function views_handler_field_math::options_form

Overrides views_handler_field_numeric::options_form

File

handlers/views_handler_field_math.inc, line 32

Class

views_handler_field_math

Render a mathematical expression as a numeric value.

Code

public function options_form(&$form, &$form_state) {
    $form['expression'] = array(
        '#type' => 'textarea',
        '#title' => t('Expression'),
        '#description' => t("Enter mathematical expressions such as 2 + 2 or sqrt(5). You may assign variables and create mathematical functions and evaluate them. Use the ; to separate these. For example: f(x) = x + 2; f(2). The result of the previous row's mathematical expression can be accessed by using the [expression] token itself."),
        '#default_value' => $this->options['expression'],
    );
    // Create a place for the help.
    $form['expression_help'] = array();
    parent::options_form($form, $form_state);
    // Then move the existing help.
    $form['expression_help'] = $form['alter']['help'];
    unset($form['expression_help']['#dependency']);
    unset($form['alter']['help']);
}