Ruby on rails 4 如何将许多相似的方法和视图组合成一个

我想将类似的方法和视图合并为一个，但仍然保留url名称，如下所示：

Home/recommends/categories/shopping
Home/recommends/categories/nightview
Home/recommends/categories/food
Home/recommends/categories/area

我不想在url中使用像

“？something=xyz”

这样的参数

在

routes.rb中

：

resources :recommends, only: :index do
  collection do
    resources :categories, only: :show, controller: 'recommends' do
      collection do
        get :food
        get :area
        get :shopping
        get :nightview
      end
    end
  end
end

在控制器中：

def food
  set_paginator
  @recommends = UserRecommend.where(category: "food").order('created_at desc').offset(@offset).limit(@limit).all
  @number_of_recommends = UserRecommend.where(category: "food").count
end

def area
  set_paginator
  @recommends = UserRecommend.where(category: "area").order('created_at desc').offset(@offset).limit(@limit).all
  @number_of_recommends = UserRecommend.where(category: "area").count
end

...

我认为：

food.html.slim
area.html.slim
shopping.slim
nightview.slim

它们使用相同的代码，只是在

h1

中使用不同的名称：

h1
  | Shopping ( or Area or Food... )
  = " (#{@number_of_recommends})"

= render partial: "layouts/paginator",
  locals: { total_items: @number_of_recommends, per_page: @limit, current_page: @page }

= render partial: "table", locals: { recommends: @recommends }

有人能帮我重构这段代码吗？

你可以（而且应该）有一条路线、一个动作和一个视图。关键是将URL的变量部分变成实际变量。您可以使用

第一，单一路线。如果您没有实际生成多个RESTful操作，则无需使用

资源

：

get "/recommends/categories/:category" => "categories#show"

您可以为

：类别
段添加允许的条件：

get "/recommends/categories/:category" => "categories#show", category: /food|area|shopping|nightview/

接下来，一个动作：

class CategoriesController < ApplicationController
  before_action :set_paginator

  def show
    # params[:category] is "food"/"area"/etc
    categories = UserRecommend.where(category: params[:category]).order('created_at desc')
    @recommends = categories.offset(@offset).limit(@limit)
    @number_of_recommends = categories.count
  end
end

我认为最好使用本地化来将<代码> PARAM[[类别] < /COD>转换为标题，这将给您更多的控制，而不是依赖于URL段的简单大写：
# app/views/categories/show.slim
h1
  = t params[:category]

以及：

# app/views/categories/show.slim
h1
  = t params[:category]

# config/locals/en.yml
en:
  categories:
    show:
      food: 'Food'
      area: 'Area'
      nightview: 'Night View'