A Lo-Fi View Model/Presenter Base Class for Rails Apps

_view_model.rb

# app/model/view/view_model.rb
# A base class for other view models (a.k.a., presenters)
module View
  class ViewModel < SimpleDelegator
    BUILD_DEFAULT_CONTEXT = -> { View::DefaultViewContext.new }

    def initialize(model, view_context: BUILD_DEFAULT_CONTEXT.call)
      @view_context = view_context
      super(model)
    end

    protected

    def source
      __getobj__
    end

    private

    attr_reader :view_context

    alias_method :h, :view_context

    def t(*args)
      h.translate(*args)
    end
  end
end

default_view_context.rb

# app/models/view/default_view_context.rb
module View
  class DefaultViewContext < ActionView::Base
    include Rails.application.routes.url_helpers
    include ApplicationHelper

    def initialize()
      super(ActionController::Base.view_paths)
    end
  end
end