diff options
Diffstat (limited to 'activesupport/lib/active_support/callbacks.rb')
| -rw-r--r-- | activesupport/lib/active_support/callbacks.rb | 41 |
1 files changed, 23 insertions, 18 deletions
diff --git a/activesupport/lib/active_support/callbacks.rb b/activesupport/lib/active_support/callbacks.rb index e5dbe214b4..24c702b602 100644 --- a/activesupport/lib/active_support/callbacks.rb +++ b/activesupport/lib/active_support/callbacks.rb @@ -71,25 +71,28 @@ module ActiveSupport # order. # # If the callback chain was halted, returns +false+. Otherwise returns the - # result of the block, nil if no callbacks have been set, or +true+ + # result of the block, +nil+ if no callbacks have been set, or +true+ # if callbacks have been set but no block is given. # # run_callbacks :save do # save # end def run_callbacks(kind, &block) - cbs = send("_#{kind}_callbacks") - if cbs.empty? - yield if block_given? + send "_run_#{kind}_callbacks", &block + end + + private + + def _run_callbacks(callbacks, &block) + if callbacks.empty? + block.call if block else - runner = cbs.compile + runner = callbacks.compile e = Filters::Environment.new(self, false, nil, block) runner.call(e).value end end - private - # A hook invoked every time a before callback is halted. # This can be overridden in AS::Callback implementors in order # to provide better debugging/logging. @@ -416,15 +419,8 @@ module ActiveSupport # Procs:: A proc to call with the object. # Objects:: An object with a <tt>before_foo</tt> method on it to call. # - # All of these objects are compiled into methods and handled - # the same after this point: - # - # Symbols:: Already methods. - # Strings:: class_eval'd into methods. - # Procs:: using define_method compiled into methods. - # Objects:: - # a method is created that calls the before_foo method - # on the object. + # All of these objects are converted into a lambda and handled + # the same after this point. def make_lambda(filter) case filter when Symbol @@ -563,7 +559,7 @@ module ActiveSupport # This is used internally to append, prepend and skip callbacks to the # CallbackChain. def __update_callbacks(name) #:nodoc: - ([self] + ActiveSupport::DescendantsTracker.descendants(self)).reverse.each do |target| + ([self] + ActiveSupport::DescendantsTracker.descendants(self)).reverse_each do |target| chain = target.get_callbacks name yield target, chain.dup end @@ -573,7 +569,7 @@ module ActiveSupport # # set_callback :save, :before, :before_meth # set_callback :save, :after, :after_meth, if: :condition - # set_callback :save, :around, ->(r, &block) { stuff; result = block.call; stuff } + # set_callback :save, :around, ->(r, block) { stuff; result = block.call; stuff } # # The second arguments indicates whether the callback is to be run +:before+, # +:after+, or +:around+ the event. If omitted, +:before+ is assumed. This @@ -723,12 +719,21 @@ module ActiveSupport # define_callbacks :save, scope: [:name] # # would call <tt>Audit#save</tt>. + # + # NOTE: +method_name+ passed to `define_model_callbacks` must not end with + # `!`, `?` or `=`. def define_callbacks(*names) options = names.extract_options! names.each do |name| class_attribute "_#{name}_callbacks" set_callbacks name, CallbackChain.new(name, options) + + module_eval <<-RUBY, __FILE__, __LINE__ + 1 + def _run_#{name}_callbacks(&block) + _run_callbacks(_#{name}_callbacks, &block) + end + RUBY end end |