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Angie Byron
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* Contains \Drupal\views\Plugin\views\sort\SortPluginBase.
namespace Drupal\views\Plugin\views\sort;
use Drupal\Core\Cache\Cache;
use Drupal\Core\Cache\CacheableDependencyInterface;
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use Drupal\Core\Form\FormStateInterface;
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use Drupal\views\Plugin\views\HandlerBase;
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* @defgroup views_sort_handlers Views sort handler plugins
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* Plugins that handle sorting for Views.
*
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* Sort handlers extend \Drupal\views\Plugin\views\sort:SortPluginBase. They
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* must be annotated with \Drupal\views\Annotation\ViewsSort annotation, and
* they must be in plugin directory Plugin\views\sort.
*
* @ingroup views_plugins
* @see plugin_api
*/
/**
* Base sort handler that has no options and performs a simple sort.
*/
abstract class SortPluginBase extends HandlerBase implements CacheableDependencyInterface {
/**
* Determine if a sort can be exposed.
*/
public function canExpose() { return TRUE; }
/**
* Called to add the sort to a query.
*/
public function query() {
$this->ensureMyTable();
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$this->query->addOrderBy($this->tableAlias, $this->realField, $this->options['order']);
protected function defineOptions() {
$options = parent::defineOptions();
$options['order'] = array('default' => 'ASC');
$options['exposed'] = array('default' => FALSE);
$options['expose'] = array(
'contains' => array(
'label' => array('default' => ''),
),
);
return $options;
}
/**
* Display whether or not the sort order is ascending or descending
*/
public function adminSummary() {
return $this->t('Exposed');
}
switch ($this->options['order']) {
case 'ASC':
case 'asc':
default:
return $this->t('asc');
return $this->t('desc');
break;
}
}
/**
* Basic options for all sort criteria
*/
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public function buildOptionsForm(&$form, FormStateInterface $form_state) {
parent::buildOptionsForm($form, $form_state);
if ($this->canExpose()) {
$this->showExposeButton($form, $form_state);
}
$form['op_val_start'] = array('#value' => '<div class="clearfix">');
$this->showSortForm($form, $form_state);
$form['op_val_end'] = array('#value' => '</div>');
if ($this->canExpose()) {
$this->showExposeForm($form, $form_state);
}
}
/**
* Shortcut to display the expose/hide button.
*/
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public function showExposeButton(&$form, FormStateInterface $form_state) {
$form['expose_button'] = array(
'#prefix' => '<div class="views-expose clearfix">',
'#suffix' => '</div>',
// Should always come first
'#weight' => -1000,
);
// Add a checkbox for JS users, which will have behavior attached to it
// so it can replace the button.
$form['expose_button']['checkbox'] = array(
'#theme_wrappers' => array('container'),
'#attributes' => array('class' => array('js-only')),
);
$form['expose_button']['checkbox']['checkbox'] = array(
'#title' => $this->t('Expose this sort to visitors, to allow them to change it'),
'#type' => 'checkbox',
);
// Then add the button itself.
if (empty($this->options['exposed'])) {
$form['expose_button']['markup'] = array(
'#markup' => '<div class="description exposed-description" style="float: left; margin-right:10px">' . $this->t('This sort is not exposed. Expose it to allow the users to change it.') . '</div>',
);
$form['expose_button']['button'] = array(
'#limit_validation_errors' => array(),
'#type' => 'submit',
'#value' => $this->t('Expose sort'),
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'#submit' => array(array($this, 'displayExposedForm')),
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'#attributes' => array('class' => array('use-ajax-submit')),
);
$form['expose_button']['checkbox']['checkbox']['#default_value'] = 0;
}
else {
$form['expose_button']['markup'] = array(
'#markup' => '<div class="description exposed-description">' . $this->t('This sort is exposed. If you hide it, users will not be able to change it.') . '</div>',
);
$form['expose_button']['button'] = array(
'#limit_validation_errors' => array(),
'#type' => 'submit',
'#value' => $this->t('Hide sort'),
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'#submit' => array(array($this, 'displayExposedForm')),
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'#attributes' => array('class' => array('use-ajax-submit')),
);
$form['expose_button']['checkbox']['checkbox']['#default_value'] = 1;
}
}
/**
* Simple validate handler
*/
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public function validateOptionsForm(&$form, FormStateInterface $form_state) {
$this->sortValidate($form, $form_state);
$this->validateExposeForm($form, $form_state);
}
}
/**
* Simple submit handler
*/
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public function submitOptionsForm(&$form, FormStateInterface $form_state) {
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// Do not store this values.
$form_state->unsetValue('expose_button');
$this->sortSubmit($form, $form_state);
$this->submitExposeForm($form, $form_state);
}
}
/**
* Shortcut to display the value form.
*/
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protected function showSortForm(&$form, FormStateInterface $form_state) {
$options = $this->sortOptions();
if (!empty($options)) {
$form['order'] = array(
'#title' => $this->t('Order'),
'#type' => 'radios',
'#options' => $options,
'#default_value' => $this->options['order'],
);
}
}
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protected function sortValidate(&$form, FormStateInterface $form_state) { }
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public function sortSubmit(&$form, FormStateInterface $form_state) { }
/**
* Provide a list of options for the default sort form.
* Should be overridden by classes that don't override sort_form
*/
protected function sortOptions() {
'ASC' => $this->t('Sort ascending'),
'DESC' => $this->t('Sort descending'),
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public function buildExposeForm(&$form, FormStateInterface $form_state) {
// #flatten will move everything from $form['expose'][$key] to $form[$key]
// prior to rendering. That's why the preRender for it needs to run first,
// so that when the next preRender (the one for fieldsets) runs, it gets
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array_unshift($form['#pre_render'], array(get_class($this), 'preRenderFlattenData'));
$form['expose']['#flatten'] = TRUE;
$form['expose']['label'] = array(
'#type' => 'textfield',
'#default_value' => $this->options['expose']['label'],
'#title' => $this->t('Label'),
'#required' => TRUE,
'#size' => 40,
'#weight' => -1,
);
}
/**
* Provide default options for exposed sorts.
*/
public function defaultExposeOptions() {
$this->options['expose'] = array(
'label' => $this->definition['title'],
);
}
/**
* {@inheritdoc}
*/
public function getCacheMaxAge() {
// The result of a sort does not depend on outside information, so by
// default it is cacheable.
return Cache::PERMANENT;
}
/**
* {@inheritdoc}
*/
public function getCacheContexts() {
$cache_contexts = [];
// Exposed sorts use GET parameters, so it depends on the current URL.
if ($this->isExposed()) {
$cache_contexts[] = 'url.query_args:sort_by';
}
return $cache_contexts;
}
/**
* {@inheritdoc}
*/
public function getCacheTags() {
return [];
}