Codeigniter - Update email only if the email doesn't exist in the database

Question

I have an update page for my users where they can edit their name, email and other info.

So far, they can edit everything. Including their email. They can enter an e

Answer 1

Your Javascript file:

$("#form_id").validate({
        rules: {
            email: {
                required: true,
                email: true,
                remote: {
                    type: "post",
                    url: "pathtocontroller/controller.php/checkEmail",
                 }
            }
        },
        messages: {
            email: {
                required: "Please enter Email!",
                email: "Please enter valid Email!",
                remote: "Email already not available!"
            }
        }

Your Controller File:

function checkEmail() {
        $userArr = $this->input->post();
        $id = $this->session->userdata('id');//if you have stored id within session else pass it within remote function
        if (isset($userArr["email"])) {
            if ($id != '') {
                $ext_cond = "id !='" . $id . "'";
            }
            echo $this->your_model_name->getUserValidation('your_email_field_name', $userArr['email'], $ext_cond);
            exit;
        }
        exit;
    }

Your Model:

public function getUserValidation($usertype = '', $value = '', $cond = '') {

        if ($usertype != '' && $value != '') {
            $this->db->select($usertype);
            $this->db->from($this->main_table);
            if ($cond != '') {
                $this->db->where($cond);
            }

            if (is_array($usertype)) {
                foreach ($usertype as $key => $type_value) {
                    $this->db->where($type_value, $value[$key]);
                }
            } else {
                $this->db->where($usertype, $value);
            }

            $user_data = $this->db->get()->result_array();
//            echo $this->db->last_query();exit;
            if (is_array($user_data) && count($user_data) > 0) {
                return "false";
            } else {
                return "true";
            }
        } else {
            return "false";
        }
    }