Class: ConcertoTemplateScheduling::Engine

Inherits:
Rails::Engine
  • Object
show all
Defined in:
lib/concerto_template_scheduling/engine.rb

Instance Method Summary collapse

Instance Method Details

#plugin_info(plugin_info_class) ⇒ Object 



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# File 'lib/concerto_template_scheduling/engine.rb', line 10

def plugin_info(plugin_info_class)
  @plugin_info ||= plugin_info_class.new do
    
    # Make the engine's controller accessible at /template-scheduling
    add_route("template-scheduling", ConcertoTemplateScheduling::Engine)

    # Some code to run at app boot
    init do
      Rails.logger.info "ConcertoTemplateScheduling: Initialization code is running"
    end

    # show the schedule details alongside each screen

    add_controller_hook "ScreensController", :show, :before do
      @schedules = Schedule.where(:screen_id => @screen.id)
      # reject the schedules that specify templates that have been deleted
      @schedules.to_a.reject!{|s| s.template.nil?}
    end

    add_view_hook "ScreensController", :screen_details, :partial => "concerto_template_scheduling/screens/screen_link"

    # show that the template is in use
  
    add_controller_hook "TemplatesController", :show, :before do
      @schedules = Schedule.where(:template_id => @template.id)
    end

    add_view_hook "TemplatesController", :template_details, :partial => "concerto_template_scheduling/templates/in_use_by"

    # influence which template is the effective template for a screen
    # prepend these so that the EMS plugin can override them

    add_controller_hook "Screen", :frontend_display, [:before, :prepend => true] do
      # sets the template to the "effective" template
      schedules = Schedule.active.where(:screen_id => self.id)
      schedules.to_a.reject! {|s| !s.is_effective? }
      self.template = schedules.first.template if !schedules.empty?
    end

    add_controller_hook "Frontend::ContentsController", :index, [:after, :prepend => true]  do
      # sets the template to the "effective" template
      schedules = Schedule.active.where(:screen_id => @screen.id)
      schedules.to_a.reject! {|s| !s.is_effective? }
      @screen.template = schedules.first.template if !schedules.empty?
    end

    # delete schedules when a screen is deleted

    add_controller_hook "ScreensController", :destroy, :after do
      Schedule.destroy_all(:screen_id => @screen.id)
    end

    # indicate if a template has dependencies

    add_controller_hook "Template", :is_deletable, :after do
      @deletable = Schedule.where(:template_id => self.id).empty? if @deletable
    end        

    add_controller_hook "Template", :screen_dependencies, :after do
      @dependencies ||= []
      @dependencies << Schedule.where(:template_id => self.id).collect { |t| t.screen }
    end        

  end
end