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Contents
require_dependency "active_support/callbacks_ext"
# the events method is a developer's tool for visualizing the event order
# for a given card.
# For example, from a console you might run
#
# puts mycard.events :update
#
# to see the order of events that will be executed on mycard.
# The indention and arrows (^v) indicate event dependencies.
#
# Note: as of yet, the functionality is a bit rough. It does not display events
# that are called directly from within other events,
# and certain event requirements (like the presence of a 'current_act') may
# prevent events from showing up in the tree.
def events action
@action = action
events =
ActManager::Stage::STAGES.map { |stage| events_tree("#{stage}_stage") }
@action = nil
puts_events events
end
# private
def puts_events events, prefix="", depth=0
r = ""
depth += 1
events.each do |e|
space = " " * (depth * 2)
# FIXME: this is not right. before and around callbacks are processed in
# declaration order regardless of kind. not all befores then all arounds
e[:before] && r += puts_events(e[:before], space + "v ", depth)
e[:around] && r += puts_events(e[:around], space + "vv ", depth)
r += "#{prefix}#{e[:name]}\n"
e[:after] && r += puts_events(e[:after].reverse, space + "^ ", depth)
end
r
end
def events_tree filt
hash = { name: filt }
if respond_to? "_#{filt}_callbacks"
send("_#{filt}_callbacks").each do |callback|
next unless callback.applies? self
hash[callback.kind] ||= []
hash[callback.kind] << events_tree(callback.filter)
end
end
hash
end
Version data entries
5 entries across 5 versions & 1 rubygems