How to give “Email does not exist” using this call back function? - php

Question

I have already tried for "Already exists", but I need help for "Does not exist" instead of "Already exists" using same function.
login.php
public function email_exist($id) {
$this->db->where('email', $id);
$query = $this->db->get('login');
if ($query->num_rows() > 0) {
$this->form_validation->set_message(__FUNCTION__, 'Already exist!');
;
return FALSE;
} else {
return TRUE;
}
}
If the email does not exist in the database, it has to show email does not exists in login page.

Answer 1

Check row exist
Get row having email id, if not get data then return true;
public function email_exist($id) {
$this->db->where('email', $id);
$exist = $this->db->get('login')->row_array();
if (!$exist) {
return true;
}
}
But if you want a login scenario, then you can do as
public function email_exist($id) {
$this->db->where('email', $id);
$exist = $this->db->get('login')->row_array();
if ($exist) {
// START SESSION HERE
return true;
} else {
// give email not exist message
return false;
}
}
if you login via ajax, then you can echo "email_not_exist" from controller

Answer 2

//controller
function email_exist($email) {
$this->load->model('model_name');
$emailArray = $this->model_name->get_data_by_email($email);
if (!empty($emailArray)) {
$this->form_validation->set_message("validate_email", "Email already exists ");
return FALSE;
} else {
return TRUE;
}
}
//model
function get_data_by_email($email) {
return $this->db->where('email', $email)->get('login)->row_array();
}