Form: add Ajax handler¶
Enhances an existing form field element with an Ajax handler for refreshing parts of a form without refreshing the whole page.
The input name of the form field. This is mostly found in the "name" attribute of an <input> form element. For submit buttons within content forms: Use "submit" for the labeled "Save" button, and "preview" for the labeled "Preview" button. This property supports tokens. When this form element got Ajax handling attached, using this element will automatically submit the form. Therefore, you can react upon that with regular form events like Build form, Submit form and when validation is enabled, also Validate form.
Disable validation errors
Enable this option to completely suppress validation errors.
Validate form fields
Machine names of form fields that should be validated. Define multiple values separated with comma. Example: first_name,last_name. When no fields are defined at all and validation is not disabled above, then the whole form will be validated.
The machine name of the form element target to refresh via Ajax. When empty, then the whole form will be refreshed.