CodeIgniter checking values of checkbox

Question

I'm having an issue with checking the value of a checkbox in CodeIgniter. I am trying to implement the solution found here: Codeigniter checking checkbox value. The following code never never evaluates to true, regardless of the checkbox being checked or not. If I add value="1" to the input, it always evaluates true.

My view:

....
<input name="Tuesday" id="Tuesday" type="checkbox" />
....

<script type="text/javascript">
.on('finished', function(e) {
    var form_data = {
        Tuesday: $('#Tuesday').val(),
        ajax: '1'
    };

    $.ajax({
        url: "<?php echo site_url('opportunity/create_opportunity'); ?>",
        type: 'POST',
        data: form_data,
        dataType: 'json',
        cache: false
    });
})
</script>

My controller:

function create_opportunity() {

     if($this->input->post('ajax')) {
        $checked = $this->input->post('Tuesday');

        if((int) $checked == 1) {
            $Tuesday = array(
                'Week_Day_Id' => 2,
                'Opportunity_Id' => 18,
                'Preferred' => $checked
            );
        }

        $this->ion_auth_model->create_opportunity($Opportunity, $Tuesday);
    }
}

Thanks for any help you can provide.

Please var_dump($checked) and show the output.

user1741851
– user1741851

2014-06-23 13:56:19 +00:00
Commented Jun 23, 2014 at 13:56 — user1741851
– user1741851, Commented Jun 23, 2014 at 13:56

user1741851 · Accepted Answer · 2014-06-23 13:59:15Z

0

In your AJAX, you are using $('#Tuesday').val() which will look for value attribute in your HTML. Since value attribute is empty, it might be sending empty.

The solution is to use $('#Tuesday').is(':checked') which will return a Boolean.

In PHP just use if ($checked == TRUE)

answered Jun 23, 2014 at 13:59

user1741851

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5 Comments

Derek Morgan Over a year ago

Thanks for the quick response. After updating the AJAX and the if statement in my controller, it always evaluates to true.

user1741851 Over a year ago

Can you add a var_dump($checked) and show the exact output? Looks like we are missing something trivial.

Derek Morgan Over a year ago

For some reason, var_dump() is returning null in my log file. However, I am able to get this to work if ($checked == 'true'). Looks like my variable type is string?

Derek Morgan Over a year ago

The result of var_dump($checked) is string(4) "true"

user1741851 Over a year ago

Thanks. It seems any string is taken as true. Even if you use == to ensure non strict mode. Here's a detailed explanation and solution to your problem. To be honest, I did not know about this. Though I have dealt with hundreds of forms like these, wonder why I never encountered it.

jamadri · Accepted Answer · 2014-06-23 14:01:14Z

0

It looks like your only checking the value, I would actually check if it's checked or not using jquery and send that value instead. So instead of this:

.on('finished', function(e) {
var form_data = {
    Tuesday: $('#Tuesday').val(),
    ajax: '1'
};

I would do something like this:

.on('finished', function(e) {
var form_data = {
    Tuesday: $('#Tuesday').prop('checked') // this should send a true or false value
    ajax: '1'
};

answered Jun 23, 2014 at 14:01

jamadri

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1 Comment

Derek Morgan Over a year ago

I get the same result as described above using $('#Tuesday').prop('checked')

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