Class: Yes::Core::Aggregate::Dsl::MethodDefiners::CommandGroup::CanCommandGroup

Inherits:
Base
  • Object
show all
Defined in:
lib/yes/core/aggregate/dsl/method_definers/command_group/can_command_group.rb

Overview

Defines ‘aggregate.can_<group_name>?(payload = {})` and the `<group_name>_error` accessor on the aggregate class.

Mirrors Yes::Core::Aggregate::Dsl::MethodDefiners::Command::CanCommand but resolves the group’s GuardEvaluator class instead of a command’s.

Since:

  • 0.1.0

Instance Method Summary collapse

Methods inherited from Base

#initialize

Constructor Details

This class inherits a constructor from Yes::Core::Aggregate::Dsl::MethodDefiners::CommandGroup::Base

Instance Method Details

#call ⇒ Object

Since:

  • 0.1.0



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# File 'lib/yes/core/aggregate/dsl/method_definers/command_group/can_command_group.rb', line 15

def call
  can_method = :"can_#{@name}?"
  error_method = :"#{@name}_error"

  aggregate_class.attr_accessor error_method
  group_name = @name

  aggregate_class.define_method(can_method) do |payload = {}|
    cmd = command_utilities.build_group_command(group_name, payload)
    guard_evaluator_class = command_utilities.fetch_guard_evaluator_class_for_group(group_name)

    Yes::Core::CommandHandling::GuardRunner.new(self).call(
      cmd, group_name, guard_evaluator_class, skip_guards: false
    ).present?
  rescue Yes::Core::CommandHandling::GuardEvaluator::InvalidTransition,
         Yes::Core::CommandHandling::GuardEvaluator::NoChangeTransition,
         Yes::Core::Command::Invalid
    false
  end
end