3 namespace Drupal\Core\Datetime\Element;
5 use Drupal\Component\Utility\NestedArray;
6 use Drupal\Core\Datetime\DrupalDateTime;
7 use Drupal\Core\Form\FormStateInterface;
8 use Drupal\Core\Datetime\Entity\DateFormat;
11 * Provides a datetime element.
13 * @FormElement("datetime")
15 class Datetime extends DateElementBase {
18 * @var \DateTimeInterface
20 protected static $dateExample;
25 public function getInfo() {
28 // Date formats cannot be loaded during install or update.
29 if (!defined('MAINTENANCE_MODE')) {
30 if ($date_format_entity = DateFormat::load('html_date')) {
31 /** @var $date_format_entity \Drupal\Core\Datetime\DateFormatInterface */
32 $date_format = $date_format_entity->getPattern();
34 if ($time_format_entity = DateFormat::load('html_time')) {
35 /** @var $time_format_entity \Drupal\Core\Datetime\DateFormatInterface */
36 $time_format = $time_format_entity->getPattern();
40 $class = get_class($this);
43 '#element_validate' => [
44 [$class, 'validateDatetime'],
47 [$class, 'processDatetime'],
48 [$class, 'processGroup'],
51 [$class, 'preRenderGroup'],
53 '#theme' => 'datetime_form',
54 '#theme_wrappers' => ['datetime_wrapper'],
55 '#date_date_format' => $date_format,
56 '#date_date_element' => 'date',
57 '#date_date_callbacks' => [],
58 '#date_time_format' => $time_format,
59 '#date_time_element' => 'time',
60 '#date_time_callbacks' => [],
61 '#date_year_range' => '1900:2050',
62 '#date_increment' => 1,
63 '#date_timezone' => '',
70 public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
71 if ($input !== FALSE) {
72 $date_input = $element['#date_date_element'] != 'none' && !empty($input['date']) ? $input['date'] : '';
73 $time_input = $element['#date_time_element'] != 'none' && !empty($input['time']) ? $input['time'] : '';
74 $date_format = $element['#date_date_element'] != 'none' ? static::getHtml5DateFormat($element) : '';
75 $time_format = $element['#date_time_element'] != 'none' ? static::getHtml5TimeFormat($element) : '';
76 $timezone = !empty($element['#date_timezone']) ? $element['#date_timezone'] : NULL;
78 // Seconds will be omitted in a post in case there's no entry.
79 if (!empty($time_input) && strlen($time_input) == 5) {
84 $date_time_format = trim($date_format . ' ' . $time_format);
85 $date_time_input = trim($date_input . ' ' . $time_input);
86 $date = DrupalDateTime::createFromFormat($date_time_format, $date_time_input, $timezone);
88 catch (\Exception $e) {
92 'date' => $date_input,
93 'time' => $time_input,
98 $date = $element['#default_value'];
99 if ($date instanceof DrupalDateTime && !$date->hasErrors()) {
101 'date' => $date->format($element['#date_date_format']),
102 'time' => $date->format($element['#date_time_format']),
118 * Expands a datetime element type into date and/or time elements.
120 * All form elements are designed to have sane defaults so any or all can be
121 * omitted. Both the date and time components are configurable so they can be
122 * output as HTML5 datetime elements or not, as desired.
124 * Examples of possible configurations include:
125 * HTML5 date and time:
126 * #date_date_element = 'date';
127 * #date_time_element = 'time';
129 * #date_date_element = 'datetime';
130 * #date_time_element = 'none';
132 * #date_date_element = 'none';
133 * #date_time_element = 'time'
135 * #date_date_element = 'text';
136 * #date_time_element = 'text';
139 * - #default_value: A DrupalDateTime object, adjusted to the proper local
140 * timezone. Converting a date stored in the database from UTC to the local
141 * zone and converting it back to UTC before storing it is not handled here.
142 * This element accepts a date as the default value, and then converts the
143 * user input strings back into a new date object on submission. No timezone
144 * adjustment is performed.
145 * Optional properties include:
146 * - #date_date_format: A date format string that describes the format that
147 * should be displayed to the end user for the date. When using HTML5
148 * elements the format MUST use the appropriate HTML5 format for that
149 * element, no other format will work. See the format_date() function for a
150 * list of the possible formats and HTML5 standards for the HTML5
151 * requirements. Defaults to the right HTML5 format for the chosen element
152 * if a HTML5 element is used, otherwise defaults to
153 * DateFormat::load('html_date')->getPattern().
154 * - #date_date_element: The date element. Options are:
155 * - datetime: Use the HTML5 datetime element type.
156 * - datetime-local: Use the HTML5 datetime-local element type.
157 * - date: Use the HTML5 date element type.
158 * - text: No HTML5 element, use a normal text field.
159 * - none: Do not display a date element.
160 * - #date_date_callbacks: Array of optional callbacks for the date element.
161 * Can be used to add a jQuery datepicker.
162 * - #date_time_element: The time element. Options are:
163 * - time: Use a HTML5 time element type.
164 * - text: No HTML5 element, use a normal text field.
165 * - none: Do not display a time element.
166 * - #date_time_format: A date format string that describes the format that
167 * should be displayed to the end user for the time. When using HTML5
168 * elements the format MUST use the appropriate HTML5 format for that
169 * element, no other format will work. See the format_date() function for
170 * a list of the possible formats and HTML5 standards for the HTML5
171 * requirements. Defaults to the right HTML5 format for the chosen element
172 * if a HTML5 element is used, otherwise defaults to
173 * DateFormat::load('html_time')->getPattern().
174 * - #date_time_callbacks: An array of optional callbacks for the time
175 * element. Can be used to add a jQuery timepicker or an 'All day' checkbox.
176 * - #date_year_range: A description of the range of years to allow, like
177 * '1900:2050', '-3:+3' or '2000:+3', where the first value describes the
178 * earliest year and the second the latest year in the range. A year
179 * in either position means that specific year. A +/- value describes a
180 * dynamic value that is that many years earlier or later than the current
181 * year at the time the form is displayed. Used in jQueryUI datepicker year
182 * range and HTML5 min/max date settings. Defaults to '1900:2050'.
183 * - #date_increment: The increment to use for minutes and seconds, i.e.
184 * '15' would show only :00, :15, :30 and :45. Used for HTML5 step values and
185 * jQueryUI datepicker settings. Defaults to 1 to show every minute.
186 * - #date_timezone: The local timezone to use when creating dates. Generally
187 * this should be left empty and it will be set correctly for the user using
188 * the form. Useful if the default value is empty to designate a desired
189 * timezone for dates created in form processing. If a default date is
190 * provided, this value will be ignored, the timezone in the default date
191 * takes precedence. Defaults to the value returned by
192 * drupal_get_user_timezone().
197 * '#type' => 'datetime',
198 * '#default_value' => new DrupalDateTime('2000-01-01 00:00:00'),
199 * '#date_date_element' => 'date',
200 * '#date_time_element' => 'none',
201 * '#date_year_range' => '2010:+3',
205 * @param array $element
206 * The form element whose value is being processed.
207 * @param \Drupal\Core\Form\FormStateInterface $form_state
208 * The current state of the form.
209 * @param array $complete_form
210 * The complete form structure.
213 * The form element whose value has been processed.
215 public static function processDatetime(&$element, FormStateInterface $form_state, &$complete_form) {
216 $format_settings = [];
217 // The value callback has populated the #value array.
218 $date = !empty($element['#value']['object']) ? $element['#value']['object'] : NULL;
220 // Set a fallback timezone.
221 if ($date instanceof DrupalDateTime) {
222 $element['#date_timezone'] = $date->getTimezone()->getName();
224 elseif (empty($element['#timezone'])) {
225 $element['#date_timezone'] = drupal_get_user_timezone();
228 $element['#tree'] = TRUE;
230 if ($element['#date_date_element'] != 'none') {
232 $date_format = $element['#date_date_element'] != 'none' ? static::getHtml5DateFormat($element) : '';
233 $date_value = !empty($date) ? $date->format($date_format, $format_settings) : $element['#value']['date'];
235 // Creating format examples on every individual date item is messy, and
236 // placeholders are invalid for HTML5 date and datetime, so an example
237 // format is appended to the title to appear in tooltips.
238 $extra_attributes = [
239 'title' => t('Date (e.g. @format)', ['@format' => static::formatExample($date_format)]),
240 'type' => $element['#date_date_element'],
243 // Adds the HTML5 date attributes.
244 if ($date instanceof DrupalDateTime && !$date->hasErrors()) {
245 $html5_min = clone($date);
246 $range = static::datetimeRangeYears($element['#date_year_range'], $date);
247 $html5_min->setDate($range[0], 1, 1)->setTime(0, 0, 0);
248 $html5_max = clone($date);
249 $html5_max->setDate($range[1], 12, 31)->setTime(23, 59, 59);
251 $extra_attributes += [
252 'min' => $html5_min->format($date_format, $format_settings),
253 'max' => $html5_max->format($date_format, $format_settings),
259 '#title' => t('Date'),
260 '#title_display' => 'invisible',
261 '#value' => $date_value,
262 '#attributes' => $element['#attributes'] + $extra_attributes,
263 '#required' => $element['#required'],
264 '#size' => max(12, strlen($element['#value']['date'])),
265 '#error_no_message' => TRUE,
266 '#date_date_format' => $element['#date_date_format'],
269 // Allows custom callbacks to alter the element.
270 if (!empty($element['#date_date_callbacks'])) {
271 foreach ($element['#date_date_callbacks'] as $callback) {
272 if (function_exists($callback)) {
273 $callback($element, $form_state, $date);
279 if ($element['#date_time_element'] != 'none') {
281 $time_format = $element['#date_time_element'] != 'none' ? static::getHtml5TimeFormat($element) : '';
282 $time_value = !empty($date) ? $date->format($time_format, $format_settings) : $element['#value']['time'];
284 // Adds the HTML5 attributes.
285 $extra_attributes = [
286 'title' => t('Time (e.g. @format)', ['@format' => static::formatExample($time_format)]),
287 'type' => $element['#date_time_element'],
288 'step' => $element['#date_increment'],
292 '#title' => t('Time'),
293 '#title_display' => 'invisible',
294 '#value' => $time_value,
295 '#attributes' => $element['#attributes'] + $extra_attributes,
296 '#required' => $element['#required'],
298 '#error_no_message' => TRUE,
301 // Allows custom callbacks to alter the element.
302 if (!empty($element['#date_time_callbacks'])) {
303 foreach ($element['#date_time_callbacks'] as $callback) {
304 if (function_exists($callback)) {
305 $callback($element, $form_state, $date);
315 * Validation callback for a datetime element.
317 * If the date is valid, the date object created from the user input is set in
318 * the form for use by the caller. The work of compiling the user input back
319 * into a date object is handled by the value callback, so we can use it here.
320 * We also have the raw input available for validation testing.
322 * @param array $element
323 * The form element whose value is being validated.
324 * @param \Drupal\Core\Form\FormStateInterface $form_state
325 * The current state of the form.
326 * @param array $complete_form
327 * The complete form structure.
329 public static function validateDatetime(&$element, FormStateInterface $form_state, &$complete_form) {
330 $input_exists = FALSE;
331 $input = NestedArray::getValue($form_state->getValues(), $element['#parents'], $input_exists);
334 $title = !empty($element['#title']) ? $element['#title'] : '';
335 $date_format = $element['#date_date_element'] != 'none' ? static::getHtml5DateFormat($element) : '';
336 $time_format = $element['#date_time_element'] != 'none' ? static::getHtml5TimeFormat($element) : '';
337 $format = trim($date_format . ' ' . $time_format);
339 // If there's empty input and the field is not required, set it to empty.
340 if (empty($input['date']) && empty($input['time']) && !$element['#required']) {
341 $form_state->setValueForElement($element, NULL);
343 // If there's empty input and the field is required, set an error. A
344 // reminder of the required format in the message provides a good UX.
345 elseif (empty($input['date']) && empty($input['time']) && $element['#required']) {
346 $form_state->setError($element, t('The %field date is required. Please enter a date in the format %format.', ['%field' => $title, '%format' => static::formatExample($format)]));
349 // If the date is valid, set it.
350 $date = $input['object'];
351 if ($date instanceof DrupalDateTime && !$date->hasErrors()) {
352 $form_state->setValueForElement($element, $date);
354 // If the date is invalid, set an error. A reminder of the required
355 // format in the message provides a good UX.
357 $form_state->setError($element, t('The %field date is invalid. Please enter a date in the format %format.', ['%field' => $title, '%format' => static::formatExample($format)]));
364 * Creates an example for a date format.
366 * This is centralized for a consistent method of creating these examples.
368 * @param string $format
372 public static function formatExample($format) {
373 if (!static::$dateExample) {
374 static::$dateExample = new DrupalDateTime();
376 return static::$dateExample->format($format);
380 * Retrieves the right format for a HTML5 date element.
382 * The format is important because these elements will not work with any other
385 * @param string $element
386 * The $element to assess.
389 * Returns the right format for the date element, or the original format
390 * if this is not a HTML5 element.
392 protected static function getHtml5DateFormat($element) {
393 switch ($element['#date_date_element']) {
395 return DateFormat::load('html_date')->getPattern();
398 case 'datetime-local':
399 return DateFormat::load('html_datetime')->getPattern();
402 return $element['#date_date_format'];
407 * Retrieves the right format for a HTML5 time element.
409 * The format is important because these elements will not work with any other
412 * @param string $element
413 * The $element to assess.
416 * Returns the right format for the time element, or the original format
417 * if this is not a HTML5 element.
419 protected static function getHtml5TimeFormat($element) {
420 switch ($element['#date_time_element']) {
422 return DateFormat::load('html_time')->getPattern();
425 return $element['#date_time_format'];