add_default_group_value', 10, 3 );
       ```
   
 *  Plugin Author [Justin Sternberg](https://wordpress.org/support/users/jtsternberg/)
 * (@jtsternberg)
 * [9 years, 10 months ago](https://wordpress.org/support/topic/repeatable-field-default-values/#post-7619488)
 * I’ve added this to the snippet library: [https://github.com/WebDevStudios/CMB2-Snippet-Library/blob/master/filters-and-actions/save-default-group-field-value-based-on-other-field.php](https://github.com/WebDevStudios/CMB2-Snippet-Library/blob/master/filters-and-actions/save-default-group-field-value-based-on-other-field.php)
 *  Thread Starter [kblairspark](https://wordpress.org/support/users/kblairspark/)
 * (@kblairspark)
 * [9 years, 10 months ago](https://wordpress.org/support/topic/repeatable-field-default-values/#post-7619515)
 * Thank you so much! I was mostly asking for an approach, rather than code, which
   is why I didn’t post mine. Especially because right now it’s not really even 
   trying to do what I want, and I will be changing it based on this (not the metabox,
   but all the code updating the values).
 * This example is super helpful, I will try it out, and i will come back and post
   code if it doesn’t work as expected.
 * Is there anywhere the hooks for CMB2 are documented, outside of the code? I couldn’t
   find it in the wiki.
 *  Plugin Contributor [Michael Beckwith](https://wordpress.org/support/users/tw2113/)
 * (@tw2113)
 * The BenchPresser
 * [9 years, 10 months ago](https://wordpress.org/support/topic/repeatable-field-default-values/#post-7619517)
 * This should provide at least a consolidated list of available hooks, with code
   references [http://cmb2.io/api/hook-docs.html](http://cmb2.io/api/hook-docs.html)
 *  Thread Starter [kblairspark](https://wordpress.org/support/users/kblairspark/)
 * (@kblairspark)
 * [9 years, 8 months ago](https://wordpress.org/support/topic/repeatable-field-default-values/#post-8272267)
 * Thanks! This worked great. I ended up using updated_post_meta to hook on to, 
   since the trigger custom field was not a CMB2 field.

Viewing 5 replies - 1 through 5 (of 5 total)

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## Tags

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 * 5 replies
 * 3 participants
 * Last reply from: [kblairspark](https://wordpress.org/support/users/kblairspark/)
 * Last activity: [9 years, 8 months ago](https://wordpress.org/support/topic/repeatable-field-default-values/#post-8272267)
 * Status: resolved