rails fields_for does not render after validation error on nested form

Question

I have a nested form problem. I implemented the nested forms solution form the railscasts 196 & 197. It works if I have no validation errors.

So, form renders pe

Answer 1

Does it throw an error?

My guess is your problem is that in your new action, you are doing @property.images.build, which is not in your edit action. When the validation fails, it will render your new action, but won't run your new action. You could try putting @property.images.build in the else clause of your create action like:

else
  @property.images.build
  render :action => 'new'
end

Not the cleanest way to do it, by any means, but this will help track down if that is your issue.