Move restful api response helper to helpers

Author: ngekoding

application/controllers/api/v1/User.php

@@ -22,7 +22,7 @@ public function __construct()
 
 	public function index()
 	{
-        $this->send_success_response($this->users);
+        return send_success_response($this->users);
 	}
 
     public function show($id)
@@ -31,12 +31,12 @@ public function show($id)
 
         if ($found !== FALSE) {
             $user = $this->users[$found];
-            $this->send_success_response($user);
+            return send_success_response($user);
         }
 
-        $this->send_response([
+        return send_response([
             'success' => FALSE,
             'error' => 'There is no user with the given ID.'
-        ], self::HTTP_NOT_FOUND);
+        ], HTTP_NOT_FOUND);
     }
 }

application/core/MY_Controller.php

@@ -3,18 +3,6 @@
 
 class MY_Controller extends CI_Controller {
 
-    const HTTP_OK = 200;
-    const HTTP_CREATED = 201;
-    const HTTP_NOT_MODIFIED = 304;
-    const HTTP_BAD_REQUEST = 400;
-    const HTTP_UNAUTHORIZED = 401;
-    const HTTP_FORBIDDEN = 403;
-    const HTTP_NOT_FOUND = 404;
-    const HTTP_METHOD_NOT_ALLOWED = 405;
-    const HTTP_NOT_ACCEPTABLE = 406;
-    const HTTP_UNPROCESSABLE_ENTITY = 422;
-    const HTTP_INTERNAL_ERROR = 500;
-
     /**
      * Defining if the request must an ajax request
      * 
@@ -26,10 +14,16 @@ class MY_Controller extends CI_Controller {
     public function __construct()
     {
         parent::__construct();
+        
+        $this->load->helper('api');
 
         $this->ajax_request_validator();
     }
 
+    /**
+     * Checking if the current requested method 
+     * must be called by ajax
+     */
     private function ajax_request_validator()
     {
         $error = FALSE;
@@ -52,61 +46,6 @@ private function ajax_request_validator()
             }
         }
 
-        if ($error) self::send_bad_request('Ajax request only!');
-    }
-
-    public static function send_response($data, $response_code = self::HTTP_OK)
-    {
-        http_response_code($response_code);
-        header('Content-Type: application/json');
-        echo json_encode($data);
-        exit;
-    }
-
-    public static function send_success_response($payload = FALSE)
-    {
-        $data['success'] = TRUE;
-
-        if ($payload !== FALSE) {
-            $data['data'] = $payload;
-        }
-
-        self::send_response($data, self::HTTP_OK);
-    }
-
-    public static function send_unprocessable_entity($payload = FALSE)
-    {
-        $data['success'] = FALSE;
-        $data['error'] = 'Unprocessable Entity';
-
-        if ($payload !== FALSE) {
-            $data['data'] = $payload;
-        }
-
-        self::send_response($data, self::HTTP_UNPROCESSABLE_ENTITY);
-    }
-
-    public static function send_internal_server_error($error_message = FALSE)
-    {
-        $data['success'] = FALSE;
-        $data['error'] = 'Internal Server Error';
-
-        if ($error_message !== FALSE) {
-            $data['error'] = $error_message;
-        }
-
-        self::send_response($data, self::HTTP_INTERNAL_ERROR);
-    }
-
-    public static function send_bad_request($error_message = FALSE)
-    {
-        $data['success'] = FALSE;
-        $data['error'] = 'Bad Request';
-
-        if ($error_message !== FALSE) {
-            $data['error'] = $error_message;
-        }
-
-        self::send_response($data, self::HTTP_BAD_REQUEST);
+        if ($error) send_bad_request('Ajax request only!');
     }
 }

application/helpers/api_helper.php

@@ -0,0 +1,68 @@
+<?php
+
+const HTTP_OK = 200;
+const HTTP_CREATED = 201;
+const HTTP_NOT_MODIFIED = 304;
+const HTTP_BAD_REQUEST = 400;
+const HTTP_UNAUTHORIZED = 401;
+const HTTP_FORBIDDEN = 403;
+const HTTP_NOT_FOUND = 404;
+const HTTP_METHOD_NOT_ALLOWED = 405;
+const HTTP_NOT_ACCEPTABLE = 406;
+const HTTP_UNPROCESSABLE_ENTITY = 422;
+const HTTP_INTERNAL_ERROR = 500;
+
+function send_response($data, $response_code = HTTP_OK)
+{
+    http_response_code($response_code);
+    header('Content-Type: application/json');
+    echo json_encode($data);
+    exit;
+}
+
+function send_success_response($payload = FALSE)
+{
+    $data['success'] = TRUE;
+
+    if ($payload !== FALSE) {
+        $data['data'] = $payload;
+    }
+
+    send_response($data, HTTP_OK);
+}
+
+function send_unprocessable_entity($payload = FALSE)
+{
+    $data['success'] = FALSE;
+    $data['error'] = 'Unprocessable Entity';
+
+    if ($payload !== FALSE) {
+        $data['data'] = $payload;
+    }
+
+    send_response($data, HTTP_UNPROCESSABLE_ENTITY);
+}
+
+function send_internal_server_error($error_message = FALSE)
+{
+    $data['success'] = FALSE;
+    $data['error'] = 'Internal Server Error';
+
+    if ($error_message !== FALSE) {
+        $data['error'] = $error_message;
+    }
+
+    send_response($data, HTTP_INTERNAL_ERROR);
+}
+
+function send_bad_request($error_message = FALSE)
+{
+    $data['success'] = FALSE;
+    $data['error'] = 'Bad Request';
+
+    if ($error_message !== FALSE) {
+        $data['error'] = $error_message;
+    }
+
+    send_response($data, HTTP_BAD_REQUEST);
+}