Hi, is it possible to use form with data class and...

# kvision

[Tomas Kormanak]

Hi, is it possible to use form with data class and keep some properties, which are not editable (there is no matching field in form).
For example:

data class Comment(val title: String val note: String, author_id: Int)

And I the form contains only title and note, when I call form,getData() I get an error saying author_id is required.

[Tomas Kormanak]

In general our data classes rarely match the form fields exactly.

[Robert Jaros]

What value do you want to get for author_id? It would probably work if you have default value for it.

[Tomas Kormanak]

The value I passed in using form.setData()

[Tomas Kormanak]

In HTML form it would be hidden field, but actually I don need to render hidden field, just preserve the value.

[Robert Jaros]

The problem is the value passed with setData is not stored anywhere. setData just copies values for the items added to the form. setData is optional. You can only use getData and there must be a way to create an instance of the model class.

[Robert Jaros]

But perhaps it can be done ... there should be no problem storing the value and then just use it as a template to avoid deserialization error ...

[Robert Jaros]

Please fill an issue for this if you don't mind.

[Robert Jaros]

https://github.com/rjaros/kvision/issues/308