In our application we have normal users. However, we want to be able to make invitations, to invite certain people. Note that an invitation is directly coupled to a user, as
There are at least two ways to do what you want:
Method 1:
Overload Devise's password_required? method
class User < ActiveRecord::Base
attr_accessor :skip_password_validation # virtual attribute to skip password validation while saving
protected
def password_required?
return false if skip_password_validation
super
end
end
Usage:
@user.skip_password_validation = true
@user.save
Method 2:
Disable validation with validate: false option:
user.save(validate: false)
This will skip validation of all fields (not only password). In this case you should make sure that all other fields are valid.
...
But I advise you to not create users without password in your particular case. I would create some additional table (for example, invitations) and store all required information including the fields that you want to be assigned to a user after confirmation.