openproject/app/cells/rails_cell.rb

class RailsCell < Cell::ViewModel
  include Escaped
  include ERB::Util
  include ApplicationHelper
  include ActionView::Helpers::TranslationHelper
  include SecureHeaders::ViewHelpers

  # Delegate to action_view
  delegate :content_for,
           :content_tag,
           :tag_options,
           to: :action_view

  delegate :request, to: :controller

  self.view_paths = ['app/cells/views']

  # We don't include ActionView::Helpers wholesale because
  # this would override Cell's own render method and
  # subsequently break everything.

  ##
  # Defines options for this cell which can be used within the cell's template.
  # Options are passed to the cell during the render call.
  #
  # @param names [Array<String> | Hash<String, Any>] Either a list of names for options whose
  #                                                  default value is empty or a hash mapping
  #                                                  option names to default values.
  def self.options(*names)
    default_values = {}

    if names.size == 1 && names.first.is_a?(Hash)
      default_values = names.first
      names = default_values.keys
    end

    names.each do |name|
      define_method(name) do
        options[name] || default_values[name]
      end
    end
  end

  def show
    # Set the _request from AS::Controller that doesn't get passed into the rails cell.
    # Workaround for when using middlewares such as SecureHeaders that relies on it,
    # but don't use the request method itself.
    @_request = request

    # Prepare the model for rendering
    prepare

    render
  end

  def prepare
    # Nothing to do by default
  end

  def controller
    context[:controller]
  end

  def action_view
    context[:action_view] || controller.view_context
  end

  def form_authenticity_token(*args)
    controller.send(:form_authenticity_token, *args)
  end

  def protect_against_forgery?
    controller.send(:protect_against_forgery?)
  end
end