Getting Error in CodeIgniter RESTful API - codeigniter

Question

defined('BASEPATH') OR exit('No direct script access allowed');
require('application/libraries/REST_Controller.php');
use Restserver\Libraries\REST_Controller;
class demo extends REST_Controller {
function __construct(){
parent::__construct();
}
public function demo1_get()
{
echo 'demo 1';
}
}
Error Image
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This is My REST_Controller
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Hi, I m getting Error for making Codeigniter RESTful API. Please Help me to solve this problem.

Answer 1

It should be like this :
Make sure you have REST_Controller.php in your libraries folder
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
require_once APPPATH . '/libraries/REST_Controller.php';
class Demo extends REST_Controller
{
function __construct(){
parent::__construct();
}
public function demo1_get()
{
echo 'demo 1';
}
}

Answer 2

You need to follow the link https://itsolutionstuff.com/post/codeigniter-3-restful-api-tutorialexample.html
and then after you run the code you will get a small error Unable to load the requested language file: language/english/rest_controller_lang.php
The problem is that codeigniter can't find the rest_controller translations. You just need to create this file /application/languages/english/rest_controller_lang.php
Then copy & paste this code inside:
<?php
/*
* English language
*/
$lang['text_rest_invalid_api_key'] = 'Invalid API key %s'; // %s is the REST API key
$lang['text_rest_invalid_credentials'] = 'Invalid credentials';
$lang['text_rest_ip_denied'] = 'IP denied';
$lang['text_rest_ip_unauthorized'] = 'IP unauthorized';
$lang['text_rest_unauthorized'] = 'Unauthorized';
$lang['text_rest_ajax_only'] = 'Only AJAX requests are allowed';
$lang['text_rest_api_key_unauthorized'] = 'This API key does not have access to the requested controller';
$lang['text_rest_api_key_permissions'] = 'This API key does not have enough permissions';
$lang['text_rest_api_key_time_limit'] = 'This API key has reached the time limit for this method';
$lang['text_rest_ip_address_time_limit'] = 'This IP Address has reached the time limit for this method';
$lang['text_rest_unknown_method'] = 'Unknown method';
$lang['text_rest_unsupported'] = 'Unsupported protocol';
Hope this helps