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require 'rails/railtie'
module Rails
module Observers
class Railtie < ::Rails::Railtie
initializer "active_record.observer", :before => "active_record.set_configs" do |app|
ActiveSupport.on_load(:active_record) do
require "rails/observers/activerecord/active_record"
observers = app.config.active_record.delete(:observers)
self.observers = observers if observers
end
end
initializer "action_controller.caching.sweepers" do
ActiveSupport.on_load(:action_controller) do
require "rails/observers/action_controller/caching"
end
end
initializer "active_resource.observer" do |app|
ActiveSupport.on_load(:active_resource) do
require 'rails/observers/active_resource/observing'
prepend ActiveResource::Observing
end
end
config.after_initialize do |app|
begin
# Eager load `ActiveRecord::Base` to avoid circular references when
# loading a constant for the first time.
#
# E.g. loading a `User` model that references `ActiveRecord::Base`
# which calls `instantiate_observers` to instantiate a `UserObserver`
# which eventually calls `observed_class` thus constantizing `"User"`,
# the class we're loading. 💣💥
require "active_record/base"
rescue LoadError
end
ActiveSupport.on_load(:active_record) do
ActiveRecord::Base.instantiate_observers
# Rails 5.1 forward-compat. AD::R is deprecated to AS::R in Rails 5.
reloader = defined?(ActiveSupport::Reloader) ? ActiveSupport::Reloader : ActionDispatch::Reloader
reloader.to_prepare do
ActiveRecord::Base.instantiate_observers
end
end
ActiveSupport.on_load(:active_resource) do
self.instantiate_observers
# Rails 5.1 forward-compat. AD::R is deprecated to AS::R in Rails 5.
reloader = defined?(ActiveSupport::Reloader) ? ActiveSupport::Reloader : ActionDispatch::Reloader
reloader.to_prepare do
ActiveResource::Base.instantiate_observers
end
end
end
end
end
end
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