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- <?php
- /**
- * @file
- * Date forms and form themes and validation.
- *
- * All code used in form editing and processing is in this file,
- * included only during form editing.
- */
- /**
- * Private implementation of hook_widget().
- *
- * The widget builds out a complex date element in the following way:
- *
- * - A field is pulled out of the database which is comprised of one or
- * more collections of start/end dates.
- *
- * - The dates in this field are all converted from the UTC values stored
- * in the database back to the local time. This is done in #process
- * to avoid making this change to dates that are not being processed,
- * like those hidden with #access.
- *
- * - If values are empty, the field settings rules are used to determine
- * if the default_values should be empty, now, the same, or use strtotime.
- *
- * - Each start/end combination is created using the date_combo element type
- * defined by the date module. If the timezone is date-specific, a
- * timezone selector is added to the first combo element.
- *
- * - The date combo element creates two individual date elements, one each
- * for the start and end field, using the appropriate individual Date API
- * date elements, like selects, textfields, or popups.
- *
- * - In the individual element validation, the data supplied by the user is
- * used to update the individual date values.
- *
- * - In the combo date validation, the timezone is updated, if necessary,
- * then the user input date values are used with that timezone to create
- * date objects, which are used update combo date timezone and offset values.
- *
- * - In the field's submission processing, the new date values, which are in
- * the local timezone, are converted back to their UTC values and stored.
- */
- function date_field_widget_form(&$form, &$form_state, $field, $instance, $langcode, $items, $delta, $base) {
- $element = $base;
- $field_name = $field['field_name'];
- $entity_type = $instance['entity_type'];
- // If this is a new entity, populate the field with the right default values.
- // This happens early so even fields later hidden with #access get those values.
- // We should only add default values to new entities, to avoid over-writing
- // a value that has already been set. This means we can't just check to see
- // if $items is empty, because it might have been set that way on purpose.
- // @see date_field_widget_properties_alter() where we flagged if this is a new entity.
- // We check !isset($items[$delta]['value']) because entity translation may create
- // a new translation entity for an existing entity and we don't want to clobber
- // values that were already set in that case.
- // @see http://drupal.org/node/1478848.
- $is_default = FALSE;
- if (!empty($instance['widget']['is_new']) && !isset($items[$delta]['value'])) {
- $items = date_default_value($field, $instance, $langcode);
- $is_default = TRUE;
- }
- // @TODO Repeating dates should probably be made into their own field type and completely separated out.
- // That will have to wait for a new branch since it may break other things, including other modules
- // that have an expectation of what the date field types are.
- // Since repeating dates cannot use the default Add more button, we have to handle our own behaviors here.
- // Return only the first multiple value for repeating dates, then clean up the 'Add more' bits in #after_build.
- // The repeating values will be re-generated when the repeat widget form is validated.
- // At this point we can't tell if this form element is going to be hidden by #access, and we're going to
- // lose all but the first value by doing this, so store the original values in case we need to replace them later.
- if (!empty($field['settings']['repeat'])) {
- if ($delta == 0) {
- $form['#after_build'][] = 'date_repeat_after_build';
- $form_state['storage']['repeat_fields'][$field_name] = array_merge($form['#parents'], array($field_name));
- $form_state['storage']['date_items'][$field_name][$langcode] = $items;
- }
- else {
- return;
- }
- }
- module_load_include('inc', 'date_api', 'date_api_elements');
- $timezone = date_get_timezone($field['settings']['tz_handling'], isset($items[$delta]['timezone']) ? $items[$delta]['timezone'] : date_default_timezone());
- // TODO see if there's a way to keep the timezone element from ever being
- // nested as array('timezone' => 'timezone' => value)). After struggling
- // with this a while, I can find no way to get it displayed in the form
- // correctly and get it to use the timezone element without ending up
- // with nesting.
- if (is_array($timezone)) {
- $timezone = $timezone['timezone'];
- }
- $element += array(
- '#type' => 'date_combo',
- '#theme_wrappers' => array('date_combo'),
- '#weight' => $delta,
- '#default_value' => isset($items[$delta]) ? $items[$delta] : '',
- '#date_timezone' => $timezone,
- '#element_validate' => array('date_combo_validate'),
- '#date_is_default' => $is_default,
- // Store the original values, for use with disabled and hidden fields.
- '#date_items' => isset($items[$delta]) ? $items[$delta] : '',
- );
- $element['#title'] = $instance['label'];
- if ($field['settings']['tz_handling'] == 'date') {
- $element['timezone'] = array(
- '#type' => 'date_timezone',
- '#theme_wrappers' => array('date_timezone'),
- '#delta' => $delta,
- '#default_value' => $timezone,
- '#weight' => $instance['widget']['weight'] + 1,
- '#attributes' => array('class' => array('date-no-float')),
- '#date_label_position' => $instance['widget']['settings']['label_position'],
- );
- }
- // Make changes if instance is set to be rendered as a regular field.
- if (!empty($instance['widget']['settings']['no_fieldset'])) {
- $element['#title'] = check_plain($instance['label']);
- $element['#theme_wrappers'] = ($field['cardinality'] == 1) ? array('date_form_element') : array();
- }
- return $element;
- }
- /**
- * Create local date object.
- *
- * Create a date object set to local time from the field and
- * widget settings and item values. Default values for new entities
- * are set by the default value callback, so don't need to be accounted for here.
- */
- function date_local_date($item, $timezone, $field, $instance, $part = 'value') {
- $value = $item[$part];
- // If the value is empty, don't try to create a date object because it will
- // end up being the current day.
- if (empty($value)) {
- return NULL;
- }
- // @TODO Figure out how to replace date_fuzzy_datetime() function.
- // Special case for ISO dates to create a valid date object for formatting.
- // Is this still needed?
- // @codingStandardsIgnoreStart
- /*
- if ($field['type'] == DATE_ISO) {
- $value = date_fuzzy_datetime($value);
- }
- else {
- $db_timezone = date_get_timezone_db($field['settings']['tz_handling']);
- $value = date_convert($value, $field['type'], DATE_DATETIME, $db_timezone);
- }
- */
- // @codingStandardsIgnoreEnd
- $date = new DateObject($value, date_get_timezone_db($field['settings']['tz_handling']));
- $date->limitGranularity($field['settings']['granularity']);
- if (empty($date)) {
- return NULL;
- }
- date_timezone_set($date, timezone_open($timezone));
- return $date;
- }
- /**
- * The callback for setting a default value for an empty date field.
- */
- function date_default_value($field, $instance, $langcode) {
- $item = array();
- $db_format = date_type_format($field['type']);
- $date = date_default_value_part($item, $field, $instance, $langcode, 'value');
- $item[0]['value'] = is_object($date) ? date_format($date, $db_format) : '';
- if (!empty($field['settings']['todate'])) {
- $date = date_default_value_part($item, $field, $instance, $langcode, 'value2');
- $item[0]['value2'] = is_object($date) ? date_format($date, $db_format) : '';
- }
- // Make sure the default value has the same construct as a loaded field value
- // to avoid errors if the default value is used on a hidden element.
- $item[0]['timezone'] = date_get_timezone($field['settings']['tz_handling']);
- $item[0]['timezone_db'] = date_get_timezone_db($field['settings']['tz_handling']);
- $item[0]['date_type'] = $field['type'];
- if (!isset($item[0]['value2'])) {
- $item[0]['value2'] = $item[0]['value'];
- }
- return $item;
- }
- /**
- * Helper function for the date default value callback to set either 'value' or 'value2' to its default value.
- */
- function date_default_value_part($item, $field, $instance, $langcode, $part = 'value') {
- $timezone = date_get_timezone($field['settings']['tz_handling']);
- $timezone_db = date_get_timezone_db($field['settings']['tz_handling']);
- $date = NULL;
- if ($part == 'value') {
- $default_value = $instance['settings']['default_value'];
- $default_value_code = $instance['settings']['default_value_code'];
- }
- else {
- $default_value = $instance['settings']['default_value2'];
- $default_value_code = $instance['settings']['default_value_code2'];
- }
- if (empty($default_value) || $default_value == 'blank') {
- return NULL;
- }
- elseif ($default_value == 'strtotime' && !empty($default_value_code)) {
- $date = new DateObject($default_value_code, date_default_timezone());
- }
- elseif ($part == 'value2' && $default_value == 'same') {
- if ($instance['settings']['default_value'] == 'blank' || empty($item[0]['value'])) {
- return NULL;
- }
- else {
- // The date stored in 'value' has already been switched to the db timezone.
- $date = new DateObject($item[0]['value'], $timezone_db, DATE_FORMAT_DATETIME);
- }
- }
- // Special case for 'now' when using dates with no timezone,
- // make sure 'now' isn't adjusted to UTC value of 'now' .
- elseif ($field['settings']['tz_handling'] == 'none') {
- $date = date_now();
- }
- else {
- $date = date_now($timezone);
- }
- // The default value needs to be in the database timezone.
- date_timezone_set($date, timezone_open($timezone_db));
- $date->limitGranularity($field['settings']['granularity']);
- return $date;
- }
- /**
- * Process an individual date element.
- */
- function date_combo_element_process($element, &$form_state, $form) {
- if (date_hidden_element($element)) {
- // A hidden value for a new entity that had its end date set to blank
- // will not get processed later to populate the end date, so set it here.
- if (isset($element['#value']['value2']) && empty($element['#value']['value2'])) {
- $element['#value']['value2'] = $element['#value']['value'];
- }
- return $element;
- }
- $field_name = $element['#field_name'];
- $delta = $element['#delta'];
- $bundle = $element['#bundle'];
- $entity_type = $element['#entity_type'];
- $langcode = $element['#language'];
- $date_is_default = $element['#date_is_default'];
- $field = field_widget_field($element, $form_state);
- $instance = field_widget_instance($element, $form_state);
- // Figure out how many items are in the form, including new ones added by ajax.
- $field_state = field_form_get_state($element['#field_parents'], $field_name, $element['#language'], $form_state);
- $items_count = $field_state['items_count'];
- $columns = $element['#columns'];
- if (isset($columns['rrule'])) {
- unset($columns['rrule']);
- }
- $from_field = 'value';
- $to_field = 'value2';
- $tz_field = 'timezone';
- $offset_field = 'offset';
- $offset_field2 = 'offset2';
- // Convert UTC dates to their local values in DATETIME format,
- // and adjust the default values as specified in the field settings.
- // It would seem to make sense to do this conversion when the data
- // is loaded instead of when the form is created, but the loaded
- // field data is cached and we can't cache dates that have been converted
- // to the timezone of an individual user, so we cache the UTC values
- // instead and do our conversion to local dates in the form and
- // in the formatters.
- $process = date_process_values($field, $instance);
- foreach ($process as $processed) {
- if (!isset($element['#default_value'][$processed])) {
- $element['#default_value'][$processed] = '';
- }
- $date = date_local_date($element['#default_value'], $element['#date_timezone'], $field, $instance, $processed);
- $element['#default_value'][$processed] = is_object($date) ? date_format($date, DATE_FORMAT_DATETIME) : '';
- }
- // Blank out the end date for optional end dates that match the start date,
- // except when this is a new node that has default values that should be honored.
- if (!$date_is_default && $field['settings']['todate'] != 'required'
- && is_array($element['#default_value'])
- && !empty($element['#default_value'][$to_field])
- && $element['#default_value'][$to_field] == $element['#default_value'][$from_field]) {
- unset($element['#default_value'][$to_field]);
- }
- $show_todate = !empty($form_state['values']['show_todate']) || !empty($element['#default_value'][$to_field]) || $field['settings']['todate'] == 'required';
- $element['show_todate'] = array(
- '#title' => t('Show End Date'),
- '#type' => 'checkbox',
- '#default_value' => $show_todate,
- '#weight' => -20,
- '#access' => $field['settings']['todate'] == 'optional',
- '#prefix' => '<div class="date-float">',
- '#suffix' => '</div>',
- );
- $parents = $element['#parents'];
- $first_parent = array_shift($parents);
- $show_id = $first_parent . '[' . implode('][', $parents) . '][show_todate]';
- $element[$from_field] = array(
- '#field' => $field,
- '#instance' => $instance,
- '#weight' => $instance['widget']['weight'],
- '#required' => ($element['#required'] && $delta == 0) ? 1 : 0,
- '#default_value' => isset($element['#default_value'][$from_field]) ? $element['#default_value'][$from_field] : '',
- '#delta' => $delta,
- '#date_timezone' => $element['#date_timezone'],
- '#date_format' => date_limit_format(date_input_format($element, $field, $instance), $field['settings']['granularity']),
- '#date_text_parts' => (array) $instance['widget']['settings']['text_parts'],
- '#date_increment' => $instance['widget']['settings']['increment'],
- '#date_year_range' => $instance['widget']['settings']['year_range'],
- '#date_label_position' => $instance['widget']['settings']['label_position'],
- );
- $description = !empty($element['#description']) ? t($element['#description']) : '';
- unset($element['#description']);
- // Give this element the right type, using a Date API
- // or a Date Popup element type.
- $element[$from_field]['#attributes'] = array('class' => array('date-clear'));
- $element[$from_field]['#wrapper_attributes'] = array('class' => array());
- $element[$from_field]['#wrapper_attributes']['class'][] = 'date-no-float';
- switch ($instance['widget']['type']) {
- case 'date_select':
- $element[$from_field]['#type'] = 'date_select';
- $element[$from_field]['#theme_wrappers'] = array('date_select');
- $element['#attached']['js'][] = drupal_get_path('module', 'date') . '/date.js';
- $element[$from_field]['#ajax'] = !empty($element['#ajax']) ? $element['#ajax'] : FALSE;
- break;
- case 'date_popup':
- $element[$from_field]['#type'] = 'date_popup';
- $element[$from_field]['#theme_wrappers'] = array('date_popup');
- $element[$from_field]['#ajax'] = !empty($element['#ajax']) ? $element['#ajax'] : FALSE;
- break;
- default:
- $element[$from_field]['#type'] = 'date_text';
- $element[$from_field]['#theme_wrappers'] = array('date_text');
- $element[$from_field]['#ajax'] = !empty($element['#ajax']) ? $element['#ajax'] : FALSE;
- break;
- }
- // If this field uses the 'End', add matching element
- // for the 'End' date, and adapt titles to make it clear which
- // is the 'Start' and which is the 'End' .
- if (!empty($field['settings']['todate'])) {
- $element[$to_field] = $element[$from_field];
- $element[$from_field]['#title_display'] = 'none';
- $element[$to_field]['#title'] = t('to:');
- $element[$from_field]['#wrapper_attributes']['class'][] = 'start-date-wrapper';
- $element[$to_field]['#wrapper_attributes']['class'][] = 'end-date-wrapper';
- $element[$to_field]['#default_value'] = isset($element['#default_value'][$to_field]) ? $element['#default_value'][$to_field] : '';
- $element[$to_field]['#required'] = ($element[$from_field]['#required'] && $field['settings']['todate'] == 'required');
- $element[$to_field]['#weight'] += .2;
- $element[$to_field]['#prefix'] = '';
- // Users with JS enabled will never see initially blank values for the end
- // date (see Drupal.date.EndDateHandler()), so hide the message for them.
- $description .= '<span class="js-hide"> ' . t("Empty 'End date' values will use the 'Start date' values.") . '</span>';
- $element['#fieldset_description'] = $description;
- if ($field['settings']['todate'] == 'optional') {
- $element[$to_field]['#states'] = array(
- 'visible' => array(
- 'input[name="' . $show_id . '"]' => array(
- 'checked' => TRUE,
- ),
- ),
- );
- }
- }
- else {
- $element[$from_field]['#description'] = $description;
- }
- // Create label for error messages that make sense in multiple values
- // and when the title field is left blank.
- if ($field['cardinality'] <> 1 && empty($field['settings']['repeat'])) {
- $element[$from_field]['#date_title'] = t('@field_name Start date value #@delta', array('@field_name' => $instance['label'], '@delta' => $delta + 1));
- if (!empty($field['settings']['todate'])) {
- $element[$to_field]['#date_title'] = t('@field_name End date value #@delta', array('@field_name' => $instance['label'], '@delta' => $delta + 1));
- }
- }
- elseif (!empty($field['settings']['todate'])) {
- $element[$from_field]['#date_title'] = t('@field_name Start date', array('@field_name' => $instance['label']));
- $element[$to_field]['#date_title'] = t('@field_name End date', array('@field_name' => $instance['label']));
- }
- else {
- $element[$from_field]['#date_title'] = t('@field_name', array('@field_name' => $instance['label']));
- }
- // Make changes if instance is set to be rendered as a regular field.
- if (!empty($instance['widget']['settings']['no_fieldset'])) {
- unset($element[$from_field]['#description']);
- if (!empty($field['settings']['todate']) && isset($element['#description'])) {
- $element['#description'] .= '<span class="js-hide"> ' . t("Empty 'End date' values will use the 'Start date' values.") . '</span>';
- }
- }
- $context = array(
- 'field' => $field,
- 'instance' => $instance,
- 'form' => $form,
- );
- drupal_alter('date_combo_process', $element, $form_state, $context);
- return $element;
- }
- /**
- * Empty a date element.
- */
- function date_element_empty($element, &$form_state) {
- $item = array();
- $item['value'] = NULL;
- $item['value2'] = NULL;
- $item['timezone'] = NULL;
- $item['offset'] = NULL;
- $item['offset2'] = NULL;
- $item['rrule'] = NULL;
- form_set_value($element, $item, $form_state);
- return $item;
- }
- /**
- * Validate and update a combo element.
- *
- * Don't try this if there were errors before reaching this point.
- */
- function date_combo_validate($element, &$form_state) {
- // Disabled and hidden elements won't have any input and don't need validation,
- // we just need to re-save the original values, from before they were processed into
- // widget arrays and timezone-adjusted.
- if (date_hidden_element($element) || !empty($element['#disabled'])) {
- form_set_value($element, $element['#date_items'], $form_state);
- return;
- }
- $field_name = $element['#field_name'];
- $delta = $element['#delta'];
- $langcode = $element['#language'];
- // Related issue: https://drupal.org/node/2279831.
- if (!is_array($element['#field_parents'])) {
- $element['#field_parents'] = array();
- }
- $form_values = drupal_array_get_nested_value($form_state['values'], $element['#field_parents']);
- $form_input = drupal_array_get_nested_value($form_state['input'], $element['#field_parents']);
- // If the whole field is empty and that's OK, stop now.
- if (empty($form_input[$field_name]) && !$element['#required']) {
- return;
- }
- $item = drupal_array_get_nested_value($form_state['values'], $element['#parents']);
- $posted = drupal_array_get_nested_value($form_state['input'], $element['#parents']);
- $field = field_widget_field($element, $form_state);
- $instance = field_widget_instance($element, $form_state);
- $context = array(
- 'field' => $field,
- 'instance' => $instance,
- 'item' => $item,
- );
- drupal_alter('date_combo_pre_validate', $element, $form_state, $context);
- $from_field = 'value';
- $to_field = 'value2';
- $tz_field = 'timezone';
- $offset_field = 'offset';
- $offset_field2 = 'offset2';
- // Check for empty 'Start date', which could either be an empty
- // value or an array of empty values, depending on the widget.
- $empty = TRUE;
- if (!empty($item[$from_field])) {
- if (!is_array($item[$from_field])) {
- $empty = FALSE;
- }
- else {
- foreach ($item[$from_field] as $key => $value) {
- if (!empty($value)) {
- $empty = FALSE;
- break;
- }
- }
- }
- }
- // An 'End' date without a 'Start' date is a validation error.
- if ($empty && !empty($item[$to_field])) {
- if (!is_array($item[$to_field])) {
- form_error($element, t("A 'Start date' date is required if an 'end date' is supplied for field %field #%delta.", array('%delta' => $field['cardinality'] ? intval($delta + 1) : '', '%field' => $instance['label'])));
- $empty = FALSE;
- }
- else {
- foreach ($item[$to_field] as $key => $value) {
- if (!empty($value)) {
- form_error($element, t("A 'Start date' date is required if an 'End date' is supplied for field %field #%delta.", array('%delta' => $field['cardinality'] ? intval($delta + 1) : '', '%field' => $instance['label'])));
- $empty = FALSE;
- break;
- }
- }
- }
- }
- // If the user chose the option to not show the end date, just swap in the
- // start date as that value so the start and end dates are the same.
- if ($field['settings']['todate'] == 'optional' && empty($item['show_todate'])) {
- $item[$to_field] = $item[$from_field];
- $posted[$to_field] = $posted[$from_field];
- }
- if ($empty) {
- $item = date_element_empty($element, $form_state);
- if (!$element['#required']) {
- return;
- }
- }
- // Don't look for further errors if errors are already flagged
- // because otherwise we'll show errors on the nested elements
- // more than once.
- elseif (!form_get_errors()) {
- $timezone = !empty($item[$tz_field]) ? $item[$tz_field] : $element['#date_timezone'];
- $timezone_db = date_get_timezone_db($field['settings']['tz_handling']);
- $element[$from_field]['#date_timezone'] = $timezone;
- $from_date = date_input_date($field, $instance, $element[$from_field], $posted[$from_field]);
- if (!empty($field['settings']['todate'])) {
- $element[$to_field]['#date_timezone'] = $timezone;
- $to_date = date_input_date($field, $instance, $element[$to_field], $posted[$to_field]);
- }
- else {
- $to_date = $from_date;
- }
- // Neither the start date nor the end date should be empty at this point
- // unless they held values that couldn't be evaluated.
- if (!$instance['required'] && (!date_is_date($from_date) || !date_is_date($to_date))) {
- $item = date_element_empty($element, $form_state);
- $errors[] = t('The dates are invalid.');
- }
- elseif (!empty($field['settings']['todate']) && $from_date > $to_date) {
- form_set_value($element[$to_field], $to_date, $form_state);
- $errors[] = t('The End date must be greater than the Start date.');
- }
- else {
- // Convert input dates back to their UTC values and re-format to ISO
- // or UNIX instead of the DATETIME format used in element processing.
- $item[$tz_field] = $timezone;
- // Update the context for changes in the $item, and allow other modules to
- // alter the computed local dates.
- $context['item'] = $item;
- // We can only pass two additional values to drupal_alter, so $element
- // needs to be included in $context.
- $context['element'] = $element;
- drupal_alter('date_combo_validate_date_start', $from_date, $form_state, $context);
- drupal_alter('date_combo_validate_date_end', $to_date, $form_state, $context);
- $item[$offset_field] = date_offset_get($from_date);
- $test_from = date_format($from_date, 'r');
- $test_to = date_format($to_date, 'r');
- $item[$offset_field2] = date_offset_get($to_date);
- date_timezone_set($from_date, timezone_open($timezone_db));
- date_timezone_set($to_date, timezone_open($timezone_db));
- $item[$from_field] = date_format($from_date, date_type_format($field['type']));
- $item[$to_field] = date_format($to_date, date_type_format($field['type']));
- if (isset($form_values[$field_name]['rrule'])) {
- $item['rrule'] = $form_values[$field['field_name']]['rrule'];
- }
- // If the db timezone is not the same as the display timezone
- // and we are using a date with time granularity,
- // test a roundtrip back to the original timezone to catch
- // invalid dates, like 2AM on the day that spring daylight savings
- // time begins in the US.
- $granularity = date_format_order($element[$from_field]['#date_format']);
- if ($timezone != $timezone_db && date_has_time($granularity)) {
- date_timezone_set($from_date, timezone_open($timezone));
- date_timezone_set($to_date, timezone_open($timezone));
- if ($test_from != date_format($from_date, 'r')) {
- $errors[] = t('The Start date is invalid.');
- }
- if ($test_to != date_format($to_date, 'r')) {
- $errors[] = t('The End date is invalid.');
- }
- }
- if (empty($errors)) {
- form_set_value($element, $item, $form_state);
- }
- }
- }
- if (!empty($errors)) {
- if ($field['cardinality']) {
- form_error($element, t('There are errors in @field_name value #@delta:', array('@field_name' => $instance['label'], '@delta' => $delta + 1)) . theme('item_list', array('items' => $errors)));
- }
- else {
- form_error($element, t('There are errors in @field_name:', array('@field_name' => $instance['label'])) . theme('item_list', array('items' => $errors)));
- }
- }
- }
- /**
- * Determine the input format for this element.
- */
- function date_input_format($element, $field, $instance) {
- if (!empty($instance['widget']['settings']['input_format_custom'])) {
- return $instance['widget']['settings']['input_format_custom'];
- }
- elseif (!empty($instance['widget']['settings']['input_format']) && $instance['widget']['settings']['input_format'] != 'site-wide') {
- return $instance['widget']['settings']['input_format'];
- }
- return variable_get('date_format_short', 'm/d/Y - H:i');
- }
- /**
- * Implements hook_date_select_pre_validate_alter().
- */
- function date_date_select_pre_validate_alter(&$element, &$form_state, &$input) {
- date_empty_end_date($element, $form_state, $input);
- }
- /**
- * Implements hook_date_text_pre_validate_alter().
- */
- function date_date_text_pre_validate_alter(&$element, &$form_state, &$input) {
- date_empty_end_date($element, $form_state, $input);
- }
- /**
- * Implements hook_date_popup_pre_validate_alter().
- */
- function date_date_popup_pre_validate_alter(&$element, &$form_state, &$input) {
- date_empty_end_date($element, $form_state, $input);
- }
- /**
- * Helper function to clear out end date when not being used.
- */
- function date_empty_end_date(&$element, &$form_state, &$input) {
- // If this is the end date and the option to show an end date has not been selected,
- // empty the end date to surpress validation errors and stop further processing.
- $parents = $element['#parents'];
- $parent = array_pop($parents);
- if ($parent == 'value2') {
- $parent_values = drupal_array_get_nested_value($form_state['values'], $parents);
- if (isset($parent_values['show_todate']) && $parent_values['show_todate'] != 1) {
- $input = array();
- form_set_value($element, NULL, $form_state);
- }
- }
- }
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