How to pass get params to create form

[akudryav]

I'd like to prefill some fields on create new form depending on record in database. So want to pass id of this record in query param and how can I process get param on create new form page?

[mmzeynalli]

I think this is more wtforms related issue. Could you check their docs and use form_args with default and see if it works as you intend it to?