Make field editable in comment form

Question

Could you please help me with the following task? I need to make the existing field (name Clarify, type select - "clarification required/clarification isn't required") to be editable from display view (not on the Edit tab) and I need to place this field next to Comment field (see the screenshot).

I'm trying to use hook_alter_form in the following way, but with no luck. I know the below code is wrong and I need a little help to know which way to go.

function custom_form_alter(&$form, $form_state, $form_id) {
  if ($form_id == 'comment_node_support_ticket_form') {
    $form['field_clarify'] = array(
      '#type' => 'select',
      '#title' => 'Clarify',
    );

    $form['#validate'][] = 'custom_support_comment_submit';
  }
}

function custom_support_comment_submit($form, &$form_state) {
  $node = node_load($form_state['values']['nid']);
  $node_wrapper = entity_metadata_wrapper('node', $node);
  $node_wrapper->field_clarify->set($form_state['values']['field_clarify']);
  $node_wrapper->save();  
}

Answer 1

First, you need 'options' => array('clarification required', 'clarification isn\'t required') for select because you need options. Then you need to make sure your module name is custom (unless you don't want to expose your module name). Also, you pass your function name to $form['#validate'][] but it ends with _submit (it should be _validate).

There are what I found at the first glance. I didn't check the code.