PLANET-7072 Set PageType DLV for High Level & Deep Dive Topic pages (#…

…2114)

Ref https://jira.greenpeace.org/browse/PLANET-7072

src/Post.php

@@ -64,6 +64,7 @@ public function __construct($pid = null)
     public function set_data_layer(): void
     {
         $is_new_ia = !empty(planet4_get_option('new_ia'));
+        $new_ia_child_page_DLV = $this->get_new_ia_child_page_DLV();
 
         if (is_front_page()) {
             $this->data_layer['page_category'] = 'Homepage';
@@ -85,6 +86,8 @@ public function set_data_layer(): void
             $this->data_layer['page_category'] = 'Actions';
         } elseif ($is_new_ia && $this->is_about_us_page()) {
             $this->data_layer['page_category'] = 'About Us Page';
+        } elseif ($is_new_ia && $new_ia_child_page_DLV) {
+            $this->data_layer['page_category'] = $new_ia_child_page_DLV;
         } else {
             $this->data_layer['page_category'] = 'Default Page';
         }
@@ -209,6 +212,30 @@ public function is_about_us_page(): bool
         return absint($act_page_id) === $this->id;
     }
 
+    /**
+     * Checks if post is the children of Get Informed page, and return DLV.
+     *
+     * @return String The dataLayer value for get informed child page.
+     */
+    public function get_new_ia_child_page_DLV(): string
+    {
+        $get_informed_page_id = (int) planet4_get_option('get_informed_page');
+
+        if (!$get_informed_page_id) {
+            return '';
+        }
+
+        $parents = get_post_ancestors($this->id);
+
+        if (1 === count($parents) && $parents[0] === $get_informed_page_id) {
+            return 'High Level Topic';
+        }
+        if (2 === count($parents) && $parents[1] === $get_informed_page_id) {
+            return 'Deep Dive Topic';
+        }
+        return '';
+    }
+
     /**
      * Loads in context information on the navigation links for Issue pages relevant to current Post's categories.
      */