handler_filter_options.inc in Search API 7
Contains the SearchApiViewsHandlerFilterOptions class.
File
contrib/search_api_views/includes/handler_filter_options.incView source
<?php
/**
* @file
* Contains the SearchApiViewsHandlerFilterOptions class.
*/
/**
* Views filter handler for fields with a limited set of possible values.
*/
class SearchApiViewsHandlerFilterOptions extends SearchApiViewsHandlerFilter {
/**
* Stores the values which are available on the form.
*
* @var array
*/
protected $value_options = NULL;
/**
* The type of form element used to display the options.
*
* @var string
*/
protected $value_form_type = 'checkboxes';
/**
* Retrieves a wrapper for this filter's field.
*
* @return EntityMetadataWrapper|null
* A wrapper for the field which this filter uses.
*/
protected function get_wrapper() {
if ($this->query) {
$index = $this->query
->getIndex();
}
elseif (substr($this->view->base_table, 0, 17) == 'search_api_index_') {
$index = search_api_index_load(substr($this->view->base_table, 17));
}
else {
return NULL;
}
$wrapper = $index
->entityWrapper(NULL, TRUE);
$parts = explode(':', $this->real_field);
foreach ($parts as $i => $part) {
if (!isset($wrapper->{$part})) {
return NULL;
}
$wrapper = $wrapper->{$part};
$info = $wrapper
->info();
if ($i < count($parts) - 1) {
// Unwrap lists.
$level = search_api_list_nesting_level($info['type']);
for ($j = 0; $j < $level; ++$j) {
$wrapper = $wrapper[0];
}
}
}
return $wrapper;
}
/**
* Fills the value_options property with all possible options.
*/
protected function get_value_options() {
if (isset($this->value_options)) {
return;
}
$wrapper = $this
->get_wrapper();
if ($wrapper) {
$this->value_options = $wrapper
->optionsList('view');
}
else {
$this->value_options = array();
}
}
/**
* Provide a list of options for the operator form.
*/
public function operator_options() {
$options = array(
'=' => t('Is one of'),
'all of' => t('Is all of'),
'<>' => t('Is none of'),
'empty' => t('Is empty'),
'not empty' => t('Is not empty'),
);
// "Is all of" doesn't make sense for single-valued fields.
if (empty($this->definition['multi-valued'])) {
unset($options['all of']);
}
return $options;
}
/**
* Set "reduce" option to FALSE by default.
*/
public function expose_options() {
parent::expose_options();
$this->options['expose']['reduce'] = FALSE;
}
/**
* Add the "reduce" option to the exposed form.
*/
public function expose_form(&$form, &$form_state) {
parent::expose_form($form, $form_state);
$form['expose']['reduce'] = array(
'#type' => 'checkbox',
'#title' => t('Limit list to selected items'),
'#description' => t('If checked, the only items presented to the user will be the ones selected here.'),
'#default_value' => !empty($this->options['expose']['reduce']),
);
}
/**
* Define "reduce" option.
*/
public function option_definition() {
$options = parent::option_definition();
$options['value'] = array(
'default' => '',
);
$options['expose']['contains']['reduce'] = array(
'default' => FALSE,
);
return $options;
}
/**
* Reduce the options according to the selection.
*/
protected function reduce_value_options() {
foreach ($this->value_options as $id => $option) {
if (!isset($this->options['value'][$id])) {
unset($this->value_options[$id]);
}
}
return $this->value_options;
}
/**
* Save set checkboxes.
*/
public function value_submit($form, &$form_state) {
// Drupal's FAPI system automatically puts '0' in for any checkbox that
// was not set, and the key to the checkbox if it is set.
// Unfortunately, this means that if the key to that checkbox is 0,
// we are unable to tell if that checkbox was set or not.
// Luckily, the '#value' on the checkboxes form actually contains
// *only* a list of checkboxes that were set, and we can use that
// instead.
$form_state['values']['options']['value'] = $form['value']['#value'];
}
/**
* Provide a form for setting options.
*/
public function value_form(&$form, &$form_state) {
$this
->get_value_options();
if (!empty($this->options['expose']['reduce']) && !empty($form_state['exposed'])) {
$options = $this
->reduce_value_options();
}
else {
$options = $this->value_options;
}
$form['value'] = array(
'#type' => $this->value_form_type,
'#title' => empty($form_state['exposed']) ? t('Value') : '',
'#options' => $options,
'#multiple' => TRUE,
'#size' => min(4, count($options)),
'#default_value' => is_array($this->value) ? $this->value : array(),
);
// Hide the value box if the operator is 'empty' or 'not empty'.
// Radios share the same selector so we have to add some dummy selector.
if (empty($form_state['exposed'])) {
$form['value']['#states']['visible'] = array(
':input[name="options[operator]"],dummy-empty' => array(
'!value' => 'empty',
),
':input[name="options[operator]"],dummy-not-empty' => array(
'!value' => 'not empty',
),
);
}
elseif (!empty($this->options['expose']['use_operator'])) {
$name = $this->options['expose']['operator_id'];
$form['value']['#states']['visible'] = array(
':input[name="' . $name . '"],dummy-empty' => array(
'!value' => 'empty',
),
':input[name="' . $name . '"],dummy-not-empty' => array(
'!value' => 'not empty',
),
);
}
}
/**
* Provides a summary of this filter's value for the admin UI.
*/
public function admin_summary() {
if (!empty($this->options['exposed'])) {
return t('exposed');
}
if ($this->operator === 'empty') {
return t('is empty');
}
if ($this->operator === 'not empty') {
return t('is not empty');
}
if (!is_array($this->value)) {
return;
}
$operator_options = $this
->operator_options();
$operator = $operator_options[$this->operator];
$values = '';
// Remove every element which is not known.
$this
->get_value_options();
foreach ($this->value as $i => $value) {
if (!isset($this->value_options[$value])) {
unset($this->value[$i]);
}
}
// Choose different kind of ouput for 0, a single and multiple values.
if (count($this->value) == 0) {
return $this->operator != '<>' ? t('none') : t('any');
}
elseif (count($this->value) == 1) {
switch ($this->operator) {
case '=':
case 'all of':
$operator = '=';
break;
case '<>':
$operator = '<>';
break;
}
// If there is only a single value, use just the plain operator, = or <>.
$operator = check_plain($operator);
$values = check_plain($this->value_options[reset($this->value)]);
}
else {
foreach ($this->value as $value) {
if ($values !== '') {
$values .= ', ';
}
if (drupal_strlen($values) > 20) {
$values .= '…';
break;
}
$values .= check_plain($this->value_options[$value]);
}
}
return $operator . ($values !== '' ? ' ' . $values : '');
}
/**
* {@inheritdoc}
*/
function accept_exposed_input($input) {
$accepted = parent::accept_exposed_input($input);
// Grouped filters will have the raw form values structure from the
// checkboxes as the value here. Convert that into the correct array of
// values instead.
if ($accepted && is_array($this->value) && $this
->is_a_group()) {
// For some reason, Views thinks it's a good idea to nest the form values
// into a second array in some cases. That one will be numerically indexed
// with just a single entry, though, so it should be relatively easy to
// spot.
if (count($this->value) && isset($this->value[0])) {
$this->value = reset($this->value);
}
$this->value = array_keys(array_filter($this->value));
if (!$this->value) {
return FALSE;
}
}
return $accepted;
}
/**
* Add this filter to the query.
*/
public function query() {
if ($this->operator === 'empty') {
$this->query
->condition($this->real_field, NULL, '=', $this->options['group']);
return;
}
if ($this->operator === 'not empty') {
$this->query
->condition($this->real_field, NULL, '<>', $this->options['group']);
return;
}
// Extract the value.
while (is_array($this->value) && count($this->value) == 1) {
$this->value = reset($this->value);
}
// Determine operator and conjunction. The defaults are already right for
// "all of".
$operator = '=';
$conjunction = 'AND';
switch ($this->operator) {
case '=':
$conjunction = 'OR';
break;
case '<>':
$operator = '<>';
break;
}
// If the value is an empty array, we either want no filter at all (for
// "is none of"), or want to find only items with no value for the field.
if ($this->value === array()) {
if ($operator != '<>') {
$this->query
->condition($this->real_field, NULL, '=', $this->options['group']);
}
return;
}
if (is_scalar($this->value) && $this->value !== '') {
$this->query
->condition($this->real_field, $this->value, $operator, $this->options['group']);
}
elseif ($this->value) {
$filter = $this->query
->createFilter($conjunction);
// $filter will be NULL if there were errors in the query.
if ($filter) {
foreach ($this->value as $v) {
$filter
->condition($this->real_field, $v, $operator);
}
$this->query
->filter($filter, $this->options['group']);
}
}
}
}
Classes
Name | Description |
---|---|
SearchApiViewsHandlerFilterOptions | Views filter handler for fields with a limited set of possible values. |