/**
* Determines if the input from a filter should change the generated query.
*
* @param array $input
* The exposed data for this view.
*
* @return bool
* TRUE if the input for this filter should be included in the view query.
* FALSE otherwise.
*/
public function acceptExposedInput($input)
{
if (empty($this->options['exposed'])) {
return TRUE;
}
if (!empty($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 (!empty($this->options['expose']['identifier'])) {
$value = $input[$this->options['expose']['identifier']];
// Various ways to check for the absence of non-required input.
if (empty($this->options['expose']['required'])) {
if (($this->operator == 'empty' || $this->operator == 'not empty') && $value === '') {
$value = ' ';
}
if ($this->operator != 'empty' && $this->operator != 'not empty') {
if ($value == 'All' || $value === array()) {
return FALSE;
}
// If checkboxes are used to render this filter, do not include the
// filter if no options are checked.
if (is_array($value) && Checkboxes::detectEmptyCheckboxes($value)) {
return FALSE;
}
}
if (!empty($this->alwaysMultiple) && $value === '') {
return FALSE;
}
}
if (isset($value)) {
$this->value = $value;
if (empty($this->alwaysMultiple) && empty($this->options['expose']['multiple']) && !is_array($value)) {
$this->value = array($value);
}
} else {
return FALSE;
}
}
return TRUE;
}
