How to use form_set_value for a select list field?

Question

Drupal 7. in my validate form function, I use form_set_value to set the value for the field "statut_metier" to 'draft'

If my field is a text field, this code works :

form_set_value($form['field_statut_metier'][LANGUAGE_NONE][0]['value'], 'draft', $form_state);

If my field is a list(text) field, with the key for the value 'draft' = 5

I can't manage to have the form_set_value function work.

Using Devel and dpm() I have search to reach this field value :

I have tried :

form_set_value($form['field_statut_metier2'][LANGUAGE_NONE]['#value'][0], '5' , $form_state);

but it doesn't work.

Any idea ?

Answer 1

<?php form_set_value($form['field_statut_metier2'][LANGUAGE_NONE], array(0 => array('value' => 2)), $form_state); ?>

From the form_set_value() documentation on the first argument:

you can just pass in the element from the $form array, although the only component that is actually used is '#parents'

Alternatively you can do:

<?php $form_state['values']['field_statut_metier2'][LANGUAGE_NONE][0]['value'] = '2'; ?>

... which is what form_set_value() does anyways.