FIX: fix permissions for publishing content pages

app/Models/Content/Content.php

@@ -87,6 +87,10 @@ class Content extends Model
      */
     public function category()
     {
+        if (!class_exists(Category::class)) {
+            throw new \ErrorException('Categories are not installed');
+        }
+
         return $this->belongsTo(Category::class);
     }
 

app/Policies/ContentPolicy.php

@@ -2,6 +2,7 @@
 
 namespace App\Policies;
 
+use App\CMS\Contracts\Repositories\Content as ContentContract;
 use App\Models\Content\Content;
 use App\Models\User;
 use Illuminate\Auth\Access\HandlesAuthorization;
@@ -35,21 +36,83 @@ class ContentPolicy extends BasicPolicy
      *
      * @return bool
      */
-    public function create(User $user) {
+    public function create(User $user)
+    {
         return $user->hasAbility('create-contents');
     }
 
-    public function publish(User $user)
+    /**
+     * Change page status
+     *
+     * @param User    $user
+     * @param Content $page
+     * @param         $status
+     *
+     * @return bool
+     */
+    public function changeStatus(User $user, Content $page, $status)
+    {
+        switch ($status) {
+            case ContentContract::STATUS_PUBLIC:
+                return $this->publish($user, $page);
+                break;
+            case ContentContract::STATUS_DRAFT:
+                return $this->draft($user, $page);
+                break;
+            case ContentContract::STATUS_PROTECTED:
+                return $this->protect($user, $page);
+                break;
+        }
+
+        return false;
+    }
+
+    /**
+     * Can user publish given page?
+     *
+     * @param User    $user
+     * @param Content $page
+     *
+     * @return bool
+     */
+    public function publish(User $user, Content $page)
     {
         return $user->hasAbility('publish-contents');
     }
 
+    /**
+     * Can user make draft from given page?
+     *
+     * @param User    $user
+     * @param Content $page
+     *
+     * @return bool
+     */
+    public function draft(User $user, Content $page)
+    {
+        return $user->hasAbility('draft-contents');
+    }
+
+    /**
+     * Can user publish page only for protected users?
+     *
+     * @param User    $user
+     * @param Content $page
+     *
+     * @return bool
+     */
+    public function protect(User $user, Content $page)
+    {
+        return $user->hasAbility('protect-contents');
+    }
+
     public function setHomepage(User $user)
     {
         return $user->hasAbility('set-homepage-contents');
     }
 
-    public function viewHistory(User $user) {
+    public function viewHistory(User $user)
+    {
         return $user->hasAbility('view-history-contents');
     }
 }

routes/admin/contents.php

@@ -29,7 +29,7 @@ Route::group(['namespace' => 'Contents'], function () {
     // change status of page (protected, public or draft)
     Route::get('content/status/{page}/{status}', 'ContentActions@changeStatus')
          ->name('content.changeStatus')
-         ->middleware('can:changeStatus,page');
+         ->middleware('can:changeStatus,page,status');
 
     // set homepage
     Route::get('content/homepage/{page}', 'ContentActions@setHomepage')