REST API with CodeIgniter - php

Question

I am creating a web-service backend for a mobile app I am developing. (I am an experience Obj-C developer, not a web-designer!) Essentially I would like to use Codeigniter and Phil Sturgeon's RESTful API Server https://github.com/philsturgeon/codeigniter-restserver however, I'm having some trouble getting it all setup and working.
I have MySQL database that is setup with data in it. And I need some help writing a CodeIgniter PHP model and controller that returns JSON data of what is inside that database. All of the tutorials and forum post's i have found deal with hardcoded data in the controler, not a MySQL database. I would ideally like to have the URL formatted like this http://api.mysite.com/v1/search?id=1&name=foo&city=bar , I could potentially have 50+ parameters to pass in the url.
Using Phil's code, I have come up with this as my controller:
public function index_get()
{
if (!$this->get('id'))
{
$this->response(NULL, 400);
}
$data = $this->grid_m->get_id($this->get('id'));
if ($data)
{
$this->response($data, 200);
}
else
{
$this->response(NULL, 404);
}
}
That only gets me one search term: id?=# .. I need to know how to get multiple search terms
Here is my Codeigniter model:
<?php
class Grid_m extends CI_Model
{
function get_all()
{
$query = $this->db->get('grid');
if ($query->num_rows() > 0)
{
return $query->result();
}
return FALSE;;
}
This just returns EVERYTHING in my MySQL database regardless of what id or url term I pass it in the URL.
I'm a big noob when it comes to developing my own custom API so any suggestions on how to fix my controller and database model would be a huge help!
Thanks for the help!
-brian

Answer 1

This is old question but if somebody go here and still need help, try these code:
In your controller:
public function index_get()
{
$where = '';
if ($this->get('id')) // search by id when id passed by
{
$where .= 'id = '.$this->get('id');
}
if ($this->get('name')) // add search by name when name passed by
{
$where .= (empty($where)? '' : ' or ')."name like '%".$this->get('name')."%'";
}
if ($this->get('city')) // add search by city when city passed by
{
$where .= (empty($where)? '' : ' or ')."city like '%".$this->get('city')."%'";
}
// you can add as many as search terms
if ( ! empty($where))
{
$data = $this->grid_m->get_searched($where);
if ($data)
{
$this->response($data, 200);
}
else
{
$this->response(NULL, 404);
}
}
else
{
$this->response(NULL, 404);
}
}
In your model, create get_searched function:
class Grid_m extends CI_Model
{
function get_searched($where = NULL)
{
if ( ! is_null($where))
{
$this->db->where($where);
$query = $this->db->get('grid');
if ($query->num_rows() > 0)
{
return $query->result();
}
}
return FALSE;
}
}

Answer 2

User Codeigniter's Active record to build proper query, you can build any type of query using methods of active record, refer following example I have just added one condition in it you can add more conditions as per your need.
<?php
class Grid_m extends CI_Model
{
function get_all()
{
$this->db->select('col1, col2, col3')->where('id', 5);
$query = $this->db->get('grid');
if ($query->num_rows() > 0)
{
return $query->result();
}
return FALSE;;
}
}

Answer 3

Please check you query
$query = $this->db->get_where('grid', array('id' => $id));