fix forceCreate

Author: taylorotwell

src/Illuminate/Database/Eloquent/Relations/MorphOneOrMany.php

@@ -67,6 +67,20 @@ public function addEagerConstraints(array $models)
         $this->getRelationQuery()->where($this->morphType, $this->morphClass);
     }
 
+    /**
+     * Create a new instance of the related model. Allow mass-assignment.
+     *
+     * @param  array  $attributes
+     * @return \Illuminate\Database\Eloquent\Model
+     */
+    public function forceCreate(array $attributes = [])
+    {
+        $attributes[$this->getForeignKeyName()] = $this->getParentKey();
+        $attributes[$this->getMorphType()] = $this->morphClass;
+
+        return $this->related->forceCreate($attributes);
+    }
+
     /**
      * Set the foreign ID and type for creating a related model.
      *