codeigniter ajax error user email check

I have created a simple code ajax request for checking email availability in codeigniter framework. but, I get everytime error. and don't know how to resolve it. below is my footer js script(after jquery and other external scripts).

<script>

    $(document).ready(function() {
        $("#loading").hide();
        $("#email").blur(function() {
            var email_val = $("#email").val();
            var filter = /^[a-zA-Z0-9]+[a-zA-Z0-9_.-]+[a-zA-Z0-9_-]+@[a-zA-Z0-9]+[a-zA-Z0-9.-]+[a-zA-Z0-9]+.[a-z]{2,4}$/;
            if (filter.test(email_val)) {
                // show loader
                $('#loading').show();
                jQuery.ajax({
                    type: "POST",
                    url: "<?php echo site_url()?>users/check_email_ajax",
                    dataType: 'json',
                    data: {
                        '<?php echo $this->security->get_csrf_token_name(); ?>' : '<?php echo $this->security->get_csrf_hash(); ?>',
                        'email': 'email_val'
            },

                success: function (response) {
                    if(response){
                        $('#loading').hide();
                        console.log(response.message);
                        $('#msg').html(response.message)
                        $('#msg').show().delay(10000).fadeOut();
                    }
                },
                    error: function(error){
                        $('#loading').hide();
                        console.log("There is some errors on server : " + error.error);
                    }
                })
            }
        });
    });

and this is my User Controller function to check email in db

    public function check_email_ajax(){
    // allow only Ajax request
    if($this->input->is_ajax_request()) {
        // grab the email value from the post variable.
        $email = $this->input->post('email');
        // check in database - table name : users  , Field name in the table : email
        if(!$this->form_validation->is_unique($email, 'users.email')) {
            // set the json object as output
            $this->output->set_content_type('application/json')->set_output(json_encode(array('message' => 'The email is already taken, choose another one')));
        }else{
            $this->output->set_content_type('application/json')->set_output(json_encode(array('message' => 'you can use this email')));
        }
    }
}

and in the registration form I have this field for email input:

<div class="col-sm-5">
                <input type="email" id="email" name="email" class="form-control">
                <span id="loading"><img src="<?php echo base_url(); ?>ajax-loader.gif" alt="Ajax Indicator" /></span>
            <div id="msg"></div>
            </div>

but now every time I change the value of input. I get error on console.log

There is some errors on server : function (){if(c){var a=c.length;m(arguments),i?k=c.length:e&&e!==!0&&(j=a,n(e[0],e[1]))}return this}

anyone knows how to fix it ?

codeigniter ajax error user email check

3 Answers