Model in CodeIgniter

Model classes reside in the application/models/ directory. They can be nested within sub-directories.

The basic syntax for the model is:

class Model_name extends CI_Model {

}

Let’s see the following example for a better understanding of the model:

class Blog_model extends CI_Model {

	public function add() {
		$data = [
			‘title’		=> ‘Title’,
			‘description’	=> ‘Description’
		];
		// insert(‘table_name‘, ‘array_of_object’)
		$this->db->insert(‘blog_info’, $data);
	}

	public function get_blog_list() {
		$query = $this->db->get(‘blo_info’);
		return $query->result();
	}

}

The file name must match the class name and the first letter of the Model class must be a capital letter.

Basic syntax: $this->load->model('model_name');

If your model is located in a sub-directory, include the relative path from your model’s directory. For example, if you have a model located at application/models/user/Profile.php you’ll load it using:

Once the model is loaded, you can access all the public methods using an object with the same name as your class:

$this->load->model('model_name');
$this->model_name->method();

Here is an example of a controller, that loads a model, then serves a view:

class Blog extends CI_Controller {

	public function index() {
    	$this->load->model(‘blog_model’);

        $data[‘list’] = $this->blog_model->get_blog_list();

        $this->load->view('about_us', $data);
   	}
}