我有3个型号：报价,客户和项目.每个报价都有一个客户和一个项目.当我按下提交按钮时,我想在各自的表格中创建新报价,新客户和新项目.我已经查看了其他问题和轨道广播,要么它们不适用于我的情况,要么我不知道如何实现它们.
quote.rb
class Quote < ActiveRecord::Base attr_accessible :quote_number has_one :customer has_one :item end
customer.rb
class Customer < ActiveRecord::Base attr_accessible :firstname,:lastname #unsure of what to put here #a customer can have multiple quotes,so would i use has_many or belongs_to? belongs_to :quote end
item.rb的
class Item < ActiveRecord::Base attr_accessible :name,:description #also unsure about this #each item can also be in multiple quotes belongs_to :quote
quotes_controller.rb
class QuotesController < ApplicationController
def index
@quote = Quote.new
@customer = Customer.new
@item = item.new
end
def create
@quote = Quote.new(params[:quote])
@quote.save
@customer = Customer.new(params[:customer])
@customer.save
@item = Item.new(params[:item])
@item.save
end
end
items_controller.rb
class ItemsController < ApplicationController
def index
end
def new
@item = Item.new
end
def create
@item = Item.new(params[:item])
@item.save
end
end
customers_controller.rb
class CustomersController < ApplicationController
def index
end
def new
@customer = Customer.new
end
def create
@customer = Customer.new(params[:customer])
@customer.save
end
end
我的报价单/ new.html.erb
<%= form_for @quote do |f| %>
<%= f.fields_for @customer do |builder| %>
<%= label_tag :firstname %>
<%= builder.text_field :firstname %>
<%= label_tag :lastname %>
<%= builder.text_field :lastname %>
<% end %>
<%= f.fields_for @item do |builder| %>
<%= label_tag :name %>
<%= builder.text_field :name %>
<%= label_tag :description %>
<%= builder.text_field :description %>
<% end %>
<%= label_tag :quote_number %>
<%= f.text_field :quote_number %>
<%= f.submit %>
<% end %>
当我尝试提交时,我收到错误：
Can't mass-assign protected attributes: item,customer
所以为了尝试修复它我更新了quote.rb中的attr_accessible以包含：item,：customer但是我得到了这个错误：
Item(#) expected,got ActiveSupport::HashWithIndifferentAccess(#)
任何帮助将不胜感激.
解决方法
要提交表单及其相关的子项,您需要使用
accepts_nested_attributes_for
要做到这一点,你需要在你将要使用的控制器的模型中声明它(在你的情况下,它看起来像Quote Controller.
class Quote < ActiveRecord::Base attr_accessible :quote_number has_one :customer has_one :item accepts_nested_attributes_for :customers,:items end
此外,您需要确保声明哪个attributes are accessible以避免其他质量分配错误.