我正在做电子商务。我的产品有很多产品选择，同时它们只有一个变体。我尝试使视图创建产品可以选择添加块，其中显示模型的字段以及与之关联的变体的更改。问题是当我去编辑带有变体的产品，并删除一个或两个，或者你想要的数量，而不是删除。
产品控制器
class ProductsController < ApplicationController
before_action :set_product, only: [:show, :edit, :update, :destroy]
before_action :authenticate_admin_user!, only: [:new, :create, :edit, :update, :destroy]
# GET /products
# GET /products.json
def index
if admin_user_signed_in?
@authenticate = true
else
@authenticate = false
end
@products = Product.order(:index) # si vamos a todos los productos sin buscar nada
if params[:search] # si hay parametro de busqueda
@products = Product.where("name LIKE ?", "%#{params[:search]}%") # buscamos todos los productos que tengan el mismo nombre
if @products.length < 1 # si no hay al menos uno devolvemos todos los productos
@products = Product.all
end
end
end
# GET /products/1
# GET /products/1.json
def show
if admin_user_signed_in?
@authenticate = true
else
@authenticate = false
end
end
# GET /products/new
def new
@product = Product.new
end
# GET /products/1/edit
def edit
end
# POST /products
# POST /products.json
def create
@product = Product.new(product_params)
respond_to do |format|
if @product.save
format.html { redirect_to @product}
format.json { render :show, status: :created, location: @product }
else
format.html { render :new }
format.json { render json: @product.errors, status: :unprocessable_entity }
end
end
end
# PATCH/PUT /products/1
# PATCH/PUT /products/1.json
def update
products = Product.order(:index)
indexOld = Product.where(:name => @product['name'])[0]['index'].to_i
indexNew = product_params['index'].to_i # el producto que se va a actualizar
if indexOld != indexNew
for i in (indexNew - 1..indexOld - 1) # el indice nuevo simpre va a ser menor que el indice viejo
puts 'salida:'
puts Product.find(products[i].id).update(:index => (products[i]['index'].to_i + 1).to_s) # aumento en uno el indice del primer elemento a mover
end
end
respond_to do |format|
if @product.update(product_params)
format.html { redirect_to @product}
format.json { render :show, status: :ok, location: @product }
else
format.html { render :edit }
format.json { render json: @product.errors, status: :unprocessable_entity }
end
end
end
# DELETE /products/1
# DELETE /products/1.json
def destroy
index = @product.index
products = Product.order(:index)
products.each do |p|
if p.index > index
p.update(:index => p.index - 1)
p.save
end
end
DetailOrder.where(:product_id => @product.id).each do |detail|
detail.destroy
Order.find(detail.order_id).destroy
end
@product.destroy
respond_to do |format|
format.html { redirect_to products_url }
format.json { head :no_content }
end
end
产品形式
= form_for @product, html: { multipart: true } do |f|
.row
.form-group.col-lg-6
.field
= f.file_field :image1
.row
.form-group.col-lg-6
.field
= f.file_field :image2
-if action_name == 'new'
- if Product.order(:index).length > 0
- index = Product.order(:index).last['index']
= f.number_field :index, value: index + 1,:class => 'disp-none'
- else
= f.number_field :index, value: 1,:class => 'disp-none'
-else
.row
.form-group.col-lg-6
.field
= f.number_field :index, :placeholder => 'Indice', value: @product.index, max: Product.order(:index).last['index'],:class => 'form-control input-border-left'
.row
.form-group.col-lg-6
.field
= f.number_field :stock, :placeholder => 'Stock', :class => 'form-control input-border-left'
.row
.form-group.col-lg-6
.field
= f.text_field :name, :placeholder => 'Nombre', :class => 'form-control input-border-left'
.row
.form-group.col-lg-6
.field
= f.text_area :description, :placeholder => 'Descripcion', :class => 'form-control input-border-left'
.row
.form-group.col-lg-6
.field
= f.number_field :price, :placeholder => 'Precio a mostrar', :class => 'form-control input-border-left'
.row
.form-group.col-lg-6
.field
= f.label :Estado
%br/
= f.select :state, options_for_select(['Disponible', 'No disponible']), {}, {class: 'form-control input-border-left'}
.row
.form-group.col-lg-6
.field
= f.label :Envio
%br/
= f.check_box :shippingInside
.row
.form-group.col-lg-6
.field
= f.text_field :priceComparison, :placeholder => 'Precio anterior', :class => 'form-control input-border-left'
.row
.form-group.col-lg-6
.field
= f.label :vendor_id
%br/
= f.select :vendor_id, Vendor.all.collect { |vendor| [vendor.name, vendor.id] }, {}, {class: 'form-control input-border-left'}
.row
.form-group.col-lg-6
.field
= f.label :category_id
%br/
= f.select :category_id, Category.all.collect { |category| [category.name, category.id] }, {}, {class: 'form-control input-border-left'}
.row
.form-group.col-lg-6
.field
= f.label :Oferta
%br/
= f.check_box :offer
.row
.form-group.col-lg-6
.field
= f.text_field :nameVariants, :placeholder => 'Nombre para variantes', :class => 'form-control input-border-left'
.row
= f.fields_for :options_products do |op|
= render 'options_product_field', f: op
= link_to_add_association 'Agregar variante', f, :options_products
%br/
.actions
= f.submit "Enviar", :class => 'button btn btn-primary bold'
产品型号
class Product < ActiveRecord::Base
#relations
belongs_to :category
belongs_to :vendor
has_many :options_products, :dependent => :destroy
#accepts
accepts_nested_attributes_for :options_products, allow_destroy: true
#validations
validates :name, presence:true
validates :name, uniqueness:true
validates :state, presence:true
validates :category_id, presence:true
validates :vendor_id, presence:true
has_attached_file :image1,
styles: {large: "600x4600>", medium: "300x300>", thumb: "150x150#" }
validates_attachment_content_type :image1,
content_type: /\Aimage\/.*\z/
has_attached_file :image2,
styles: {large: "600x4600>", medium: "300x300>", thumb: "150x150#" }
validates_attachment_content_type :image2,
content_type: /\Aimage\/.*\z/
end
选项产品型号
class OptionsProduct < ActiveRecord::Base
belongs_to :product
has_one :variant, :dependent => :destroy
accepts_nested_attributes_for :variant, allow_destroy: true
end
变体模型
class Variant < ActiveRecord::Base
belongs_to :options_product
has_attached_file :image,
styles: {large: "600x4600>", medium: "300x300>", thumb: "150x150#" }
validates_attachment_content_type :image,
content_type: /\Aimage\/.*\z/
end
添加和删除字段的脚本
$(document).on 'ready page:load', ->
$('form').on 'click', '.remove_field', (event) ->
$(this).prev('input[type=hidden]').val('1')
$(this).closest('fieldset').hide()
event.preventDefault()
$('form').on 'click', '.add_field', (event) ->
time = new Date().getTime()
regular_expression = new RegExp($(this).data('id'), 'g')
$(this).before($(this).data('fields').replace(regular_expression, time))
event.preventDefault()