By RedRat on

First of all, excuse my English.

I'm trying to write a custom module which implements a new CCK field "Date Range". This module has two fields in DB, 'date1' and 'date2', and one textfield widget. Now I'm trying to understand in which hook I have to put code which will split text string from widget to two fields of DB (and vice versa). I have read all documentation for CCK and looked through all the examples in Internet, but can't get it. Mostly all documentation refers CCK 5.x, which has pretty different hooks and operations then 6.x one.

Please, give me a clue!

function date_range_field_settings($op, $field)
...
    case 'database columns':
      $columns['date1'] = array(
        'type' => 'datetime',
        'not null' => FALSE,
        'sortable' => TRUE,
        'views' => TRUE,
      );
      $columns['date2'] = $columns['date1'];

function date_range_widget(&$form, &$form_state, $field, $items, $delta = 0)
...
  $element['value'] = array(
    '#type' => 'textfield',
⋅ Categories: Drupal 6.x

Comments

danylevskyi’s picture

danylevskyi
Location Myrhorod / Ukraine
commented

Hello!

/**
 * Implementation of FAPI hook_elements().
 */
function example_elements() {
  return array(
    'example_widget' => array(
      '#process' => array('example_widget_process'),
      ...
    )
  );
}

/**
 * Process an individual element.
 */
function example_widget_process($element, $edit, $form_state, $form) {
  $field_key = $element['#columns'][0];
  $element[$field_key] = array(
    ...
  );
  $field_key = $element['#columns'][1];
  $element[$field_key] = array(
    ...
  );
  return $element;
}

Good luck!

RedRat’s picture

RedRat commented

I apologize for delay in response, but I spent last three days trying to get your code to work. Unfortunately, without any success. I checked my code a few dozens times, but can't get, why 'process' function doesn't executed at all?

This is a code from my module:

function date_range_widget_info() {
  return array(
    'date_range_widget' => array(
      'label' => t('Date range widget'),
      'field types' => array('date_range'),
      'multiple values' => CONTENT_HANDLE_CORE,
      'callbacks' => array(
        'default value' => CONTENT_CALLBACK_DEFAULT,
      ),
    ),
  );
}

function date_range_elements() {
  drupal_set_message('<pre>Elements function</pre>');
  return array(
    'date_range' => array(
      '#input' => TRUE,
      '#columns' => array('date1', 'date2'),
      '#process' => array('date_range_process'),
      '#element_validate' => array('date_range_element_validate'),
      '#submit' => array('date_range_submit'),
    ),
  );
}

function date_range_widget(&$form, &$form_state, $field, $items, $delta = 0) {
  $element = array(
    '#type' => 'textfield',
//    '#type' => $field['widget']['type'],
    '#default_value' => isset($items[$delta]) ? _range_to_string($items[$delta]['date1'], $items[$delta]['date2']) : '',
    '#attributes' => array('class' => 'text'),
  );
  drupal_set_message('<pre>Widget $element: ' . print_r($element, TRUE) . '</pre>');
  drupal_set_message('<pre>Widget $items: ' . print_r($items, TRUE) . '</pre>');
  return $element;
}

function date_range_submit($form, &$form_state) {
  drupal_set_message('<pre>Submit function</pre>');
}

function date_range_element_validate($element, &$form_state) {
  drupal_set_message('<pre>Element validate function</pre>');
}

function date_range_process($element, $edit, $form_state, $form) {
  drupal_set_message('<pre>Process $form: ' . print_r($form, TRUE) . '</pre>');
  drupal_set_message('<pre>Process $element: ' . print_r($element, TRUE) . '</pre>');
  $field = $form['#field_info'][$element['#field_name']];
  $field_key = $element['#columns'][0];
  $delta = $element['#delta'];
  $element[$field_key] = array(
    '#type' => 'textfield',
    '#default_value' => isset($items[$delta]['value']) ? $items[$delta]['value'] : '',
    '#autocomplete_path' => $element['#autocomplete_path'],
    ....
  );
  return $element;
}

No matter what I do, I see only messages from date_range_elements() and date_range_widget() functions, but not from date_range_process() or date_range_element_validate() ones. :-(((

I have done a "clean" install of Drupal 6.22 on empty DB to be sure that there is no any "glitches", but result is the same: my module doesn't call #process function at all, and I think my head is about to burst. Someone, tell me, what I doing wrong?!

RedRat’s picture

RedRat commented

Can someone give me a clue, what is wrong with code of my module?

RedRat’s picture

RedRat commented

So, nobody can help me? :-((