diff options
Diffstat (limited to 'railties/lib/rails/deprecation.rb')
-rw-r--r-- | railties/lib/rails/deprecation.rb | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/railties/lib/rails/deprecation.rb b/railties/lib/rails/deprecation.rb new file mode 100644 index 0000000000..71adcd61f4 --- /dev/null +++ b/railties/lib/rails/deprecation.rb @@ -0,0 +1,39 @@ +require "active_support/string_inquirer" +require "active_support/basic_object" + +module Rails + module Initializer + def self.run(&block) + klass = Class.new(Rails::Application) + klass.instance_exec(klass.config, &block) + klass.initialize! + end + end + + class DeprecatedConstant < ActiveSupport::BasicObject + def self.deprecate(old, new) + constant = self.new(old, new) + eval "::#{old} = constant" + end + + def initialize(old, new) + @old, @new = old, new + @target = ::Kernel.eval "proc { #{@new} }" + @warned = false + end + + def method_missing(meth, *args, &block) + ::ActiveSupport::Deprecation.warn("#{@old} is deprecated. Please use #{@new}") unless @warned + @warned = true + + target = @target.call + if target.respond_to?(meth) + target.send(meth, *args, &block) + else + super + end + end + end + + DeprecatedConstant.deprecate("RAILS_CACHE", "::Rails.cache") +end |