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In the following code custom call back function is being printed twice. How to prevent submit call back function being called twice.

function my_module_form_alter(&$form, &$form_state, $form_id){
 if ($form['#id'] == "views-exposed-form-test-page"){
    $form['#submit'][] = 'custom_callback';
  }
}

function custom_callback($form,&$form_state){
    $form_state['redirect'] = false;
    dpm("insert record");
}
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  • is hook_form_alter() firing twice resulting in the custom callback firing twice? Or is the hook_form_alter() being fired once, and the custom function is firing twice?
    – DMAC
    Nov 7 '16 at 17:42
  • hook_form_alter is firing twice . if i dpm("test") inside hook form it display twice. Nov 7 '16 at 18:02
  • Can you run dpm($form_id); inside your hook_form_alter(&$form, $form_id), do you get different form ID's?
    – DMAC
    Nov 7 '16 at 18:09
  • its giving me same form_id Nov 7 '16 at 18:37
  • Is your form being outputted more than once on the page you are on? How are you rendering the form?
    – DMAC
    Nov 7 '16 at 18:42
1

hook_form_alter() will fire once for every time there is a form on the current page.

You can try the hook hook_form_FORM_ID_alter(). This will only run once when the form with the specific ID pops up.

Unfortunately I had this issue happen before, the hook_form_alter() ran multiple times. I stopped the code from running multiple times by encapsulating the code inside an IF statement inside the hook_form_alter() example: if($form_id == my_id). So the hook ran multiple times but the code only ran once.

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