WP_REST_Posts_Controller::prepare_tax_query( array $args, WP_REST_Request $request ): array

3135	private function prepare_tax_query( array $args, WP_REST_Request $request ) {3136		$relation = $request['tax_relation'];3137 3138		if ( $relation ) {3139			$args['tax_query'] = array( 'relation' => $relation );3140		}3141 3142		$taxonomies = wp_list_filter(3143			get_object_taxonomies( $this->post_type, 'objects' ),3144			array( 'show_in_rest' => true )3145		);3146 3147		foreach ( $taxonomies as $taxonomy ) {3148			$base = ! empty( $taxonomy->rest_base ) ? $taxonomy->rest_base : $taxonomy->name;3149 3150			$tax_include = $request[ $base ];3151			$tax_exclude = $request[ $base . '_exclude' ];3152 3153			if ( $tax_include ) {3154				$terms            = array();3155				$include_children = false;3156				$operator         = 'IN';3157 3158				if ( rest_is_array( $tax_include ) ) {3159					$terms = $tax_include;3160				} elseif ( rest_is_object( $tax_include ) ) {3161					$terms            = empty( $tax_include['terms'] ) ? array() : $tax_include['terms'];3162					$include_children = ! empty( $tax_include['include_children'] );3163 3164					if ( isset( $tax_include['operator'] ) && 'AND' === $tax_include['operator'] ) {3165						$operator = 'AND';3166					}3167				}3168 3169				if ( $terms ) {3170					$args['tax_query'][] = array(3171						'taxonomy'         => $taxonomy->name,3172						'field'            => 'term_id',3173						'terms'            => $terms,3174						'include_children' => $include_children,3175						'operator'         => $operator,3176					);3177				}3178			}3179 3180			if ( $tax_exclude ) {3181				$terms            = array();3182				$include_children = false;3183 3184				if ( rest_is_array( $tax_exclude ) ) {3185					$terms = $tax_exclude;3186				} elseif ( rest_is_object( $tax_exclude ) ) {3187					$terms            = empty( $tax_exclude['terms'] ) ? array() : $tax_exclude['terms'];3188					$include_children = ! empty( $tax_exclude['include_children'] );3189				}3190 3191				if ( $terms ) {3192					$args['tax_query'][] = array(3193						'taxonomy'         => $taxonomy->name,3194						'field'            => 'term_id',3195						'terms'            => $terms,3196						'include_children' => $include_children,3197						'operator'         => 'NOT IN',3198					);3199				}3200			}3201		}3202 3203		return $args;3204	}