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Contents
module Shamu
module Security
# Mixin for {Policy} and {Support} classes to define security roles
# including inheritance.
module Roles
extend ActiveSupport::Concern
class_methods do
# @return [Hash] the named roles defined on the class.
def roles
@roles ||= {}
end
# Define a named role.
#
# @param [Symbol] name of the role.
# @param [Array<Symbol>] inherits additional roles that are
# automatically inherited when the named role is granted.
# @return [void]
def role( name, inherits: nil )
roles[ name.to_sym ] = { inherits: Array( inherits ) }
end
# Expand the given roles to include the roles that they have inherited.
# @param [Array<Symbol>] roles
# @return [Array<Symbol>] the expanded roles.
def expand_roles( *roles )
expand_roles_into( roles, [] )
end
# @param [Symbol] the role to check.
# @return [Boolean] true if the role has been defined.
def role_defined?( role )
roles.key?( role.to_sym )
end
private
def expand_roles_into( roles, expanded )
roles.each do |name|
name = name.to_sym
next unless role = self.roles[ name ]
expanded << name
role[ :inherits ].each do |inherited|
next if expanded.include?( inherited )
expanded << inherited
expand_roles_into( [ inherited ], expanded )
end
end
expanded
end
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems