Question

我正在建立一个诗歌网站。有两种不同类型的诗歌：著名的或业余的。

我构建了CRUD函数以显示所有诗歌（著名的和业余的，没有区别的），并且按预期工作（请参见下面的PoetrisController代码）。

现在，我想让用户选择是否只看业余诗歌或著名诗歌。基本上，用户单击导航栏中的链接“ Amateur”或“ Famous”，然后将其重定向到仅列出业余或著名诗歌的新页面。

我的问题是：我应该创建另一个控制器（例如PoetriesFamousController）并在其中创建索引函数以仅显示著名的诗歌，还是可以使用已有的PoetriesController如果用户单击导航栏中的链接，仅显示“著名诗歌”？

PoetriesController：

 class PoetriesController < ApplicationController
 skip_after_action :verify_authorized, only: [:home, :about, :newsletter, :disclaimer, :new, :create]

  skip_before_action :authenticate_user!, only: [:home, :about, :newsletter, :disclaimer, :new, :create]

  before_action :set_poetry, only: [:show, :edit, :update, :destroy,]
  before_action :authenticate_user!, except: [:index, :amateur_poetries]

  def index
    if params[:search]
      @poetries = policy_scope(Poetry).search(params[:search]).order("created_at DESC").limit(30)
    else
      @poetries = policy_scope(Poetry).order("RANDOM()").limit(30)
    end
  end


  def show
    authorize @poetry
  end

  def new
    @poetry = Poetry.new
  end

  def create
    Poetry.create(poetry_params)
    redirect_to poetries_path
  end

  def edit
    authorize @poetry
  end

  def update
    @poetry.save
    redirect_to poetry_path(@poetry)
  end

  def destroy
    @poetry.destroy
    redirect_to poetries_path
  end



  private

  def poetry_params
    params.require(:poetry).permit(:title, :author, :body, :poster, :country)
  end

  def set_poetry
    @poetry = Poetry.find(params[:id])
  end
end

Poetries.rb

class Poetry < ApplicationRecord
  def self.search(search)
    where("lower(title) LIKE ? OR lower(author) LIKE ? OR lower(country) LIKE ? OR lower(born) LIKE ?", "%#{search}%", "%#{search}%", "%#{search}%", "%#{search}%")
  end
end

Routes.rb

  get 'poetries', to: 'poetries#index', as: :poetries
  get "poetries/new", to: "poetries#new"
  post   "poetries", to: "poetries#create"
  get "poetries/:id/edit", to: "poetries#edit"
  patch "poetries/:id", to: "poetries#update"
  get 'poetries/:id', to: 'poetries#show', as: :poetry
  delete "poetries/:id", to: "poetries#destroy"

Answer 1

最简单的事情是向控制器添加两个动作。

def famous
  @poetries = #get the famous ones
  render :index
end
def amateur
  @poetries = #get the amateur ones
  render :index
 end

然后更新您的路线

 get 'poetries', to: 'poetries#index', as: :poetries
 get 'poetries/famous', to: 'poetries#famous'
 get 'poetries/amateur', to: 'poetries#amateur
 # rest of the routes

Answer 2

这是您解决问题的一些主意

您认为（示例示例）

poetries type: 
<%= select_tag :poetries_type, options_for_select(["Famous","Amateur"]), include_blank: true, :class => 'form-control'  %>

在您的控制器中

def index
  if params[:search]
    if params[:poetries_type] == "Famous"
      @poetries = Poetry.famous.search(params[:search]).order("created_at DESC").limit(30)
    elsif params[:poetries_type] == "Amateur"
      @poetries = Poetry.amateur.search(params[:search]).order("created_at DESC").limit(30)
    else
      @poetries = Poetry.search(params[:search]).order("created_at DESC").limit(30)
    end
  else
    @poetries = policy_scope(Poetry).order("RANDOM()").limit(30)
  end
end

Poetries.rb，为著名的业余爱好者添加两个范围

def self.amateur
  where("poster != ?","Admin")
end 

def self.famous
  where("poster = ?","Admin")
end

显示索引中具有特定参数的项目

2 个答案: