WTForms: what and how should the Form class return?

Question

MongoDB

Dear colleagues.

The problem is this: in WTForms I use the FormField(Birthday) field . The Birthday class has three fields: day, month, and year. I want the user to be able to select a date from choices. In the model itself, birthday is a field datatimeField .

But when using form.populate_obj(user) , which saves fields of the same name to the database from the form, I get a completely logical error - "The date format is not writable". That is, it cannot write birthday.day , birthday.month and birthday.year .



What function to use to combine the data inside the class and send it to the FormField??? Or is there another way to solve this problem?

Answer 1

I don't know exactly how it's done in WTForms, but in Django it's done a little differently.
There are composite widgets, that is, there is one field, and it is rendered into two or more inputs.
Validation produces only one value.
I found a similar moment in WTForms wtforms.simplecodes.com/docs/0.6.1/fields.html#fie...