ruby-on-rails - DRY controllers and views in Rails

Question

Suppose, I have models Article and Category with HABTM relation. I can have different categories with names like mobile, desktop etc. I need list view for each category. For example /mobile path give me all Articles belongs to Category mobile, /desktop path give me all Articles belongs to category desktop and /articles path give me totally all Articles. What is the best way to organize it (controllers, views, routes)? For each category create controller? But it's not DRY...and categories may be added by user later...

Answer 1

ルート:

get 'category/:type' => 'categories#index'

コントローラ：

def index
  type = params[:type]


  ## fetch categories based on type
  categories = Category.where(type: type)
end

ここで確認する必要がある基本的なことは、ルートです。任意の数のカテゴリ タイプで機能するルートを 1 つだけ追加します

Answer 2

追加のコントローラーを作成する必要はありません。

class ArticlesController
  def index
    @articles = case params[:type]
    when 'mobile'
      # .. select mobile articles
    when 'desktop'
      # .. select desktop articles
    else
      Article.all
    end

    # ...
  end
end

次にroutes.rb

match "/mobile", controller: :articles, action: :index, type: 'mobile'
match "/desktop", controller: :articles, action: :index, type: 'desktop'

resources :articles