Error raised : Arkency::CommandBus::UnregisteredHandler: Missing handler for Crm::RegisterCustomer about ecommerce

[andrzejkrzywda]

We have this file https://github.com/RailsEventStore/ecommerce/blob/master/ecommerce/crm/lib/crm.rb which registers the command handler for a command. Is it missing in your code?

[Ariharan2002]

But i required that too,
require "infra"
require_relative "crm/commands/promote_customer_to_vip"
require_relative "crm/commands/register_customer"
require_relative "crm/commands/assign_customer_to_order"

require_relative "crm/events/customer_promoted_to_vip"
require_relative "crm/events/customer_registered"
require_relative "crm/events/customer_assigned_to_order.rb"

require_relative "crm/customer_service"
require_relative "crm/customer"
require_relative "crm/order_service"
require_relative "crm/order"

module Crm
class Configuration

def call(event_store, command_bus)
  command_bus.register(RegisterCustomer, OnRegistration.new(event_store))
end

end
end
Is there any requirement needed for command handler registration

[andrzejkrzywda]

Can you show the code where you call this Configuration class?

[Ariharan2002]

lib/configuration.rb

frozen_string_literal: true

require_relative '../../bloggie/configuration'
require_relative '../../infra/lib/infra'
require_relative '../app/read_models/Topics/register_topic'

require_relative '../app/read_models/Topics/update_topic'

class Configuration
def call(event_store, command_bus)
enable_res_infra_event_linking(event_store)

enable_topic_read_model(event_store)
Bloggie::Configuration.new.call(event_store, command_bus)

end

private

def enable_res_infra_event_linking(event_store)
[
RailsEventStore::LinkByEventType.new,
RailsEventStore::LinkByCorrelationId.new,
RailsEventStore::LinkByCausationId.new
].each { |h| event_store.subscribe_to_all_events(h) }
end

def enable_topic_read_model(event_store)
Topics::Configuration.new.call(event_store)
end
end

bloggie/configuration.rb

frozen_string_literal: true

require_relative 'TopicSupport/lib/topic_support'
require_relative '../rails_application/app/read_models/Topics/register_topic'
require_relative '../rails_application/app/read_models/Topics/update_topic'
module Bloggie
class Configuration

def initialize
  super
end

def call(event_store, command_bus)
  configure_bounded_contexts
end

def configure_bounded_contexts
  event_store = Rails.configuration.event_store
  command_bus = Rails.configuration.command_bus

  [TopicSupport::Configuration.new].each { |c| c.call(event_store, command_bus) }
end

end
end

i made some mistakes in call then i fixed now its working,
Thank you @andrzejkrzywda

[andrzejkrzywda]

Cool, I'm glad it works now.

Feel free to ask in case of other questions.