Ruby on Rails |一张表格 - 三张表格（无法保存表格内容）

Question

我正在尝试编写一个应用程序 - 用户详细信息的简单表单，它将数据保存到三个不同的表（1.users、2.companies、3.adresses）。 我使用belongs_to 和has_many 设置了一些关联，并且还使用nested_attributes 和fields_for 来构建一个表单。但我无法保存数据。 我是新手，所以可能我犯了一些愚蠢的错误，但自从 3 天以来我真的找不到它们。还试图在谷歌和这里的论坛帖子中查找，但没有找到代码，问题与子类有关。我在用户、公司和地址之间的联系很奇怪。谁能帮我？

这是我的表格：

<%= simple_form_for @user do |f| %>

    <h5>Personal Details</h5>
      <%= f.input :firstname, label: 'Your First Name:' %>
      <%= f.input :lastname, label: 'Your Last Name:' %>
      <%= f.input :email, label: 'Your Email:' %>
      <%= f.input :dateofbirth, label: 'Your Date of Birth:' %>
      <%= f.input :phonenumber, label: 'Your Phone Number' %>
    <h5>Adress</h5>

      <%= f.fields_for :adresses do |g| %>
          <%= g.input :street, label: 'Street:' %>
          <%= g.input :city, label: 'City:' %>
          <%= g.input :zipcode, label: 'Zip Code:' %>
          <%= g.input :country, label: 'Country:' %>
      <% end %>

     <h5>Company</h5>  
     <%= f.fields_for :companies do |h| %>
          <%= h.input :name, label: 'Name:' %>
     <% end %>      

     <%= f.fields_for :adresses do |i| %>
          <%= i.input :comstreet, label: 'Street:' %>  
          <%= i.input :comcity, label: 'City:' %>  
          <%= i.input :comzipcode, label: 'Zip Code:' %>  
          <%= i.input :comcountry, label: 'Country:' %>  
      <% end %>

      <%= f.button :submit %>
<% end %>

用户.rb

class User < ApplicationRecord
  belongs_to :company, inverse_of: :users
  belongs_to :adress,  inverse_of: :users

  validates_presence_of :firstname, :lastname, :email
  validates_length_of :firstname, :maximum => 100
  validates_length_of :lastname, :maximum => 100
end

公司.rb

class Company < ApplicationRecord
  has_many :users, inverse_of: :companies
  belongs_to :adress, inverse_of: :companies
  accepts_nested_attributes_for :users
end

地址.rb

class Adress < ApplicationRecord
  has_many :users, inverse_of: :adresses
  has_many :companies, inverse_of: :adresses

  accepts_nested_attributes_for :users, :companies
end

users_controller

class UsersController < ApplicationController

  def index
  end

  def new
   @user = User.new 
   @company = Company.new
   @adress = Adress.new
  end

  def create
    @user = User.new(user_params)
    if @user.save 
        redirect_to root_path
    end    
  end    

  private

  def user_params
    params.require(:user).permit(:firstname, :lastname, :email, :dateofbirth, 
    :phonenumber, company_attributes: [:name], 
    adress_attributes: [:street,:city, :zipcode, :country, :comstreet, 
    :comctiy, :comzipcode, :comcountry] )
  end    
end

Answer 1

在您的 user.rb 文件中：

class User < ApplicationRecord
  belongs_to :company, inverse_of: :users
  belongs_to :adress,  inverse_of: :users

  validates_presence_of :firstname, :lastname, :email
  validates_length_of :firstname, :maximum => 100
  validates_length_of :lastname, :maximum => 100
  # add nested attributes here not in other models
  accepts_nested_attributes_for :companies
  accepts_nested_attributes_for :addresses

end

另外，在您的控制器中：仔细检查传递的参数名称。 address_attributes 拼写错误

def user_params
    params.require(:user).permit(:firstname, :lastname, :email, :dateofbirth, 
    :phonenumber, company_attributes: [:name], 
    address_attributes: [:street,:city, :zipcode, :country, :comstreet, 
    :comctiy, :comzipcode, :comcountry] )
  end 

在视图中，删除地址的多个表单元素。你写了两次。

Answer 2

我对代码做了一些改动，可以保存表单，请检查

这是我的表格：

<%= simple_form_for @user do |f| %>

    <h5>Personal Details</h5>
      <%= f.input :firstname, label: 'Your First Name:' %>
      <%= f.input :lastname, label: 'Your Last Name:' %>
      <%= f.input :email, label: 'Your Email:' %>
      <%= f.input :dateofbirth, label: 'Your Date of Birth:' %>
      <%= f.input :phonenumber, label: 'Your Phone Number' %>
    <h5>Adress</h5>

      <%= f.fields_for :adress_attributes do |g| %>
          <%= g.input :street, label: 'Street:' %>
          <%= g.input :city, label: 'City:' %>
          <%= g.input :zipcode, label: 'Zip Code:' %>
          <%= g.input :country, label: 'Country:' %>
      <% end %>

     <h5>Company</h5>  
     <%= f.fields_for :company_attributes do |h| %>
          <%= h.input :name, label: 'Name:' %>
            <%= h.fields_for :adress_attributes do |i| %>
              <%= i.input :street, label: 'Street:' %>  
              <%= i.input :city, label: 'City:' %>  
              <%= i.input :zipcode, label: 'Zip Code:' %>  
              <%= i.input :country, label: 'Country:' %>  
           <% end %>
     <% end %>      



      <%= f.button :submit %>
<% end %>

用户.rb

class User < ApplicationRecord
  belongs_to :company, inverse_of: :users
  belongs_to :adress,  inverse_of: :users

  validates_presence_of :firstname, :lastname, :email
  validates_length_of :firstname, :maximum => 100
  validates_length_of :lastname, :maximum => 100
  accepts_nested_attributes_for :company
  accepts_nested_attributes_for :address
end

公司.rb

class Company < ApplicationRecord
  has_many :users, inverse_of: :companies
  belongs_to :adress, inverse_of: :companies
  accepts_nested_attributes_for :users
  accepts_nested_attributes_for :adress
end

地址.rb

class Adress < ApplicationRecord
  has_many :users, inverse_of: :adresses
  has_many :companies, inverse_of: :adresses

  accepts_nested_attributes_for :users, :companies
end

users_controller

class UsersController < ApplicationController

  def index
  end

  def new
   @user = User.new 
  end

  def create
    @user = User.new(user_params)
    if @user.save 
        redirect_to root_path
    end    
  end    

  private

  def user_params
    params.require(:user).permit(:firstname, :lastname, :email, :dateofbirth, 
    :phonenumber, company_attributes: [:name, adress_attributes: [:street, 
    :ctiy, :zipcode, :country]], 
    adress_attributes: [:street,:city, :zipcode, :country] )
  end    
end

它现在正在工作，可以用公司地址保存用户、地址和公司。