Codeigniter multiple checkbox issue

Question

Im using codeigniter and I have a very simple form, which has a few checkboxes:

<input type="checkbox" name="user_assign[]" value="' . $row->user_id . '">

Now, the values are definately getting posted because I can see them through firebug.

user_assign[]100002
user_assign[]100003
course_name Asbestos

But the below is empty? and i just dont understand?

$user_assign = $this->input->post('user_assign');

How is this possible?

Controller (which is damn messy because I've tried 1001 things)

    function update_course_assignment_org() {

    $data = $this->input->post('user_assign');

    $this->load->model('courses_model');
    $this->load->model('assignment_model');

    // get course id from posted course name
    $course_name = $this->input->post('course_name');
    $course_object = $this->courses_model->get_course_id($course_name);
    $course_id = $course_object[0]->course_id;

    //$user_assign = substr(implode(', ', $this->input->post('user_assign')), 0);


    //foreach ($this->input->post('user_assign') as $key => $value) {
        $test_obj = array(
           'course' => $data,
           'users' => $course_id,
           'org' => $this->input->post('course_name')
        ); 
    //}     

    //$this->assignment_model->save_org_assignments($user_ids);

    $this->template->write('title', 'Assignments');
    $this->template->write('navigation_strip', $this->load->view('navigation', array(), TRUE));         
    $this->template->write('content', $this->load->view('/assignments/assign_test', $test_obj, TRUE));

    $this->template->render();      


}

View (which is very basic because I've stripped everything down in order to try and get these values through)

                <div class="row">
                <div class="col-md-4">
                    <?php var_dump($course); print_r($course); ?>
                </div>
                <div class="col-md-4">
                <?php print_r($users); ?>
                <?php print_r($org); ?>
                </div>                  
            </div>

The form that contains the checkboxes

                        <?php echo form_open_multipart('assignments/update_course_assignment_org');?>
                        <table>
                            <tr>
                                <th>User</th>
                                <th>Assign course</th>
                            </tr>
                            <?php
                                foreach($users as $row) {                           

                                    echo '<tr>';
                                        echo '<td>' . $row->fname . ' ' . $row->sname . '</td>'; 
                                        echo '<td><input type="checkbox" name="user_assign[]" value="' . $row->user_id . '"></td>'; 
                                    echo '</tr>';

                                }
                            ?>
                            <tr>
                                <td>
                                    <input type="hidden" name="course_name" value="<?php echo $course[0]->course_name; ?>">                 
                                    <input type="submit" value="Assign" />
                                </td>
                            </tr>                               
                        </table>
                    </form>

Refer: http://stackoverflow.com/questions/3112690/getting-data-from-post-array-in-codeigniter — Insane Skull, Jan 07 '16 at 05:09

score 1 · Answer 1 · answered Jan 07 '16 at 05:22

1

the return post is an array , so try the following

$user_assign = $this->input->post('user_assign');
echo "<pre>";
print_r($user_assign);

answered Jan 07 '16 at 05:22

krishnakumar kk

289
2
5

This just echos
– frobak Jan 07 '16 at 09:59
have you checked check box before submitting ? – krishnakumar kk Jan 07 '16 at 10:01
Yes. and I can see in the post info via Firebug that the correct checkboxes etc are being posted. The data is there, but for some strange reason its not being picked up by the controller. – frobak Jan 07 '16 at 10:02
are you posting it via ajax ? is there any url so that i can view the working ? – krishnakumar kk Jan 07 '16 at 10:06
Nope, not via Ajax. Yeah its only a demo system, so details ill send – frobak Jan 07 '16 at 10:08
can you please do a print_r($_POST); inside that function so that we can see the entire post values – krishnakumar kk Jan 07 '16 at 10:25
please make a print_r($this->input->post('user_assign')) – krishnakumar kk Jan 07 '16 at 10:34
please try print_r( $this->input->post()); – krishnakumar kk Jan 07 '16 at 10:45
@krishnakamur its empty/null/useless – frobak Jan 07 '16 at 10:47

score 1 · Answer 2 · answered Jan 07 '16 at 05:32

1

Try this

<input type="checkbox" name="user_assign[]" value="<?php echo $row['user_id'] ?>">

In Controller

$user_assign[] = $_POST('user_assign');
print_r($user_assign);

or

foreach ($_POST('user_assign') as $item) {
    echo $item;
}

answered Jan 07 '16 at 05:32

Abdulla Nilam

36,589
17
64
85

This give me the following error: Fatal error: Array callback has to contain indices 0 and 1 in /home/enets/public_html/system/application/controllers/assignments.php on line 80 – frobak Jan 07 '16 at 09:56
@frobak did you try foreach one?? – Abdulla Nilam Jan 07 '16 at 09:57
Yes, tried both, both give same error: Fatal error: Array callback has to contain indices 0 and 1 in /home/enets/public_html/system/application/controllers/assignments.php on line 68 – frobak Jan 07 '16 at 10:00
`var_dump($_POST('user_assign'))` and post answer – Abdulla Nilam Jan 07 '16 at 10:02
Fatal error: Array callback has to contain indices 0 and 1 in /home/enets/public_html/system/application/controllers/assignments.php on line 68 – frobak Jan 07 '16 at 10:04

Giri Annamalai M · Answer 3 · 2016-01-07T10:40:31.440

1

Also check form's action as action='controller/update_course_assignment_org'

function update_course_assignment_org() {

   $this->form_validation->set_rules('user_assign','Check now','required');

   if($this->form_validation->run()){
     $data = $user_assign = implode(',',$this->input->post('user_assign') );
     print_r($_POST);
     exit;
  }
    $this->load->model('courses_model');
    $this->load->model('assignment_model');

    // get course id from posted course name
    $course_name = $this->input->post('course_name');
    $course_object = $this->courses_model->get_course_id($course_name);
    $course_id = $course_object[0]->course_id;

    //$user_assign = substr(implode(', ', $this->input->post('user_assign')), 0);


    //foreach ($this->input->post('user_assign') as $key => $value) {
        $test_obj = array(
           'course' => $data,
           'users' => $course_id,
           'org' => $this->input->post('course_name')
        ); 
    //}     

    //$this->assignment_model->save_org_assignments($user_ids);

    $this->template->write('title', 'Assignments');
    $this->template->write('navigation_strip', $this->load->view('navigation', array(), TRUE));         
    $this->template->write('content', $this->load->view('/assignments/assign_test', $test_obj, TRUE));

    $this->template->render();      


}

Try this...!

edited Jan 07 '16 at 10:40

answered Jan 07 '16 at 08:22

Giri Annamalai M

810
9
24

Tried this as you can see from the commented code in my controller. Array/object still empty? – frobak Jan 07 '16 at 09:57
OK, i tried the above code, the output was: Array ( [user_assign] => Array ( [0] => 100002 [1] => 100003 ) [course_name] => Slips & Trips ) – frobak Jan 07 '16 at 10:45
I can echo/print the POST vars, i just cant get the array into the controller to use – frobak Jan 07 '16 at 10:46
Why cant i get the POST vars into the controller with $this->input->post('user_assign'). it just makes no sense whatsoever?????? – frobak Jan 07 '16 at 10:48
user_assign[] declared as array. So consider that first. – Giri Annamalai M Jan 07 '16 at 10:55
Sorry, what does that mean? – frobak Jan 07 '16 at 10:59
In view checkbox is declared as array. – Giri Annamalai M Jan 07 '16 at 11:01
Ok? I have the array from POST. Thats fine! How do i process that data if i cant get it into the controller? I've been stuck on this for 2 days, Ive tried probably 999 different things for this. I am close to the edge! – frobak Jan 07 '16 at 11:06
Post your view page, Just the form...! – Giri Annamalai M Jan 07 '16 at 11:07
1

Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/100038/discussion-between-blacmoon-and-frobak). – Giri Annamalai M Jan 07 '16 at 11:25

score 0 · Accepted Answer · answered Jan 07 '16 at 12:05

0

OK, so i managed to get it working via

$assignmen = @$_POST['user_assign'];

Don't ask me how or why?

Thanks everyone for your efforts in trying to solve this!

answered Jan 07 '16 at 12:05

frobak

557
2
11
30

Codeigniter multiple checkbox issue

4 Answers4