Codeigniter Restful API无法正常工作

Question

I have a Codeigniter setup where I installed the Restful API thing. I created an API-folder in my application->controller->api and after that i created an API which looks like this:

<?php

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

class Allartists extends REST_Controller{

function artists_get()
{
    if(!$this->get('artist_id'))
    {
        $this->response(NULL, 400);
    }

    $artists = $this->artist_model->get( $this->get('artist_id') );

    if($artists)
    {
        $this->response($artists, 200);
    }
    else
    {
        $this->response(array('error' => 'Couldn\'t find any artists!'), 404);
    }
}

?>

In my application->models -folder I have the file artist_model.php which looks like this:

<?php

Class artist_model extends CI_Model
{
   function get_all_artists(){
    $this->db->select('*');
    $this->db->from('artists');
    return $this->db->get();
   }
}

?>

So, when I type http://localhost/myprojects/ci/index.php/api/Allartists/artists/ I get 400 - Bad Request -error... when I type http://localhost/myprojects/ci/index.php/api/Allartists/artists/artist_id/100 I get PHP error Undefined property: Allartists::$artist_model - So what is going on here?

Answer 1

You need to load your model. Add a constructor to Allartists and load it.

class Allartists extends REST_Controller{

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

    // ...
}

PS Your model needs to have the 1st letter in its class name capitalized (see: http://ellislab.com/codeigniter/user-guide/general/models.html ):

class Artist_model extends CI_Model{
    // ...
}

UPDATE: You are looking for $this->get('artist_id') . This will never be set as you are not sending a $_GET['artist_id'] value ( ?artist_id=100 in the URL). You need to get the $artist_id another way in your controller.

function artists_get($artist_id=FALSE)
{
    if($artist_id === FALSE)
    {
        $this->response(NULL, 400);
    }

    $artists = $this->artist_model->get( $artist_id );

    if($artists)
    {
        $this->response($artists, 200);
    }
    else
    {
        $this->response(array('error' => 'Couldn\'t find any artists!'), 404);
    }
}

Then go to:

http://localhost/myprojects/ci/index.php/api/Allartists/artists/100

Or , keeping your current code, you could simply change the URL to:

http://localhost/myprojects/ci/index.php/api/Allartists/artists?artist_id=100