added removeAll method to Setting component

Author: igor-chepurnoi

components/Settings.php

@@ -140,6 +140,16 @@ public function remove($section, $key)
         return null;
     }
 
+    /**
+     * Remove all settings
+     *
+     * @return int
+     */
+    public function removeAll()
+    {
+        return $this->model->removeAllSettings();
+    }
+
     /**
      * Activates a setting
      *

models/SettingModel.php

@@ -190,6 +190,16 @@ public function removeSetting($section, $key)
         return false;
     }
 
+    /**
+     * Remove all settings
+     *
+     * @return int
+     */
+    public function removeAllSettings()
+    {
+        return static::deleteAll();
+    }
+
     /**
      * Activates a setting
      *

tests/SettingsTest.php

@@ -30,6 +30,16 @@ public function testRemoveSetting()
         $this->assertNull(Yii::$app->settings->get('admin', 'email'), 'Unable to remove the setting!');
     }
 
+    public function testRemoveAllSettings()
+    {
+        Yii::$app->settings->set('admin', 'email', 'admin@mail.com');
+        Yii::$app->settings->set('admin', 'password', '123123');
+
+        $this->assertEquals(2, Yii::$app->settings->removeAll());
+        $this->assertFalse(Yii::$app->settings->has('admin', 'email'));
+        $this->assertFalse(Yii::$app->settings->has('admin', 'password'));
+    }
+
     public function testSetSettingWithType()
     {
         Yii::$app->settings->set('cron', 'activeEmailCommand', 'false', SettingType::BOOLEAN_TYPE);