image_effect_scale_validate
function image_effect_scale_validate
image_effect_scale_validate($element, &$form_state)
Element validate handler to ensure that either a height or a width is specified.
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.')); } }
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https://api.drupal.org/api/drupal/modules!image!image.admin.inc/function/image_effect_scale_validate/7.x