How to call method name in form action while working with REST API using codeigniter?

Question

Hello everyone I am working on REST API in Codeigniter but i am surprise in normal codeigniter when we give method name after controller for example(localhost/project_name/controller/user_get) it will get all users from table but while working with REST API in Codeigniter I am getting unknown method error please tell me how to define method name while rest api in form action

below i have written my code

in view page when i want to click button in form it should call method and retrieve all users

<form method="post" action="<?=base_url('index.php/Api/user_get')?>">

    <button>Click Here</button>


</form>

controller code

<?php

defined('BASEPATH') OR exit('No direct script access allowed');

require(APPPATH . '/libraries/REST_Controller.php');

class Api extends REST_Controller {

    public function __construct() {
        parent::__construct();
        $this->load->model('user_model');
    }


  public function user_get() {   //this method will get all users from table
            $r = $this->user_model->read();
            $this->response($r);
        }


      public function user_put() { //this method will insert users details 
           $id = $this->uri->segment(3);
            $data = array('name' => $this->input->get('user_name'),
                'pass' => $this->input->get('user_password'),
                'type' => $this->input->get('user_type')
            );
            $r = $this->user_model->update($id, $data);
            $this->response($r);
        }

}

Below code written in model

public function read() {

   $query = $this->db->query("select * from `tbl_user`");

   return $query->result_array();

}

Getting error like this

Answer 1

try this :

function users_get()
{
    $users = $this->user_model->get_all();

    if($users)
    {
        $this->response($users, 200);
    }

    else
    {
        $this->response(NULL, 404);
    }
}

Answer 2

The Rest Controller is designed for the purpose of reacting with the different kind of HTTP Methods which means you have only one URL but a lot of varying methods.

the allowed methods by default are get, delete, post, put, options, patch, head. For more clarification take a look here:

Real World Example based on your question:

First of all, everytime you type in an address in your browser and press Enter you make a GET Request.

You don't need the _get suffix in your browser - the rest Controller will take care of. It recognises this and adds in a self acting way the _get suffix to your function which means, you've to type in your browser:

localhost:81/sample_api/index.php/api/user/

The Rest Controller now checks your Type of Request, recognises it as a GET request and tries to call the function user_get.

The same applies to your form, if you build a form with the method POST and an action like <?=base_url('index.php/Api/user')?> the Controller knows its a POST Request and tries to call the function user_post.

So your controller should look like:

defined('BASEPATH') OR exit('No direct script access allowed');

require(APPPATH . '/libraries/REST_Controller.php');

class Api extends REST_Controller 
{

    public function __construct() {
        parent::__construct();
        $this->load->model('user_model');
    }


    public function user_get() {   
        //this method will get all users from table
        $r = $this->user_model->read();
        $this->response($r);
    }


    public function user_post() { //this method will insert users details 
        $id = $this->uri->segment(3);
        $data = array(
            'name' => $this->input->post('user_name'),
            'pass' => $this->input->post('user_password'),
            'type' => $this->input->post('user_type')
        );
        $r = $this->user_model->update($id, $data);
        $this->response($r);
    }

}

and your view

<form method="post" action="<?=base_url('index.php/api/user')?>">
    <button>Click Here</button>
</form>

Update

The Rest_Controller allows you to define the different kind of Request Methods through an field called _method, which means you can use manually set it in your form like the following:

<form method="post" action="<?=base_url('index.php/api/user')?>">
    <input type="hidden" name="_method" value="put" />
    <button>Click Here</button>
</form>

You just have to set the variable enable_emulate_request in your rest config to true.

You can find this information here

---

All this magic stuff is happening in the _remap method as you can see here.

Answer 3

You are not add echo and second thing not load helper url it will help you.

1. If you want to post than you will correct it
2. If you want to get than you ha

<form method="post" action="<?php echo base_url('index.php/Api/user_put'); ?>">
<form method="get" action="<?php echo base_url('index.php/Api/user_get'); ?>">

ve to call like