1.20.x views_handler_field_math.inc | views_handler_field_math::options_form(&$form, &$form_state) |
Default options form that provides the label widget that all fields should have.
Overrides views_handler_field_numeric::options_form
File
- modules/
views/ handlers/ views_handler_field_math.inc, line 25 - Definition of views_handler_field_math.
Class
- views_handler_field_math
- Render a mathematical expression as a numeric value
Code
function options_form(&$form, &$form_state) {
$form['expression'] = array(
'#type' => 'textarea',
'#title' => t('Expression'),
'#description' => t("Enter mathematical expressions such as <code>2 + 2</code> or <code>sqrt(5)</code>. You may assign variables and create mathematical functions and evaluate them. Use the <code>;</code> to separate these. For example: <code>f(x) = x + 2; f(2)</code>. The result of the mathematical expression of the previous row can be accessed by using the <code>[expression]</code> 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']['#states']);
unset($form['alter']['help']);
}