farm_fields_handler_filter_entity.inc in farmOS 7
Definition of farm_fields_handler_filter_entity.
File
modules/farm/farm_fields/views/handlers/farm_fields_handler_filter_entity.incView source
<?php
/**
* @file
* Definition of farm_fields_handler_filter_entity.
*/
/**
* Provide an exposed filter that entity reference options in a select list.
*
* This is based heavily on the code in views_handler_filter_term_node_tid,
* modified to simplify and remove unneeded options.
*
* This class serves as a base for other handlers to extend. It does not work
* by itself. See farm_fields_handler_filter_log_owner for an example of a
* handler that extends it.
*
* @ingroup views_filter_handlers
*/
class farm_fields_handler_filter_entity extends views_handler_filter_many_to_one {
// Stores the entity type for the filter. This should be set by the
// extending class.
var $entity_type = NULL;
// Stores the exposed input for this filter.
var $validated_exposed_input = NULL;
/**
* Returns an array of entity IDs to include in the exposed filter.
*/
public function entity_ids() {
return array();
}
function value_form(&$form, &$form_state) {
$options = array();
// Get the entity IDs.
$ids = $this
->entity_ids();
// Load the entities and create a list of select options.
$entities = entity_load($this->entity_type, $ids);
foreach ($entities as $entity) {
list($id, $vid, $bundle) = entity_extract_ids($this->entity_type, $entity);
$options[$id] = entity_label($this->entity_type, $entity);
}
// Set the default value.
$default_value = (array) $this->value;
if (!empty($form_state['exposed'])) {
$identifier = $this->options['expose']['identifier'];
if (!empty($this->options['expose']['reduce'])) {
$options = $this
->reduce_value_options($options);
if (!empty($this->options['expose']['multiple']) && empty($this->options['expose']['required'])) {
$default_value = array();
}
}
if (empty($this->options['expose']['multiple'])) {
if (empty($this->options['expose']['required']) && (empty($default_value) || !empty($this->options['expose']['reduce']))) {
$default_value = 'All';
}
elseif (empty($default_value)) {
$keys = array_keys($options);
$default_value = array_shift($keys);
}
elseif ($default_value == array(
'',
)) {
$default_value = 'All';
}
else {
$copy = $default_value;
$default_value = array_shift($copy);
}
}
}
$form['value'] = array(
'#type' => 'select',
'#title' => t('Select entities'),
'#multiple' => TRUE,
'#options' => $options,
'#size' => min(9, count($options)),
'#default_value' => $default_value,
);
if (!empty($form_state['exposed']) && isset($identifier) && !isset($form_state['input'][$identifier])) {
$form_state['input'][$identifier] = $default_value;
}
if (empty($form_state['exposed'])) {
// Retain the helper option
$this->helper
->options_form($form, $form_state);
// Show help text if not exposed to end users.
$form['value']['#description'] = t('Leave blank for all. Otherwise, the first selection will be the default instead of "Any".');
}
}
function accept_exposed_input($input) {
if (empty($this->options['exposed'])) {
return TRUE;
}
// We need to know the operator, which is normally set in
// views_handler_filter::accept_exposed_input(), before we actually call
// the parent version of ourselves.
if (!empty($this->options['expose']['use_operator']) && !empty($this->options['expose']['operator_id']) && isset($input[$this->options['expose']['operator_id']])) {
$this->operator = $input[$this->options['expose']['operator_id']];
}
// If view is an attachment and is inheriting exposed filters, then assume
// exposed input has already been validated
if (!empty($this->view->is_attachment) && $this->view->display_handler
->uses_exposed()) {
$this->validated_exposed_input = (array) $this->view->exposed_raw_input[$this->options['expose']['identifier']];
}
// If we're checking for EMPTY or NOT, we don't need any input, and we can
// say that our input conditions are met by just having the right operator.
if ($this->operator == 'empty' || $this->operator == 'not empty') {
return TRUE;
}
// If it's non-required and there's no value don't bother filtering.
if (!$this->options['expose']['required'] && empty($this->validated_exposed_input)) {
return FALSE;
}
$rc = parent::accept_exposed_input($input);
if ($rc) {
// If we have previously validated input, override.
if (!$this
->is_a_group() && isset($this->validated_exposed_input)) {
$this->value = $this->validated_exposed_input;
}
}
return $rc;
}
function exposed_validate(&$form, &$form_state) {
if (empty($this->options['exposed'])) {
return;
}
$identifier = $this->options['expose']['identifier'];
// Get the values from the form state.
if (isset($form_state['values'][$identifier]) && $form_state['values'][$identifier] != 'All') {
$this->validated_exposed_input = (array) $form_state['values'][$identifier];
}
}
function admin_summary() {
// set up $this->value_options for the parent summary
$this->value_options = array();
if ($this->value) {
$this->value = array_filter($this->value);
$result = entity_load($this->entity_type, $this->value);
foreach ($result as $entity) {
list($id, $vid, $bundle) = entity_extract_ids($this->entity_type, $entity);
$this->value_options[$id] = entity_label($this->entity_type, $entity);
}
}
return parent::admin_summary();
}
}
Classes
Name | Description |
---|---|
farm_fields_handler_filter_entity | Provide an exposed filter that entity reference options in a select list. |