class ActiveSupport::Callbacks::Filters::Around

Public Class Methods

build(next_callback, user_callback, user_conditions, chain_config) click to toggle source
# File lib/active_support/callbacks.rb, line 268
def self.build(next_callback, user_callback, user_conditions, chain_config)
  if chain_config.key?(:terminator) && user_conditions.any?
    halting_and_conditional(next_callback, user_callback, user_conditions)
  elsif chain_config.key? :terminator
    halting(next_callback, user_callback)
  elsif user_conditions.any?
    conditional(next_callback, user_callback, user_conditions)
  else
    simple(next_callback, user_callback)
  end
end

Private Class Methods

conditional(next_callback, user_callback, user_conditions) click to toggle source
# File lib/active_support/callbacks.rb, line 317
def self.conditional(next_callback, user_callback, user_conditions)
  lambda { |env|
    target = env.target
    value  = env.value

    if user_conditions.all? { |c| c.call(target, value) }
      user_callback.call(target, value) {
        env = next_callback.call env
        env.value
      }
      env
    else
      next_callback.call env
    end
  }
end
halting(next_callback, user_callback) click to toggle source
# File lib/active_support/callbacks.rb, line 299
def self.halting(next_callback, user_callback)
  lambda { |env|
    target = env.target
    value  = env.value

    if env.halted
      next_callback.call env
    else
      user_callback.call(target, value) {
        env = next_callback.call env
        env.value
      }
      env
    end
  }
end
halting_and_conditional(next_callback, user_callback, user_conditions) click to toggle source
# File lib/active_support/callbacks.rb, line 280
def self.halting_and_conditional(next_callback, user_callback, user_conditions)
  lambda { |env|
    target = env.target
    value  = env.value
    halted = env.halted

    if !halted && user_conditions.all? { |c| c.call(target, value) }
      user_callback.call(target, value) {
        env = next_callback.call env
        env.value
      }
      env
    else
      next_callback.call env
    end
  }
end
simple(next_callback, user_callback) click to toggle source
# File lib/active_support/callbacks.rb, line 335
def self.simple(next_callback, user_callback)
  lambda { |env|
    user_callback.call(env.target, env.value) {
      env = next_callback.call env
      env.value
    }
    env
  }
end