FEATURE #1523: add subpages for content

app/Models/Content.php

@@ -43,7 +43,6 @@ class Content extends Model
 
     /**
      * Getter for homepage content page
-     *
      * @return Content
      */
     public function getHomepage()
@@ -68,8 +67,36 @@ class Content extends Model
     }
 
     /**
-     * Getter for overview of all content pages.
+     * Get list of all subpages
      *
+     * @return \Illuminate\Database\Eloquent\Relations\HasMany
+     */
+    public function subpages()
+    {
+        return $this->getPageQuery()
+                    ->where('parent_id', $this->id)
+                    ->get();
+    }
+
+    /**
+     * Returns list of all root pages - those pages, which parent_id is null
+     *
+     * @return mixed
+     */
+    public function rootPages()
+    {
+        $rootPages = $this->getPageQuery()
+                          ->where('parent_id', null);
+
+        if ($this->id) {
+            $rootPages = $rootPages->where('id', '!=', $this->id);
+        }
+
+        return $rootPages->get();
+    }
+
+    /**
+     * Getter for overview of all content pages.
      * These content pages may be filtered by using some handler
      *
      * @param bool $handler