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ruby-on-rails - simple_fields_for 没有出现 [rails 4]

转载 作者:行者123 更新时间:2023-12-03 23:23:08 24 4
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我试图创建两个隐藏字段,一个显示没有问题,但另一个来自嵌套表单的没有

产品.rb

class Product < ActiveRecord::Base
has_many :product_options, dependent: :destroy
accepts_nested_attributes_for :product_options, allow_destroy: true, :reject_if => proc { |x| x[:option_name].blank? }
belongs_to :user
end

product_option.rb
class ProductOption < ActiveRecord::Base
belongs_to :product
end

products_controller.rb
class ProductsController < ActionController::Base
layout "application"

def index
@products = Product.all
@current_user = Client.find_by(id: session[:client])
if @current_user.redeemed == true
redirect_to root_path
end
end

def show
@product = Product.find(params[:id])
@product_option = @product.product_options.find(params[:id])
@current_user = Client.find_by(id: session[:client])
@current_user.update(:product_option => @product_option.option_name)
@current_user.update(:selected_product => @product.id)
render :nothing => true
end

private
def product_params
params.require(:product).permit(:name, :id, :position, :product_description, :product_image_type, :product_image, :product_detail, :product_option_id,
:product_options_attributes => [:id, :option_name, :ranking, :total_redeemed, :product_id])
end
end

_form.html.erb
<%= simple_form_for Product.new, :method => "post",:remote => true, :class => "item_prompt" do |f| %> 
<%= f.hidden_field :id, :class => 'product_id' %>
<%= f.simple_fields_for :product_options do |ff| %>
<%= ff.hidden_field :id, :class => 'product_option_id' %>
<% end %>
<%= f.submit "Yep!", :class => "yep ready_button confirm_button", :name => "confirm_button" %>
<% end %>

html输出
<form accept-charset="UTF-8" action="/products" class="simple_form new_product" data-remote="true" id="new_product" method="post" novalidate="novalidate">
<input class="product_id" id="product_id" name="id" type="hidden" value="240">
<input class="yep ready_button confirm_button" name="confirm_button" type="submit" value="Yep!">
<form>

最佳答案

我想通了,...问题是

fields_for 将遍历集合关联,渲染出与其中有项目一样多的次数,这意味着如果关联为空,则为 0 次

所以要解决我必须添加的问题

@product = Product.new
@product.product_options.build

到 Controller 中的索引操作。

关于ruby-on-rails - simple_fields_for 没有出现 [rails 4],我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26788432/

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