How to add multiple Link-field entries programmatically using drupal_form_submit?

I hope you sorted this out, just replying as this was the first result on google when I got stuck.

You can't use drupal_form_submit directly, you have to copy the code from inside drupal_form_submit and then manipulate the form_state before processing. Remembering to set $form_id and $form_state['build_info']['args'] manually, you need:

  if (!isset($form_state['build_info']['args'])) {
    $form_state['build_info']['args'] = array($node);
  }
  // Merge in default values.
  $form_state += form_state_defaults();

  // Populate $form_state['input'] with the submitted values before retrieving
  // the form, to be consistent with what drupal_build_form() does for
  // non-programmatic submissions (form builder functions may expect it to be
  // there).
  $form_state['input'] = $form_state['values'];

  $form_state['programmed'] = TRUE;
  $form = drupal_retrieve_form($form_id, $form_state);
  // Programmed forms are always submitted.

Then the following, taken from field_add_more_submit:

  // Go one level up in the form, to the widgets container.
  $element = drupal_array_get_nested_value($form, array('YOUR_FIELD_NAME','und'));
  $field_name = $element['#field_name'];
  $langcode = $element['#language'];
  $parents = $element['#field_parents'];

  // Increment the items count.
  $field_state = field_form_get_state($parents, $field_name, $langcode, $form_state);
  $field_state['items_count'] = DESIRED_NUMBER_OF_FIELDS;
  field_form_set_state($parents, $field_name, $langcode, $form_state, $field_state);

  $form = drupal_rebuild_form($form_id, $form_state, $form);

Then the rest of the drupal_form_submit code.

  // Reset form validation.
  $form_state['submitted'] = TRUE;
  $form_state['must_validate'] = TRUE;
  form_clear_error();

  drupal_prepare_form($form_id, $form, $form_state);
  drupal_process_form($form_id, $form, $form_state);

Hope this helps.

Steve

Maybe this code can help someone

function generate_multiform_link(&$form, &$form_state) {
  $link_form_name = $form['delta']['#value'];
  $links = variable_get($link_form_name,  NULL);

  $form['settings']['links_fieldset'] = array(
    '#type' => 'fieldset',
    '#title' => t('Liste des liens'),
    '#prefix' => '<div id="links_form">',
    '#suffix' => '</div>',
    '#tree' => TRUE,
  );
  
  // Build the number of link_field form indicated by $form_state['num_links']
  if (empty($form_state['num_links'])) {
    $form_state['num_links'] = count($links) > 1 ? count($links) : 1;
  }
  for ($i = 0; $i < $form_state['num_links']; $i++) {    
    $form['settings']['links_fieldset'][$link_form_name][$i] = array(
      '#type' => 'link_field',
      '#delta' => 0,
      '#default_value' => isset($links[$i]) ? $links[$i] : NULL,
      '#field_parents' => NULL,
      '#field_name' => '',
      '#language' => '',
    );
  }

  $form['settings']['links_fieldset']['add_more'] = array(
    '#type' => 'submit',
    '#value' => t('Add another item'), 
    '#submit' => array('generate_add_more'),
    '#ajax' => array(
      'callback' => 'generate_callback',
      'wrapper' => 'links_form',
    ),
  );
  if ($form_state['num_links'] > 1) {
    $form['settings']['links_fieldset']['remove_item'] = array(
      '#type' => 'submit',
      '#value' => t('Retirer le dernier élément'),
      '#submit' => array('generate_remove_item'),
      '#ajax' => array(
        'callback' => 'generate_callback',
        'wrapper' => 'links_form',
      ),
    );
  }
  
  $form['#submit'][] = 'generate_block_submit';
}

/**
 * Callback for ajax-enabled buttons
 *
 * Appel ajax de l'ajout et suppression des liens 
 */
function generate_callback($form, $form_state) {
  return $form['settings']['links_fieldset'];
}

/**
 * Submit handler for the "add_more" button.
 *
 * Ajoute un lien
 */
function generate_add_more($form, &$form_state) {
  $form_state['num_links']++;
  $form_state['rebuild'] = TRUE;
}

/**
 * Submit handler for the "remove_item" button.
 *
 * Supprime un lien
 */
function generate_remove_item($form, &$form_state) {
  if ($form_state['num_links'] > 1) {
    $form_state['num_links']--;
  }
  $form_state['rebuild'] = TRUE;
}

/**
 * Implements hook_block_save().
 *
 * Sauvegarde des liens configuré au sein du bloc "Liens pratiques"
 */
function generate_block_submit(&$form, &$form_state) {
  $link_form_name = $form['delta']['#value'];
  $edit = $form_state['values'];
  if (isset($edit['links_fieldset'][$link_form_name]) && is_array($edit['links_fieldset'][$link_form_name])) {
    foreach($edit['links_fieldset'][$link_form_name] as $links) {
      $array[] = array('title' => $links['title'], 'url' => $links['url']);
    }
    variable_set($link_form_name, $array);    
  }
}