How to pass a message from model to controller codeigniter? - codeigniter

Question

I want to pass a message variable in some conditions to controller from model in codeigniter. But when i am doing this it is printing only "No" everytime.
Model is
public function add_city() {
/* Storing form data into an array */
$data = array(
'city_name' => $this->input->post('city'),
'city_overview' => $this->input->post('overview')
);
/* Checking if already exist in database */
$query = $this->db->query("SELECT * FROM city_tbl WHERE city_name='" . $data['city_name'] . "' ORDER BY id ASC");
$count_row = $query->num_rows();
if ($count_row > 0) {
$msg = "No";
} else {
$this->db->insert('city_tbl', $data);
$msg = "Yes";
}
return $msg;
}
And Controller is
public function addingCity() {
$this->add_model->add_city();
var_dump($msg);
//redirect("/city");
}

Answer 1

Try This also
public function add_city() {
$data = array(
'city_name' => $this->input->post('city'),
'city_overview' => $this->input->post('overview')
);
/* Checking if already exist in database */
$query = $this->db->query("SELECT * FROM city_tbl WHERE city_name='" . $data['city_name'] . "' ORDER BY id ASC");
$count_row = $query->num_rows();
if ($count_row > 0) {
$msg = "No";
} else {
$this->db->insert('city_tbl', $data);
$msg = "Yes";
}
return $msg;
}
On controller redirect message with get method -
public function addingCity() {
$msg = $this->add_model->add_city();
redirect("/city?msg=".$msg);
}
And finally print this message on view page
echo $this->input->get('msg');

Answer 2

You need to assign value to $msg in your controller
public function addingCity() {
$msg=$this->add_model->add_city();// assign
var_dump($msg);
//redirect("/city");
}

Answer 3

Try this
public function add_city() {
$city_name = $this->input->post('city');
$city_overview = $this->input->post('overview');
$query = $this->db->query("SELECT * FROM city_tbl WHERE city_name='$city_name' ORDER BY id ASC");
$result = $query->result_array()
$count = count($result);
if(empty($count))
{
$msg = "No";
return $msg;
}
else{
$data = array(
'city_name'=>$this->input->post('city'),
'city_overview'=>$this->input->post('overview') );
$this->db->insert('city_tbl', $data);
$msg = "Yes";
return $msg;
}
}
In Controller
public function addingCity() {
$msg = $this->add_model->add_city();
echo $msg;
}
To pass data to view
public function addingCity() {
$data['msg'] = $this->add_model->add_city();
$this->load->view("filename", $data); # ex $this->load->view("index", $data);
}

Answer 4

Error is in your controller function
Try with this code
public function addingCity() {
$msg = $this->add_model->add_city();
echo $msg;die;
//redirect("/city");
}