JetEngine Related Items by Sibling Relation Macro

rel-get-items-by-relation.php

<?php

add_action( 'jet-engine/register-macros', function(){ 

    class Related_Items_By_Sibling_Relation extends \Jet_Engine_Base_Macros {

		public function macros_tag() {
			return 'rel_get_items_by_relation';
		}

		public function macros_name() {
			return __( 'Related Items By Sibling Relation', 'jet-engine' );
		}
		
		public function macros_callback( $args = array() ) {

			$rel_id           = isset( $args['_rel_id'] ) ? $args['_rel_id'] : false;
			$rel_object       = isset( $args['_rel_object'] ) ? $args['_rel_object'] : 'child_object';
			$rel_object_from  = isset( $args['_rel_object_from'] ) ? $args['_rel_object_from'] : 'current_object';
			$rel_object_var   = isset( $args['_rel_object_var'] ) ? $args['_rel_object_var'] : '';
			
			$rel_id2          = isset( $args['_rel_id2'] ) ? $args['_rel_id2'] : false;
			$rel_object2      = isset( $args['_rel_object2'] ) ? $args['_rel_object2'] : 'child_object';
			
			$empty = PHP_INT_MAX;

			if ( ! (int) $rel_id || ! (int) $rel_id2 ) {
				return $empty;
			}

			$relation = jet_engine()->relations->get_active_relations( $rel_id );

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

			$object_id = false;

			if ( $rel_object_from ) {

				$object_id = jet_engine()->relations->sources->get_id_by_source( $rel_object_from, $rel_object_var );

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

			}

			$related_ids = array();

			switch ( $rel_object ) {
				case 'parent_object':
					$related_ids = $relation->get_parents( $object_id, 'ids' );
					break;

				default:
					$related_ids = $relation->get_children( $object_id, 'ids' );
					break;
			}

			$related_ids = ! empty( $related_ids ) ? $related_ids : array( $empty );

			$related = array();
			
			$relation = jet_engine()->relations->get_active_relations( $rel_id2 );

			switch ( $rel_object2 ) {
				case 'parent_object':
					foreach ( $related_ids as $object_id ) {
						$related = array_merge( $relation->get_parents( $object_id, 'ids' ), $related );
					}
					break;

				default:

					foreach ($related_ids as $object_id) {
						$related = array_merge( $relation->get_children( $object_id, 'ids' ), $related );
					}
					break;
			}

			$related = array_unique( $related );

			if ( empty( $related ) ) {
				return $empty;
			}

			return implode( ',', $related );
			
		}

		public function macros_args() {

			return array(
				'_rel_id' => array(
					'label'   => __( 'By Direct Relation', 'jet-engine' ),
					'type'    => 'select',
					'options' => function() {
						return jet_engine()->relations->get_relations_for_js( true, __( 'Select...', 'jet-engine' ) );
					},
					'default' => '',
				),
				'_rel_object' => array(
					'label'   => __( 'By Direct Object', 'jet-engine' ),
					'type'    => 'select',
					'options' => array(
						'parent_object' => __( 'Parent Object', 'jet-engine' ),
						'child_object'  => __( 'Child Object', 'jet-engine' ),
					),
					'default' => 'child_object',
				),
				'_rel_id2' => array(
					'label'   => __( 'From Sibling Relation', 'jet-engine' ),
					'type'    => 'select',
					'options' => function() {
						return jet_engine()->relations->get_relations_for_js( true, __( 'Select...', 'jet-engine' ) );
					},
					'default' => '',
				),
				'_rel_object2' => array(
					'label'   => __( 'From Sibling Object', 'jet-engine' ),
					'type'    => 'select',
					'options' => array(
						'parent_object' => __( 'Parent Object', 'jet-engine' ),
						'child_object'  => __( 'Child Object', 'jet-engine' ),
					),
					'default' => 'child_object',
				),
				'_rel_object_from' => array(
					'label'   => __( 'Direct Object ID From', 'jet-engine' ),
					'type'    => 'select',
					'options' => array( jet_engine()->relations->sources, 'get_sources' ),
					'default' => 'current_object',
				),
				'_rel_object_var' => array(
					'label'     => __( 'Variable Name', 'jet-engine' ),
					'type'      => 'text',
					'default'   => '',
					'condition' => array( 'rel_object_from' => array( 'query_var', 'object_var' ) ),
				),
			);
		}

	}
    
    new Related_Items_By_Sibling_Relation();
    
} );