Is there a way to do this? Currently I have an image_submit_tag with name: 'back_button'. It might be irritating to click back but cannot go back until the current form validates. Thank you.
I'm dealing with the same problem.
Did you find a way to do it?
i wound up disabling validations on new, enabling them on edit.
Coming up in the 4.0 release you'll be able to set data-validate="false" on the form's inputs to disable validations.
Is there a way to solve it at 3.1.3 with a JS callback ?