Pass value from my view to my model - mysql

Question

i want to pass a value from my view to my model. i want to pass the $plate value to my model to get all the data that will match the $plate. here is my code:
View
<a href="<?=base_url()?>services/view_services?plate=<?php echo $plate; ?>">
<button type="button" class="btn btn-primary">View Services</button>
Controller
public function view_services()
{
$data['results'] = $this->Services_model->fetch_car_services($config['per_page'], $page);
$this->load->view('car_services', $data);
}
Model
public function fetch_car_services($plate)
{
$this->db->where('car_plate_number =', $plate);
$this->db->order_by('created_datetime', 'DESC');
$query = $this->db->get('service_jobs');
$result = $query->result();
$this->db->save_queries = false;
return $result;
}
it doesn't seem to work. Thanks in advance.

Answer 1

You have to get the variable somehow, using your method:
//services/view_services?plate=someplate
public function view_services() {
$plate = $this->input->get('plate');
if (is_null($plate)) {
// error!
}
$data['results'] = $this->Services_model->fetch_car_services($plate);
$this->load->view('car_services', $data);
}
a better way of doing things:
//services/view_services/someplate
public function view_services($plate = null) {
if (is_null($plate)) {
// error!
}
$data['results'] = $this->Services_model->fetch_car_services($plate);
$this->load->view('car_services', $data);
}
Please check for errors! I already did half the work for you here, you just have to figure out how you want to handle them. This also includes checking if num_rows > 0 in your model or count($data['results']) > 0 in your controller and sending an error if that is the case. Your foreach in your view will fail if you don't.

Answer 2

View :
Controller:
public function view_services($plate)
{
$data['results'] = $this->Services_model->fetch_car_services($config['per_page'], $page);
$this->load->view('car_services', $data);
}