Module: Spree::Core::StateMachines::Order::ClassMethods

Defined in:
lib/spree/core/state_machines/order.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#checkout_stepsObject


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# File 'lib/spree/core/state_machines/order.rb', line 201

def checkout_steps
  @checkout_steps ||= {}
end

#next_event_transitionsObject


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# File 'lib/spree/core/state_machines/order.rb', line 197

def next_event_transitions
  @next_event_transitions ||= []
end

#previous_statesObject

Returns the value of attribute previous_states.


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# File 'lib/spree/core/state_machines/order.rb', line 12

def previous_states
  @previous_states
end

#removed_transitionsObject


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# File 'lib/spree/core/state_machines/order.rb', line 213

def removed_transitions
  @removed_transitions ||= []
end

Instance Method Details

#add_transition(options) ⇒ Object


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# File 'lib/spree/core/state_machines/order.rb', line 209

def add_transition(options)
  next_event_transitions << { options.delete(:from) => options.delete(:to) }.merge(options)
end

#checkout_flow(&block) ⇒ Object


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# File 'lib/spree/core/state_machines/order.rb', line 17

def checkout_flow(&block)
  if block_given?
    @checkout_flow = block
    define_state_machine!
  else
    @checkout_flow
  end
end

#checkout_step_namesObject


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# File 'lib/spree/core/state_machines/order.rb', line 205

def checkout_step_names
  checkout_steps.keys
end

#define_state_machine!Object


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# File 'lib/spree/core/state_machines/order.rb', line 26

def define_state_machine!
  self.checkout_steps = {}
  self.next_event_transitions = []
  self.previous_states = [:cart]
  self.removed_transitions = []

  # Build the checkout flow using the checkout_flow defined either
  # within the Order class, or a decorator for that class.
  #
  # This method may be called multiple times depending on if the
  # checkout_flow is re-defined in a decorator or not.
  instance_eval(&checkout_flow)

  klass = self

  # To avoid multiple occurrences of the same transition being defined
  # On first definition, state_machines will not be defined
  state_machines.clear if respond_to?(:state_machines)
  state_machine :state, initial: :cart, use_transactions: false do
    klass.next_event_transitions.each { |state| transition(state.merge(on: :next)) }

    # Persist the state on the order
    after_transition do |order, transition|
      order.state = order.state
      order.state_changes.create(
        previous_state: transition.from,
        next_state:     transition.to,
        name:           'order',
        user_id:        order.user_id
      )
      order.save
    end

    event :cancel do
      transition to: :canceled, if: :allow_cancel?, from: :complete
    end

    event :return do
      transition to: :returned, from: [:complete, :awaiting_return], if: :all_inventory_units_returned?
    end

    event :resume do
      transition to: :resumed, from: :canceled, if: :canceled?
    end

    event :authorize_return do
      transition to: :awaiting_return, from: :complete
    end

    event :complete do
      transition to: :complete, from: klass.checkout_steps.keys.last
    end

    if states[:payment]
      event :payment_failed do
        transition to: :payment, from: :confirm
      end

      after_transition to: :complete, do: :add_payment_sources_to_wallet
      before_transition to: :payment, do: :add_default_payment_from_wallet
      before_transition to: :payment, do: :ensure_billing_address

      before_transition to: :confirm, do: :add_store_credit_payments

      # see also process_payments_before_complete below which needs to
      # be added in the correct sequence.
    end

    before_transition from: :cart, do: :ensure_line_items_present

    if states[:address]
      before_transition to: :address, do: :assign_default_user_addresses
      before_transition from: :address, do: :persist_user_address!
    end

    if states[:delivery]
      before_transition to: :delivery, do: :ensure_shipping_address
      before_transition to: :delivery, do: :create_proposed_shipments
      before_transition to: :delivery, do: :ensure_available_shipping_rates
      before_transition from: :delivery, do: :apply_shipping_promotions
    end

    before_transition to: :resumed, do: :ensure_line_item_variants_are_not_deleted
    before_transition to: :resumed, do: :validate_line_item_availability

    # Sequence of before_transition to: :complete
    # calls matter so that we do not process payments
    # until validations have passed
    before_transition to: :complete, do: :validate_line_item_availability
    before_transition to: :complete, do: :ensure_promotions_eligible
    before_transition to: :complete, do: :ensure_line_item_variants_are_not_deleted
    before_transition to: :complete, do: :ensure_inventory_units
    if states[:payment]
      before_transition to: :complete, do: :process_payments_before_complete
    end

    after_transition to: :complete, do: :finalize!
    after_transition to: :resumed,  do: :after_resume
    after_transition to: :canceled, do: :after_cancel

    after_transition from: any - :cart, to: any - [:confirm, :complete] do |order|
      order.recalculate
    end

    after_transition do |order, transition|
      order.logger.debug "Order #{order.number} transitioned from #{transition.from} to #{transition.to} via #{transition.event}"
    end

    after_failure do |order, transition|
      order.logger.debug "Order #{order.number} halted transition on event #{transition.event} state #{transition.from}: #{order.errors.full_messages.join}"
    end
  end
end

#find_transition(options = {}) ⇒ Object


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# File 'lib/spree/core/state_machines/order.rb', line 189

def find_transition(options = {})
  return nil if options.nil? || !options.include?(:from) || !options.include?(:to)

  next_event_transitions.detect do |transition|
    transition[options[:from].to_sym] == options[:to].to_sym
  end
end

#go_to_state(name, options = {}) ⇒ Object


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# File 'lib/spree/core/state_machines/order.rb', line 140

def go_to_state(name, options = {})
  checkout_steps[name] = options
  previous_states.each do |state|
    add_transition({ from: state, to: name }.merge(options))
  end
  if options[:if]
    previous_states << name
  else
    self.previous_states = [name]
  end
end

#insert_checkout_step(name, options = {}) ⇒ Object


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# File 'lib/spree/core/state_machines/order.rb', line 152

def insert_checkout_step(name, options = {})
  before = options.delete(:before)
  after = options.delete(:after) unless before
  after = checkout_steps.keys.last unless before || after

  cloned_steps = checkout_steps.clone
  cloned_removed_transitions = removed_transitions.clone
  checkout_flow do
    cloned_steps.each_pair do |key, value|
      go_to_state(name, options) if key == before
      go_to_state(key, value)
      go_to_state(name, options) if key == after
    end
    cloned_removed_transitions.each do |transition|
      remove_transition(transition)
    end
  end
end

#remove_checkout_step(name) ⇒ Object


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# File 'lib/spree/core/state_machines/order.rb', line 171

def remove_checkout_step(name)
  cloned_steps = checkout_steps.clone
  cloned_removed_transitions = removed_transitions.clone
  checkout_flow do
    cloned_steps.each_pair do |key, value|
      go_to_state(key, value) unless key == name
    end
    cloned_removed_transitions.each do |transition|
      remove_transition(transition)
    end
  end
end

#remove_transition(options = {}) ⇒ Object


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# File 'lib/spree/core/state_machines/order.rb', line 184

def remove_transition(options = {})
  removed_transitions << options
  next_event_transitions.delete(find_transition(options))
end