diff --git a/app/library/App/Controllers/GaController.php b/app/library/App/Controllers/GaController.php
index 75e5180..e053fff 100644
--- a/app/library/App/Controllers/GaController.php
+++ b/app/library/App/Controllers/GaController.php
@@ -58,6 +58,19 @@ class GaController extends CrudResourceController {
 
     }
 
+    /**
+     * Send request to Google Analytics Reporting API
+     *
+     * @param   string  $project_name
+     * @param   string  $view
+     * @param   string  $get_metrics
+     * @param   string  $get_dimensions
+     * @param   string  $start
+     * @param   string  $end
+     * @param   bool    $chart
+     * @param   string  $filter_expression
+     * @return  array
+     */
     public function sendGaRequest($project_name, $view, $get_metrics, $get_dimensions, $start, $end, $chart = false, $filter_expression = null) {
 
         putenv('GOOGLE_APPLICATION_CREDENTIALS=/var/www/phalcon/'.self::SECRET_JSON);
@@ -92,7 +105,7 @@ class GaController extends CrudResourceController {
             }
         }
 
-        //Create the ReportRequest object.
+        /** Create the ReportRequest object.  **/
         $request = new Google_Service_AnalyticsReporting_ReportRequest();
         $request->setViewId($view);
         $request->setDateRanges($dateRange);
@@ -110,7 +123,7 @@ class GaController extends CrudResourceController {
 
         $response =  $analytics->reports->batchGet($body);
 
-        //have to rewrite code below (2 rows)
+        /** can be refactored (code below 2 rows)  **/
         $response = $response->toSimpleObject();
         $response = $response->reports[0]['data']['rows'];
 
@@ -124,6 +137,13 @@ class GaController extends CrudResourceController {
 
     }
 
+    /**
+     * Data-transformer for tables. Used by default.
+     *
+     * @param   array   $response
+     * @param   string  $project_name
+     * @return  array
+     */
     public static function responseDataTransform(array $response, $project_name) {
 
         $result = [];
@@ -148,6 +168,13 @@ class GaController extends CrudResourceController {
 
     }
 
+    /**
+     * Data-transformer for charts, when query string contains "?chart=true"
+     *
+     * @param   array   $response
+     * @param   string  $project_name
+     * @return  array
+     */
     public static function responseChartTransform(array $response, $project_name) {
 
         $result = [];
@@ -171,11 +198,9 @@ class GaController extends CrudResourceController {
     }
 
 
-
-
-
-
-
+    /**
+     * without usage, from google docs.
+     */
     public function printResults($reports) {
         $res = '';
         for ( $reportIndex = 0; $reportIndex < count( $reports ); $reportIndex++ ) {
--
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