I am trying to assign default role for new users with CanCan gem. Administrator can assign multiple roles to a user. In order to do this I added the following code:
# User's role handler (More information: https://github.com/ryanb/cancan/wiki/role-based-authorization)
# This will perform the necessary bitwise operations to translate an array of roles into the integer field
ROLES = %w[admin moderator user banned].freeze
def roles=(roles)
self.roles_mask = (roles & ROLES).map { |r| 2**ROLES.index(r)}.inject(0, :+)
end
def roles
ROLES.reject do |r|
((roles_mask.to_i || 0) & 2**ROLES.index(r)).zero?
end
end
# Role Inheritance
def role?(base_role)
ROLES.index(base_role.to_s) <= ROLES.index(role)
end
# Check the user's roles
def is?(role)
roles.include?(role.to_s)
end
I want to define the default user role (which is :user) and I found this question: Rails Cancan: Defining Default Role on Signup
. It says that I have to simple add set_default_role method:
before_create :set_default_role
private
def set_default_role
self.role ||= Role.find_by_name('your_role')
end
But the problem that I am using a different approach of adding a new role. I have to store an integer instead of a string. Also, when you assign a role to the user, it stores an specific index to the users table. My idea was to add default: 4 value to the roles column in the database but I've noticed that adding new roles to the database changes the user index number. In other words if user role was equal to 4, after update it will be 8 (for example).
The question is how to assign the default role to the user?
Thank you very much for your help and time!
