app/controllers/repository_directories_controller.rb

class RepositoryDirectoriesController < InheritedResources::Base
  actions :new, :create

  helper_method :repository
  before_filter :check_write_permissions, only: [:new, :create]
  before_filter :check_read_permissions

  def create
    if resource.valid?
      resource.save
      render json: create_json_data, status: 201
    else
      render partial: 'form', status: 422
    end
  end

  protected

  def resource
    @repository_directory ||= RepositoryDirectory.new(params.merge(
      user: current_user))
  end

  def repository
    @repository ||= resource.repository
  end

  def create_json_data
    success_message = t('repository_directory.create', name: resource)
    success_message << " #{create_json_data_additional_text}"

    {
      text: success_message,
      link: {
        url: fancy_repository_path(repository, path: resource.path),
        text: resource.name,
      },
    }
  end

  def create_json_data_additional_text
    created_directories = resource.created_directories
    return if created_directories.size <= 1

    t('repository_directory.create_additional',
      directories: created_directories.map { |d| "\"#{d}\"" }.join(', '))
  end

  def check_read_permissions
    authorize! :show, repository
  end

  def check_write_permissions
    authorize! :write, repository
  end
end