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Contents
module Disposable::Twin::Changed
class Changes < Hash
def changed?(name=nil)
return true if name.nil? and values.find { |val| val == true } # TODO: this could be speed-improved, of course.
!! self[name.to_s]
end
end
def changed?(*args) # not recommended for external use?
changed.changed?(*args)
end
# FIXME: can we make #changed the only public concept? so we don't need to find twice?
# this is usually called only once in Sync::SkipUnchanged, per twin.
def changed
_find_changed_twins!(@_changes)
@_changes
end
private
def initialize(model, *args)
super # Setup#initialize.
@_changes = Changes.new # override changed from initialize.
end
def _changed
@_changes ||= Changes.new # FIXME: why do we need to re-initialize here?
end
def write_property(name, value, dfn)
old_value = field_read(name)
super.tap do
_changed[name.to_s] = old_value != value
end
end
def _find_changed_twins!(changes) # FIXME: this will change soon. don't touch.
schema.each(twin: true) do |dfn|
next unless twin = send(dfn.getter)
next unless twin.changed?
changes[dfn.name] = true
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems