require "active_support/notifications" module ActiveSupport module Deprecation class << self # Whether to print a backtrace along with the warning. attr_accessor :debug # Returns the set behavior or if one isn't set, defaults to +:stderr+ def behavior @behavior ||= [DEFAULT_BEHAVIORS[:stderr]] end # Sets the behavior to the specified value. Can be a single value or an array. # # Available behaviors: # # [+:stderr+] Print deprecations to +$stderror+ # [+:log+] Send to +Rails.logger+ # [+:notify+] Instrument using +ActiveSupport::Notifications+ # [+:silence+] Do nothing # # Examples # # ActiveSupport::Deprecation.behavior = :stderr # ActiveSupport::Deprecation.behavior = [:stderr, :log] def behavior=(behavior) @behavior = Array(behavior).map { |b| DEFAULT_BEHAVIORS[b] || b } end end # Default warning behaviors per Rails.env. DEFAULT_BEHAVIORS = { :stderr => Proc.new { |message, callstack| $stderr.puts(message) $stderr.puts callstack.join("\n ") if debug }, :log => Proc.new { |message, callstack| logger = if defined?(Rails) && Rails.logger Rails.logger else require 'active_support/logger' ActiveSupport::Logger.new($stderr) end logger.warn message logger.debug callstack.join("\n ") if debug }, :notify => Proc.new { |message, callstack| ActiveSupport::Notifications.instrument("deprecation.rails", :message => message, :callstack => callstack) }, :silence => Proc.new { |message, callstack| } } end end