function views_handler_filter_in_operator::validate

Overrides views_handler::validate

File

handlers/views_handler_filter_in_operator.inc, line 391

Class

views_handler_filter_in_operator

Simple filter to handle matching of multiple options selectable via checkboxes

Code

function validate() {
    $this->get_value_options();
    $errors = array();
    // If the operator is an operator which doesn't require a value, there is
    // no need for additional validation.
    if (in_array($this->operator, $this->operator_values(0))) {
        return array();
    }
    if (!in_array($this->operator, $this->operator_values(1))) {
        $errors[] = t('The operator is invalid on filter: @filter.', array(
            '@filter' => $this->ui_name(TRUE),
        ));
    }
    if (is_array($this->value)) {
        if (!isset($this->value_options)) {
            // Don't validate if there are none value options provided, for example for special handlers.
            return $errors;
        }
        if ($this->options['exposed'] && !$this->options['expose']['required'] && empty($this->value)) {
            // Don't validate if the field is exposed and no default value is provided.
            return $errors;
        }
        // Some filter_in_operator usage uses optgroups forms, so flatten it.
        $flat_options = form_options_flatten($this->value_options, TRUE);
        // Remove every element which is not known.
        foreach ($this->value as $value) {
            if (!isset($flat_options[$value])) {
                unset($this->value[$value]);
            }
        }
        // Choose different kind of ouput for 0, a single and multiple values.
        if (count($this->value) == 0) {
            $errors[] = t('No valid values found on filter: @filter.', array(
                '@filter' => $this->ui_name(TRUE),
            ));
        }
    }
    elseif (!empty($this->value) && ($this->operator == 'in' || $this->operator == 'not in')) {
        $errors[] = t('The value @value is not an array for @operator on filter: @filter', array(
            '@value' => views_var_export($this->value),
            '@operator' => $this->operator,
            '@filter' => $this->ui_name(TRUE),
        ));
    }
    return $errors;
}