Extended the plugin to manage ad layers for individual terms

README.md

@@ -225,6 +225,8 @@ ad_layers_dfp_custom_targeting_field_args
 
 ad_layers_post_types
 
+ad_layers_taxonomy_types
+
 *Ad_Layers_Post_Type*
 
 ad_layers_taxonomies

php/class-ad-layers-meta-boxes.php

@@ -19,6 +19,13 @@ class Ad_Layers_Meta_Boxes extends Ad_Layers_Singleton {
 		 */
 		public $post_types = array( 'post' );
 
+		/**
+		 * Terms used by ad layers
+		 *
+		 * @var string
+		 */
+		public $terms = array();
+
 		/**
 		 * Capability required to assign ads to posts.
 		 *
@@ -48,6 +55,14 @@ public function setup() {
 			foreach ( $this->post_types as $post_type ) {
 				add_action( 'fm_post_' . $post_type, array( $this, 'add_meta_boxes' ) );
 			}
+
+			// Set terms used by ad layers
+			$this->terms = apply_filters( 'ad_layers_taxonomy_types', $this->terms );
+
+			// Add the custom meta boxes used for ad layers on terms
+			foreach ( $this->terms as $term ) {
+				add_action( 'fm_term_' . $term, array( $this, 'add_term_meta_boxes' ) );
+			}
 		}
 
 		/**
@@ -74,6 +89,31 @@ public function add_meta_boxes() {
 			);
 			$fm_ad_layer->add_meta_box( __( 'Ad Layer', 'ad-layers' ), $post_type, 'side', 'core' );
 		}
+
+		/**
+		 * Adds the meta boxes required to manage ad layers on terms.
+		 * @access public
+		 */
+		public function add_term_meta_boxes() {
+			// Get the term name
+			$term = str_replace( 'fm_term_', '', current_filter() );
+
+			// Add ad units
+			$fm_ad_layer = new Fieldmanager_Autocomplete(
+				array(
+					'name' => 'ad_layer',
+					'description' => __( 'Select a specific custom ad layer to use with this term.', 'ad-layers' ),
+					'datasource' => new Fieldmanager_Datasource_Post( array(
+						'query_args' => array(
+							'post_type' => array( Ad_Layers_Post_Type::instance()->get_post_type() ),
+							'post_status' => 'publish',
+							'order_by' => 'title',
+						),
+					) ),
+				)
+			);
+			$fm_ad_layer->add_term_meta_box( __( 'Ad Layer', 'ad-layers' ), $term );
+		}
 	}
 
 	Ad_Layers_Meta_Boxes::instance();

php/class-ad-layers.php

@@ -182,6 +182,7 @@ public function set_active_ad_layer() {
 
 			// If the ad layer is filtered for this page, skip the logic below
 			$ad_layer = apply_filters( 'ad_layers_active_ad_layer', array(), $queried_object );
+
 			if ( ! empty( $ad_layer ) ) {
 				$this->ad_layer = $ad_layer;
 				return;
@@ -266,6 +267,16 @@ public function set_active_ad_layer() {
 					&& empty( $post_types )
 					&& ( empty( $page_types ) || in_array( $queried_object->taxonomy, $page_types ) ) ) {
 
+					$ad_layer_id = intval( get_term_meta( get_queried_object()->term_id, 'ad_layer', true ) );
+
+					if ( ! empty( $ad_layer_id ) ) {
+						$this->ad_layer = array(
+							'post_id' => $ad_layer_id,
+							'title' => get_the_title( $ad_layer_id ),
+						);
+						break;
+					}
+
 					// Check if there is taxonomy data
 					if ( ! empty( $taxonomy_terms ) ) {
 						// Check if this taxonomy matches

tests/php/test-active-layer.php

@@ -298,4 +298,20 @@ public function test_active_layer_post_types_by_archive() {
 		$this->assertTrue( is_post_type_archive( $post_type_2 ) );
 		$this->assertSame( $layer_2, $this->get_active_ad_layer() );
 	}
+
+	public function test_active_layer_term_override() {
+		$layer_override = $this->build_and_get_layer( array( 'page_types' => 'test-taxonomy' ) );
+		$layer = $this->build_and_get_layer( array( 'page_types' => 'post_tag' ) );
+
+		$this->go_to( get_tag_link( $this->tag_id ) );
+		$this->assertTrue( is_tag() );
+
+		// the tag level ad-layer reflects here as active ad-layer.
+		$this->assertSame( $layer, $this->get_active_ad_layer() );
+
+		// After adding ad_layer to the term, the ad_layer for that term overrides the tag level ad-layer.
+		add_term_meta( $this->tag_id, 'ad_layer', $layer_override );
+		$this->assertNotSame( $layer, $this->get_active_ad_layer() );
+		$this->assertSame( $layer_override, $this->get_active_ad_layer() );
+	}
 }