Question

我正在尝试做person所做的事情，但是使用rails 5。

在我的应用中，我有两个控制器和三个型号。

我的两个控制器是OrdersController和ListingsController。我的三个模型是Order，Listing和User。

我正在尝试在我的OrdersController中的销售和购买页面上创建与用户相关的链接，该链接指向我#show中的ListingsController操作。

我在销售和购买页面上的链接如下所示：

<% @orders.each do |order| %>
  <tr>
    <td class="center"><%= link_to 'View The Game Your Sold', listing_path(@listing) %></td>
  </tr>
<% end %>

这是我的Order型号：

belongs_to :listing
belongs_to :buyer, class_name: "User"
belongs_to :seller, class_name: "User"

这是我的OrdersController：

class OrdersController < ApplicationController
  before_action :set_order, only: [:show, :edit, :update, :destroy]
  before_action :authenticate_user!

  def sales
    @orders = Order.all.where(seller: current_user).order("created_at DESC")
  end

  def purchases
    @orders = Order.all.where(buyer: current_user).order("created_at DESC")
  end

  # GET /orders/new
  def new
    @order = Order.new
    @listing = Listing.find(params[:listing_id])
  end
end

这是我的Listing型号：

belongs_to :user
has_many :orders
has_many :fullgames

def self.search(params)
  listings = all # for not existing params args
  listings = listings.where("name like ?", "%#{params[:name]}%") if params[:name]
  listings
end

这是我的ListingsController：

class ListingsController < ApplicationController
  before_action :set_listing, only: [:show, :edit, :update, :destroy]
  before_filter :authenticate_user!, only: [:seller, :new, :create, :edit, :update, :destroy]
  before_filter :check_user, only: [:edit, :update, :destroy]

  def seller
    @listings = Listing.where(user: current_user).order("created_at DESC")
  end

  # GET /listings
  # GET /listings.json
  def index
    @listings = Listing.all.order("created_at DESC").search(params).paginate(:page => params[:page], :per_page => 2)
  end

  # GET /listings/1
  # GET /listings/1.json
  def show
  end
end

这是我的User型号：

has_many :listings, dependent: :destroy
has_many :sales, class_name: "Order", foreign_key: "seller_id"
has_many :purchases, class_name: "Order", foreign_key: "buyer_id"

Answer 1

# Order Model
 class Order < ApplicationRecord
   scope :recent, -> { order("created_at DESC") }
 end

# ListingsController
class ListingsController < ApplicationController
  ...
  before_filter :authenticate_user!, only: [:show, :seller, :new, :create, :edit, :update, :destroy]

  # GET /listings/1
  # GET /listings/1.json
  def show
    @purchases = current_user.purchases.recent
    @sales = current_user.sales.recent
  end
end

# show.html.erb
# for purchases orders
<% @purchases.each do |purchase_order| %>
  <tr>
    <td class="center"><%= purchase_order %></td>
  </tr>
<% end %>

# for sales orders
<% @sales.each do |sale_order| %>
  <tr>
    <td class="center"><%= sale_order %></td>
  </tr>
<% end %>

如何链接到rails 5中的父关联？

1 个答案: