How to pass data from model to controller (CodeIgniter, session help) - php

Question

First sorry for my english( it is not my main language ).
I am new in CodeIgniter3 and i like it.
Lets say this is my model:
function login($uname, $upassword)
{
$this->db->where('uname', $uname);
$this->db->where('upassword', $upassword);
$query = $this->db->get('zamestnanci');
foreach ($query->result() as $row) {
$data['zamestnanec'] = $row->tpred_zamestnanci." ".$row->meno_zamestnanci. " ".$row->priezvisko_zamestnanci." ".$row->tza_zamestnanci;;
}
return ($data);
}
And this is my controller:
//Funkcia na prihlásenie používatela
function loginUser()
{
//Načítať model
$this->load->model('user_model');
$uname = $this->input->post('uname');
$upassword = $this->input->post('upassword');
$meno = $this->user_model->login($uname, $upassword);
//Ak sa meno a heslo zhoduje
if ($this->user_model->login($uname, $upassword))
{
$this->session->set_userdata('user', $meno);
$data['user'] = $this->session->userdata('user');
redirect('/otk/', $data);
}
else
{
redirect('/user/');
}
}
I want to ask you how to pass/display data from model to session. To $this->session->userdata('user').
Can you explain me the correct process off passing data from model to controller and from model to session. (like if you were trying to explain to a man who is thinking slowly).
I do not want links to documentation, just one or few persons who can explain it on example.

Answer 1

you can pass information from model to controller in two ways.
By using session
first fetch information using query and return that array to controller.
it is good if you return data to controller first then in controller
set up the session by using that returned array.
As in this example.
Model
function login($uname, $upassword)
{
$this->db->select("*");
$tthis->db->from("table_name")
$this->db->where('uname', $uname);
$this->db->where('upassword', $upassword);
$query = $this->db->get('zamestnanci');
// you can user result_array() to get all information in array form.
$this->result = $query->result_array();
return $this->result;
}
In Controller
//Funkcia na prihlásenie používatela
function loginUser()
{
//Načítať model
$this->load->model('user_model');
$uname = $this->input->post('uname');
$upassword = $this->input->post('upassword');
$meno = $this->user_model->login($uname, $upassword);
//Ak sa meno a heslo zhoduje
if ($this->user_model->login($uname, $upassword))
{
$this->session->set_userdata('user', $meno); // here you are setting up the session.
$data['user'] = $this->session->userdata('user');
redirect('/otk/', $data);
}
else
{
redirect('/user/');
}
}

Answer 2

Hope this will help you :
get all the user information (in array) from the model whatever you want :
In controller :
First way :
$uname = $this->input->post('uname');
$upassword = $this->input->post('upassword');
$lname = $this->input->post('lname');//example
$session_arr['uname'] = $uname;
$session_arr['fullname'] = $fname.' '.$lname; // example
$this->session->set_userdata($session_arr);
Second way :
$user = $this->user_model->login($uname, $upassword);
if ($user != false)
{
// Valid user
// $validate containing user details too. to check add this next line
// print_r($validate);die;
$this->session->set_userdata($user);
redirect('/otk/');
}
for more : https://codeigniter.com/user_guide/libraries/sessions.html#initializing-a-session
$user = array(
'username' => 'johndoe',
'email' => 'johndoe#some-site.com',
'logged_in' => TRUE
);
$this->session->set_userdata($user);

Answer 3

Just pass the model to controller whether data is correct or not. no need a big loop there in the model
In Model
function login($uname, $upassword)
{
$this->db->where('uname', $uname);
$this->db->where('upassword', $upassword);
$query = $this->db->get('zamestnanci');
$result = $query->result_array();
$count = count($result); # get how many data passed
if ($count == 1) {
return $result;
}
else
{
return false;
}
}
In Controller
function loginUser()
$this->load->model('user_model');
$uname = $this->input->post('uname');
$upassword = $this->input->post('upassword');
//$meno = $this->user_model->login($uname, $upassword);
//Ak sa meno a heslo zhoduje
$validate = $this->user_model->login($uname, $upassword);
if ($validate != false)
{
# Valid user
# $validate conating user details too. to check add this next line print_r($validate);die;
$this->session->set_userdata('user', $uname);
redirect('/otk/');
}
else
{
# Invalid User
redirect('/user/');
}
}
And in otk function just call session value user