heartcombo--devise/lib/devise/mapping.rb

140 lines
4.5 KiB
Ruby

module Devise
# Responsible for handling devise mappings and routes configuration. Each
# resource configured by devise_for in routes is actually creating a mapping
# object. You can refer to devise_for in routes for usage options.
#
# The required value in devise_for is actually not used internally, but it's
# inflected to find all other values.
#
# map.devise_for :users
# mapping = Devise.mappings[:user]
#
# mapping.name #=> :user
# # is the scope used in controllers and warden, given in the route as :singular.
#
# mapping.as #=> "users"
# # how the mapping should be search in the path, given in the route as :as.
#
# mapping.to #=> User
# # is the class to be loaded from routes, given in the route as :class_name.
#
# mapping.modules #=> [:authenticatable]
# # is the modules included in the class
#
class Mapping #:nodoc:
attr_reader :singular, :plural, :path, :controllers, :path_names, :path_prefix
alias :name :singular
# Loop through all mappings looking for a map that matches with the requested
# path (ie /users/sign_in). If a path prefix is given, it's taken into account.
def self.find_by_path(path)
Devise.mappings.each_value do |mapping|
route = path.split("/")[mapping.segment_position]
return mapping if route && mapping.path == route.to_sym
end
nil
end
# Receives an object and find a scope for it. If a scope cannot be found,
# raises an error. If a symbol is given, it's considered to be the scope.
def self.find_scope!(duck)
case duck
when String, Symbol
return duck
when Class
Devise.mappings.each_value { |m| return m.name if duck <= m.to }
else
Devise.mappings.each_value { |m| return m.name if duck.is_a?(m.to) }
end
raise "Could not find a valid mapping for #{duck}"
end
def initialize(name, options) #:nodoc:
if as = options.delete(:as)
ActiveSupport::Deprecation.warn ":as is deprecated, please use :path instead."
options[:path] ||= as
end
if scope = options.delete(:scope)
ActiveSupport::Deprecation.warn ":scope is deprecated, please use :singular instead."
options[:singular] ||= scope
end
@plural = name.to_sym
@path = (options.delete(:path) || name).to_sym
@klass = (options.delete(:class_name) || name.to_s.classify).to_s
@singular = (options.delete(:singular) || name.to_s.singularize).to_sym
@path_prefix = "/#{options.delete(:path_prefix)}/".squeeze("/")
@controllers = Hash.new { |h,k| h[k] = "devise/#{k}" }
@controllers.merge!(options.delete(:controllers) || {})
@path_names = Hash.new { |h,k| h[k] = k.to_s }
@path_names.merge!(options.delete(:path_names) || {})
end
# Return modules for the mapping.
def modules
@modules ||= to.respond_to?(:devise_modules) ? to.devise_modules : []
end
# Gives the class the mapping points to.
# Reload mapped class each time when cache_classes is false.
def to
return @to if @to
klass = @klass.constantize
@to = klass if Rails.configuration.cache_classes
klass
end
def strategies
@strategies ||= STRATEGIES.values_at(*self.modules).compact.uniq.reverse
end
def routes
@routes ||= ROUTES.values_at(*self.modules).compact.uniq
end
# Keep a list of allowed controllers for this mapping. It's useful to ensure
# that an Admin cannot access the registrations controller unless it has
# :registerable in the model.
def allowed_controllers
@allowed_controllers ||= begin
canonical = CONTROLLERS.values_at(*self.modules).compact
@controllers.values_at(*canonical)
end
end
# Return in which position in the path prefix devise should find the as mapping.
def segment_position
self.path_prefix.count("/")
end
# Returns the raw path using path_prefix and as.
def full_path
path_prefix + path.to_s
end
def authenticatable?
@authenticatable ||= self.modules.any? { |m| m.to_s =~ /authenticatable/ }
end
# Create magic predicates for verifying what module is activated by this map.
# Example:
#
# def confirmable?
# self.modules.include?(:confirmable)
# end
#
def self.add_module(m)
class_eval <<-METHOD, __FILE__, __LINE__ + 1
def #{m}?
self.modules.include?(:#{m})
end
METHOD
end
end
end