Reply To: ACF 5.0+ Dynamically Populating Repeater

• Howdy_McGee

• September 18, 2018 at 4:25 am

@mcnab It looks like this:

/**
 * Load value from custom table
 * 
 * @param Mixed $value
 * @param Integer $post_id
 * @param Array $field
 * 
 * @return $value
 */
function populate_custom_table_data( $value, $post_id, $field ) {

	if( ! empty( $value ) ) {
		return $value;
	}

	$has_parent_field	= false;
	$field_name 		= $field['name'];

	/**
	 * Grab parent field and get value by the parent field name
	 * Use conditional below to populate the actual fields.
	 */
	if( ! empty( $field['parent'] ) && false !== strpos( $field['parent'], 'field_' ) ) {

		// false, false is important to prevent infinite recursive loop.
		$parent_field 	  = get_field_object( $field['parent'], $post_id, false, false );
		$has_parent_field = ( ! empty( $parent_field ) );
		$field_name 	  = ( $has_parent_field ) ? $parent_field['name'] : $field_name;

	}
	
	// Grab data from custom table
	$db_data   	= $this->data_util->get_data( $post_id, $field_name );
	$value		= $db_data;

	// Return early if value is empty
	if( empty( $value ) ) {
		return $value;
	}

	// We're in a subfield
	if( $has_parent_field ) {

		$field_concat_name = $field['name'];
		$field_concat_name = str_replace( sprintf( '%1$s_', $field_name ), '', $field_concat_name );
		preg_match( '(\d{1,})', $field_concat_name, $possible_keys );

		if( ! empty( $possible_keys ) ) {

			$arr_index 			= $possible_keys[0];
			$field_concat_name 	= str_replace( sprintf( '%1$d_', $arr_index ), '', $field_concat_name );

			// Now we know what index in our subarray
			$subfield_arr		= $db_data[ $arr_index ];

			// Overwrite $value to actual subfield value
			// Now that we know the name we can grab it from our named index array
			$value = ( ! empty( $subfield_arr[ $field_concat_name ] ) ) ? $subfield_arr[ $field_concat_name ] : '';
		}
		

	} else if( 'repeater' == $field['type'] ) {	// Return repeater count

		$value = count( $db_data );

	}

	return $value;

}
add_filter( 'acf/load_value', 'populate_custom_table_data', 20, 3 );