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Contents
module Hobo
module Model
module Lifecycles
class Transition < Struct.new(:lifecycle, :name, :start_states, :end_state, :on_transition, :options)
include Actions
def initialize(*args)
super
self.name = name.to_sym
start_states.each do |from|
state = lifecycle.states[from]
raise ArgumentError, "No such state '#{from}' in #{name} transition (#{lifecycle.model.name})" unless state
state.transitions_out << self
end
lifecycle.transitions << self
end
def extract_attributes(attributes)
model = lifecycle.model
params = options.fetch(:params, [])
allowed = params.dup
params.each do |p|
if (refl = model.reflections[p]) && refl.macro == :belongs_to
allowed << refl.primary_key_name.to_s
allowed << refl.options[:foreign_type] if refl.options[:polymorphic]
end
end
attributes & allowed
end
def change_state(record)
record.lifecycle.become(get_state(record, end_state))
end
def run!(record, user, attributes)
current_state = record.lifecycle.state_name
unless start_states.include?(current_state)
raise Hobo::Model::Lifecycles::LifecycleError, "Transition #{record.class}##{name} cannot be run from the '#{current_state}' state"
end
record.lifecycle.active_step = self
record.with_acting_user(user) do
prepare!(record, attributes)
if can_run?(record)
if change_state(record)
fire_event(record, on_transition)
end
else
raise Hobo::PermissionDeniedError
end
end
end
def parameters
options[:params] || []
end
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems