function image_effect_scale_validate in Drupal 7

Element validate handler to ensure that either a height or a width is specified.

1 string reference to 'image_effect_scale_validate'

image_scale_form in modules/image/image.admin.inc

Form structure for the image scale form.

File

modules/image/image.admin.inc, line 509

Administration pages for image settings.

Code

function image_effect_scale_validate($element, &$form_state) {
  if (empty($element['width']['#value']) && empty($element['height']['#value'])) {
    form_error($element, t('Width and height can not both be blank.'));
  }
}