Controller only passing first argument to Model - codeigniter

Question

Hello peoples of the stackoverflow.com , this is my first question, be gentle :) .
So just like the question, my controller only sends first argument out of 4. If i replace positions of the arguments he will again send only the first one.
This is meant for search if its important.
Anyway this is the code :
Controller:
public function groups($question = NULL, $city = NULL , $country = NULL, $area = NULL){
if ($question == NULL && $city == NULL && $country == NULL && $area == NULL) {
$groups = $this->ModelSt->getGroups();
} else {
$groups = $this->ModelSt->search($question, $city , $country, $area);
}
$data['groups'] = $groups;
$data['controller'] = "UserSt";
$data['method']= "search";
$this->loadView($data, "groups.php");
}
public function search() {
$question = $this->input->get('question');
$city = $this->input->get('city');
$country = $this->input->get('country');
$area = $this->input->get('area');
$this->groups($question, $city, $country, $area);
}
ModelSt:
public function search($question, $city , $country, $area) {
$query = "SELECT * FROM `group` WHERE `status`='1' ";
if($question && !empty($question)){
$query .= " AND (`name` LIKE '%".$question."%' OR `desc` LIKE '%".$question."%')";
}
if($city && !empty($city)){
$query .= " AND (`city` LIKE '".$city."')";
}
if($country && !empty($country)){
$query .= " AND (`country` LIKE '".$country."')";
}
if($area && !empty($area)) {
$query .= " AND (`area` LIKE '". $area ."')";
}
$result = $this->db->query($query);
$result = $result->result_array();
return $result;
}

Answer 1

Send parameters as array like this:
$this->ModelSt->search(
array(
'question' => $question,
'country' => $country,
'city' => $city,
'area' => $area
)
);
Your model:
public function search($post)
{
$question = isset($post['question']) && !is_null($post['question']) && !empty($post['question']) ? $post['question'] : NULL;
$city = isset($post['city']) && !is_null($post['city']) && !empty($post['city']) ? $post['city'] : NULL;
$country = isset($post['country']) && !is_null($post['country']) && !empty($post['country']) ? $post['country'] : NULL;
$area = isset($post['area']) && !is_null($post['area']) && !empty($post['area']) ? $post['area'] : NULL;
$this->db->select('name, city, country, area');
$this->db->from('group');
$this->db->where('status', 1);
$this->db->group_start();
/**
* Question is not null
*/
if($question != NULL)
{
$this->db->group_start();
$this->db->like('name', $question);
$this->db->or_like('desc', $question);
$this->db->group_end();
}
/**
* City is not null
*/
if($city != NULL)
$this->db->like('city', $city);
/**
* Country is not null
*/
if($country != NULL)
$this->db->like('country', $country);
/**
* Area is not null
*/
if($area != NULL)
$this->db->like('area', $area);
$this->db->group_end();
$this->db->order_by('name', 'asc');
return $this->db->get()->result();
}

Answer 2

Ok, after some time not touching anything in the code, variables 1,3 and 4 are being passed to Model, but variable 2 wont. Didnt touch anything , it simply started working. The other day same thing happened with "upload" library of Codeigniter, didnt work for 40mins, than it started working for no reason... I guess ill have to wait for variable $city to get passed. Thank you for answering!