Hi,
I extended alfresco model and added new mandatory field to cm:folder. Now I want to check the uniqueness of the entered value, while creating an new folder. For this purpose I tried adding a validation-handler in form-config.xml, but as I observed you don't use validation-handler for server-side validations (just used for regex and null checks). Besides async behavior of server requests frustrated all my attempts.
Can you tell me the best way of server-side validation of form fields? Thanks in advance for your help.