function webform_validate_date in Webform 7.4

Same name and namespace in other branches

1. 5.2 components/date.inc \webform_validate_date()
2. 5 components/date.inc \webform_validate_date()
3. 6.3 components/date.inc \webform_validate_date()
4. 6.2 components/date.inc \webform_validate_date()
5. 7.3 components/date.inc \webform_validate_date()

Element validation for Webform date fields.

1 string reference to 'webform_validate_date'

_webform_render_date in components/date.inc

Implements _webform_render_component().

File

components/date.inc, line 409

Webform module date component.

Code

function webform_validate_date($element, $form_state) {
  $date_parts = array(
    'day',
    'month',
    'year',
  );

  // Determine if the user has specified a date. Hidden parts of the date will
  // be submitted automatically.
  foreach ($date_parts as $date_part) {
    if (!in_array($date_part, $element['#exclude']) && $element[$date_part]['#value'] !== '') {
      $field_found = TRUE;
    }
  }
  if (isset($field_found)) {

    // Check that each part of the date has been filled in.
    foreach ($date_parts as $date_part) {
      if (empty($element[$date_part]['#value'])) {
        form_error($element[$date_part], t('!part in !name is missing.', array(
          '!name' => $element['#title'],
          '!part' => $element[$date_part]['#title'],
        )));
        $missing_fields = TRUE;
      }
    }
    if (isset($missing_fields)) {
      return;
    }

    // Ensure date is made up of integers.
    foreach ($date_parts as $date_part) {
      $element[$date_part]['#value'] = (int) $element[$date_part]['#value'];
    }

    // Check for a valid date.
    if (!checkdate($element['month']['#value'], $element['day']['#value'], $element['year']['#value'])) {
      form_error($element, t('Entered !name is not a valid date.', array(
        '!name' => $element['#title'],
      )));
      return;
    }

    // Create a timestamp of the entered value for comparison.
    $timestamp = strtotime($element['year']['#value'] . '-' . $element['month']['#value'] . '-' . $element['day']['#value']);
    $format = webform_date_format('short');

    // Flip start and end if needed. Prior to 7.x-4.8, it was possible to save
    // a date component with the end date earlier than the start date.
    $date1 = strtotime($element['#start_date']);
    $date2 = strtotime($element['#end_date']);
    if ($date1 !== FALSE && $date2 !== FALSE) {
      $start_date = $date1 < $date2 ? $date1 : $date2;
      $end_date = $date1 > $date2 ? $date1 : $date2;
    }
    else {
      $start_date = $date1;
      $end_date = $date2;
    }

    // Check that the date is after the start date.
    if ($start_date !== FALSE && $timestamp < $start_date) {
      form_error($element, t('The entered date must be @start_date or later.', array(
        '@start_date' => date($format, $start_date),
      )));
    }

    // Check that the date is before the end date.
    if ($end_date !== FALSE && $timestamp > $end_date) {
      form_error($element, t('The entered date must be @end_date or earlier.', array(
        '@end_date' => date($format, $end_date),
      )));
    }
  }
  elseif ($element['#required']) {
    form_error($element, t('!name field is required.', array(
      '!name' => $element['#title'],
    )));
  }
}