ModelView ignoring viewonly on relationship

[cancan101]

I have a relationship marked viewonly however the edit form for the ModelView still seems to render this field.

[ljluestc]

from flask_admin.contrib.sqla import ModelView
from your_module import YourModel

class CustomModelView(ModelView):
    # Override form_columns to exclude view-only relationships
    def scaffold_form(self):
        form_class = super().scaffold_form()
        if hasattr(self.model, '__viewonly__'):
            for field_name in self.model.__viewonly__:
                if hasattr(form_class, field_name):
                    delattr(form_class, field_name)
        return form_class

admin.add_view(CustomModelView(YourModel))