ActiveRecord::NoTouching
讓你有選擇性的可以禁用掉touch椭住，在no_touching的block內(nèi)慕爬。
可以使用ActiveBase::Record.no_touching也可以執(zhí)行具體的Model(只針對這個具體的model的對象no_touching)认烁。在執(zhí)行完block之后會將推到klasses里的klass出棧。
# frozen_string_literal: true
module ActiveRecord
# = Active Record No Touching
module NoTouching
extend ActiveSupport::Concern
module ClassMethods
# Lets you selectively disable calls to +touch+ for the
# duration of a block.
#
# ==== Examples
# ActiveRecord::Base.no_touching do
# Project.first.touch # does nothing
# Message.first.touch # does nothing
# end
#
# Project.no_touching do
# Project.first.touch # does nothing
# Message.first.touch # works, but does not touch the associated project
# end
#
def no_touching(&block)
NoTouching.apply_to(self, &block)
end
end
class << self
def apply_to(klass) #:nodoc:
klasses.push(klass)
yield
ensure
klasses.pop
end
def applied_to?(klass) #:nodoc:
klasses.any? { |k| k >= klass }
end
private
def klasses
Thread.current[:no_touching_classes] ||= []
end
end
# Returns +true+ if the class has +no_touching+ set, +false+ otherwise.
#
# Project.no_touching do
# Project.first.no_touching? # true
# Message.first.no_touching? # false
# end
#
def no_touching?
NoTouching.applied_to?(self.class)
end
def touch_later(*) # :nodoc:
super unless no_touching?
end
def touch(*) # :nodoc:
super unless no_touching?
end
end
end
