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Contents
# frozen_string_literal: true
# Include this module in your Phlex views to get access to the controller's instance variables. It
# provides an explicit interface for accessing controller instance variables from the view. Simply
# call `controller_attribute` with the name of any controller instance variable you want to access
# in your view.
#
# @example
# class Views::Users::Index < Views::Base
# controller_attribute :user_name
#
# def template
# h1 { @user_name }
# end
# end
#
# Options
# - `attr_reader:` - If set to `true`, an `attr_reader` will be defined for the given attributes.
# - `alias:` - If set, the given attribute will be aliased to the given alias value.
#
# NOTE: Phlexible::Rails::ActionController::ImplicitRender is required for this to work.
#
module Phlexible
module Rails
module ControllerAttributes
extend ActiveSupport::Concern
class UndefinedVariable < NameError
def initialize(name)
@variable_name = name
super "Attempted to expose controller attribute `#{@variable_name}`, but instance " \
'variable is not defined in the controller.'
end
end
included do
class_attribute :__controller_attributes__, instance_predicate: false, default: Set.new
end
class_methods do
def controller_attribute(*names, **kwargs)
self.__controller_attributes__ += names
return if kwargs.empty?
names.each do |name|
attr_reader name if kwargs[:attr_reader]
if kwargs[:alias]
if kwargs[:attr_reader]
alias_method kwargs[:alias], name
else
define_method(kwargs[:alias]) { instance_variable_get :"@#{name}" }
end
end
end
end
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems