question_tags_controller.rb

class QuestionTagsController < ApplicationController
  def index
    @manager = QuestionTagsManager.new(params)
    respond_to do |format|
      format.html { set_breadcrumbs }
      format.json { render json: @manager.tags }
    end
  end

  def new
    @manager = QuestionTagsManager.new(params)
    set_breadcrumbs
  end

  def create
    @manager = QuestionTagsManager.new(params)

    if @manager.save_tag
      redirect_to(question_tags_path(@manager.question),
                  notice: I18n.t("tagging.created"))
    else
      set_breadcrumbs
      render(action: "new")
    end
  end

  def edit
    @manager = QuestionTagsManager.new(params)
    set_breadcrumbs
  end

  def update
    @manager = QuestionTagsManager.new(params)

    if @manager.update_tag(params[:tag])
      redirect_to(question_tags_path(@manager.question),
                  notice: I18n.t("tagging.updated"))
    else
      set_breadcrumbs
      render(:edit)
    end
  end

  def destroy
    @manager = QuestionTagsManager.new(params)
    @manager.destroy_tag(params.slice(:orphan))

    redirect_to(question_tags_path(@manager.question),
                notice: I18n.t("tagging.destroyed"))
  end

  private

  def set_breadcrumbs
    home_breadcrumb
    project_breadcrumb
    task_breadcrumb
    question_breadcrumb
  end

  def project_breadcrumb
    add_breadcrumb(label: @manager.project_title,
                   link: project_path(@manager.project_id),
                   icon: "icon_project")
  end

  def task_breadcrumb
    add_breadcrumb(label: @manager.task_title, link: task_url,
                   icon: "icon_task")
  end

  def task_url
    params = [@manager.project_id, @manager.task_id]
    {
      "survey" => project_responses_path(*params),
      "discussion" => project_posts_path(*params)
    }.fetch(@manager.task_type)
  end

  def question_breadcrumb
    add_breadcrumb(label: @manager.question_summary,
                   link: question_tags_path(@manager.question_id),
                   icon: "icon_tag")
  end
end