Server-side form-validation: How to load errors into a form?

[wuschba]

Hello. I save a form by a Ext.Ajax.request. My problem is that I have to do a server-side form-validation because some errors depending on a actual database-query (like some fields have to be unique and another user could have graped this value between form-loading and form-saving).

What is the way to show JsExt-Errors then beside the fields of the form? Is there something build-in I could use or do I have to set every error "manually" by my own code?

[devnull]

the API docs for form.Action.Submit show very clearly what the return json format needs to be to display server-side validation errors in the form.