我想将类似的方法和视图合并为一个，但仍保留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"?something=xyz"在url中使用参数。
在routes.rb：
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
...
在意见上，我有：
food.html.slim
area.html.slim
shopping.slim
nightview.slim
哪些使用相同的代码，只是在中使用不同的名称h1：
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 }
谁能帮我重构此代码？
您可以（并且应该）拥有一条路线，一个动作和一个视图。关键是使URL的可变部分成为实际的变量。您可以使用动态细分进行此操作。
首先，一条路线。resources如果您实际上没有生成多个RESTful动作，则无需使用：
get "/recommends/categories/:category" => "categories#show"
您可以在:category细分中允许的条件上添加条件：
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
最后，一个视图：
# app/views/categories/show.slim
h1
= params[:category].capitalize
= " (#{@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 }
我认为使用本地化将变成params[:category]标题更好，这将给您更多的控制权，而不是依赖于URL段的简单大写：
# app/views/categories/show.slim
h1
= t params[:category]
和：
# config/locals/en.yml
en:
categories:
show:
food: 'Food'
area: 'Area'
nightview: 'Night View'
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我来说两句