/
acts_as_role_context.rb
56 lines (47 loc) · 1.65 KB
/
acts_as_role_context.rb
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module ActiveRecord
module ActsAsRoleContext
def self.included(base)
base.extend ActMacro
end
module ActMacro
def acts_as_role_context(options = {})
return if acts_as_role_context?
include InstanceMethods
extend ClassMethods
class_inheritable_accessor :roles, :default_permissions
self.roles = Array(options[:roles]).compact
self.default_permissions = {}
if options[:implicit_roles]
define_method(:implicit_roles, &options[:implicit_roles])
end
end
def acts_as_role_context?
included_modules.include?(ActiveRecord::ActsAsRoleContext::InstanceMethods)
end
end
module InstanceMethods
def role_context(role)
self.class.roles.include?(role) ? self : owner && owner.role_context(role)
end
def role_authorizing(action, type = nil)
type ||= self.class.name.demodulize.downcase.to_sym
role = permissions[type][action] if respond_to?(:permissions) && permissions[type]
returning Role.build(role, self) || owner && owner.role_authorizing(action, type) do |role|
raise "could not find role for #{type}: #{action} (on: #{self.inspect})" unless role
role.original_context = self
end
end
def permissions
@permissions ||= begin
roles = read_attribute(:permissions) || {}
self.class.default_permissions.update roles # TODO needs a deep merge?
end
end
end
module ClassMethods
def permissions(values)
self.default_permissions = PermissionMap.new values
end
end
end
end