Custom submission handler doesn't save the node

Question

I have two form submission buttons: the normal one and one added via hook_form_alter.

I'm currently using the normal default one as a save button which updates the node content as normal.

The second one which is called submit does the same thing, but will be changing a checkbox via $form_state prior to saving the node content.

The code I'm using is the following one:

function MYMODULE_form_alter(&$form, &$form_state, $form_id) {

  if ($form_id == 'example_node_form') {

    //dpm($form);
    $form['actions']['finishbutton'] = [
      '#type'   => 'submit',
      '#value'  => t('Submit'),
      '#submit' => array_merge($form['actions']['submit']['#submit'], ['custom_submit']),
      '#weight' => 99,
    ];
  }
}

function custom_submit($form, &$form_state) {

  drupal_set_message(t('This works, but shows up after the node submit message'));

  // Shows after the node save message.
  dpm($form_state);

  // Doesn't update.
  $form_state['values']['field_nomination_submitted'][LANGUAGE_NONE][0]['value'] = 1;
}

My submission works, but the custom handler appears to be firing after the standard submission handler. Do I need to switch the array_merge order? Do I need to break this into separate functions? Do I potentially need to add a submit function inside of custom_submit?

Answer 1

Use [] syntax instead of Array() and switch the order ... that should work.

Credits: Shawn Matthews.