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После оформления заказа у нас есть форма для заполнения данными от пользователя, если не заполнять, мы представляем ошибки, после заполнения данных, если мы нажмем «Разместить заказ», то предположим, что это будет обновление базы данных, но все данные исчезают из формы и отображают ошибки, как в первый раз без данных.agile web development 4 с рельсами 4 форма заказа
Вот мой код:
/app/views/carts/_cart.html.erb:
<h2>Your Cart</h2>
<table>
<%= render(cart.line_items) %>
<tr class="total_line">
<td colspan="2">Total</td>
<td class="total_cell"><%= number_to_currency(cart.total_price) %></td>
</tr>
</table>
<!-- START_HIGHLIGHT -->
<%= button_to "Checkout", new_order_path, method: :get %>
<!-- END_HIGHLIGHT -->
<%= button_to 'Empty cart', cart, method: :delete,
data: { confirm: 'Are you sure?' } %>
/app/controllers/orders_controller.rb:
class OrdersController < ApplicationController
include CurrentCart
before_action :set_cart, only: [:new, :create]
before_action :set_order, only: [:show, :edit, :update, :destroy]
# GET /orders
# GET /orders.json
def index
@orders = Order.all
end
# GET /orders/1
# GET /orders/1.json
def show
end
# GET /orders/new
def new
if @cart.line_items.empty?
redirect_to store_url, notice: "Your cart is empty"
return
end
@order = Order.new
end
# GET /orders/1/edit
def edit
end
# POST /orders
# POST /orders.json
def create
@order = Order.new(order_params)
@order.add_line_items_from_cart(@cart)
respond_to do |format|
if @order.save
Cart.destroy(session[:cart_id])
session[:cart_id] = nil
format.html { redirect_to store_url, notice:
'Thank you for your order.' }
format.json { render action: 'show', status: :created,
location: @order }
else
format.html { render action: 'new' }
format.json { render json: @order.errors,
status: :unprocessable_entity }
end
end
end
# PATCH/PUT /orders/1
# PATCH/PUT /orders/1.json
def update
respond_to do |format|
if @order.update(order_params)
format.html { redirect_to @order, notice: 'Order was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: 'edit' }
format.json { render json: @order.errors, status: :unprocessable_entity }
end
end
end
# DELETE /orders/1
# DELETE /orders/1.json
def destroy
@order.destroy
respond_to do |format|
format.html { redirect_to orders_url }
format.json { head :no_content }
end
end
private
# Use callbacks to share common setup or constraints between actions.
def set_order
@order = Order.find(params[:id])
end
# Never trust parameters from the scary internet, only allow the white list through.
def order_params
params.require(:order).permit(:name, :address, :email, :pay_type)
end
#...
end
/Приложение/views/orders/new.html.erb:
<div class="depot_form">
<fieldset>
<legend>Please Enter Your Details</legend>
<%= render 'form' %>
</fieldset>
</div>
/app/views/orders/_form.html.erb:
<%= form_for(@order) do |f| %>
<% if @order.errors.any? %>
<div id="error_explanation">
<h2><%= pluralize(@order.errors.count, "error") %>
prohibited this order from being saved:</h2>
<ul>
<% @order.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
<div class="field">
<%= f.label :name %><br>
<!-- START_HIGHLIGHT -->
<%= f.text_field :name, size: 40 %>
<!-- END_HIGHLIGHT -->
</div>
<div class="field">
<%= f.label :address %><br>
<!-- START_HIGHLIGHT -->
<%= f.text_area :address, rows: 3, cols: 40 %>
<!-- END_HIGHLIGHT -->
</div>
<div class="field">
<%= f.label :email %><br>
<!-- START_HIGHLIGHT -->
<%= f.email_field :email, size: 40 %>
<!-- END_HIGHLIGHT -->
</div>
<div class="field">
<%= f.label :pay_type %><br>
<!-- START_HIGHLIGHT -->
<%= f.select :pay_type, Order::PAYMENT_TYPES,
prompt: 'Select a payment method' %>
<!-- END_HIGHLIGHT -->
</div>
<div class="actions">
<!-- START_HIGHLIGHT -->
<%= f.submit 'Place Order' %>
<!-- END_HIGHLIGHT -->
</div>
<% end %>
/app/models/order.rb:
class Order < ActiveRecord::Base
PAYMENT_TYPES = [ "Check", "Credit card", "Purchase order" ]
has_many :line_items, dependent: :destroy
# ...
validates :name, :address, :email, presence: true
validates :pay_type, inclusion: PAYMENT_TYPES
end
/app/models/line_item.rb:
class LineItem < ActiveRecord::Base
belongs_to :order
belongs_to :product
belongs_to :cart
def total_price
product.price * quantity
end
end