Mongoid sets a default :blank error message in it's locale file. This is confusing when trying to override error messages within your own app as every overriden message will work except :blank

I added an error message to config/locales/en.yml

en:
errors:
messages:
blank: 'please complete'

This works for other all the other validation messages apart from :blank as Mongoid supplies it's own default.

I think Mongoid should use the ActiveModel default. This will save confusion for others when overriding error messages.

What do you think?