/**
* Form element validation handler for #type 'number'.
*
* Note that #required is validated by _form_validate() already.
*/
public static function validateNumber(&$element, FormStateInterface $form_state, &$complete_form)
{
$value = $element['#value'];
if ($value === '') {
return;
}
$name = empty($element['#title']) ? $element['#parents'][0] : $element['#title'];
// Ensure the input is numeric.
if (!is_numeric($value)) {
$form_state->setError($element, t('%name must be a number.', array('%name' => $name)));
return;
}
// Ensure that the input is greater than the #min property, if set.
if (isset($element['#min']) && $value < $element['#min']) {
$form_state->setError($element, t('%name must be higher than or equal to %min.', array('%name' => $name, '%min' => $element['#min'])));
}
// Ensure that the input is less than the #max property, if set.
if (isset($element['#max']) && $value > $element['#max']) {
$form_state->setError($element, t('%name must be lower than or equal to %max.', array('%name' => $name, '%max' => $element['#max'])));
}
if (isset($element['#step']) && strtolower($element['#step']) != 'any') {
// Check that the input is an allowed multiple of #step (offset by #min if
// #min is set).
$offset = isset($element['#min']) ? $element['#min'] : 0.0;
if (!NumberUtility::validStep($value, $element['#step'], $offset)) {
$form_state->setError($element, t('%name is not a valid number.', array('%name' => $name)));
}
}
}
/**
* Tests Number::validStep() with offset.
*
* @dataProvider providerTestValidStepOffset
* @covers ::validStep
*
* @param numeric $value
* The value argument for Number::validStep().
* @param numeric $step
* The step argument for Number::validStep().
* @param numeric $offset
* The offset argument for Number::validStep().
* @param bool $expected
* Expected return value from Number::validStep().
*/
public function testValidStepOffset($value, $step, $offset, $expected)
{
$return = Number::validStep($value, $step, $offset);
$this->assertEquals($expected, $return);
}
