houdini/app/models/concerns/object_event/model_extensions.rb

# frozen_string_literal: true

# License: AGPL-3.0-or-later WITH WTO-AP-3.0-or-later
# Full license explanation at https://github.com/houdiniproject/houdini/blob/master/LICENSE
module ObjectEvent::ModelExtensions
    extend ActiveSupport::Concern

    class_methods do
        
        # Adds the to_event method to a model. Requires `to_builder` method for creating
        # the Jbuilder object
        def object_eventable(prefix)
            class_eval <<-RUBY, __FILE__, __LINE__ + 1
                def object_prefix
                    :#{prefix.to_s}
                end
                

                def to_event(event_type, *expand)
                    Jbuilder.new do |event|
                        event.id "objevt_" + SecureRandom.alphanumeric(22)
                        event.object 'object_event'
                        event.type event_type
                        event.data do 
                            event.object to_builder(*expand)
                        end
                    end
                end

                def to_builder(*expand)
                    raise NotImplementedError.new("to_builder must be implemented in your model")
                end
            RUBY
        end
    end
end