设计-嵌套属性-客户-> Customer_addresses ->地址

Question

我一直试图创建一个类似于下面列出的数据库的关系，使用devise来创建Customer表。我已经使用ID为其他表创建了迁移，但是表名和ID。我知道我在has_many的关系上做得太过火了，但是我已经尝试了一整天。

任何人都可以帮助或显示正确的方式来设置这一点，以便我可以创建，编辑和更新地址的用户。我使用简单的嵌套属性管理成功，比如Customer/ Direct to address，但是当我将表放在中间时，我就无法获得要显示或更新的address属性。

我想还有一个更复杂的编辑、创建、销毁方法也需要实现。

我也对如何允许这种类型嵌套的强参数感到困惑，因为我可以找到的大多数例子都是将其连接到包含user_id的表，而不是通过另一个表连接的表。

提前为指导干杯。

DataModel图像

表customers / Devise默认值

customer_addresses id address_id address_type_id customer_id

地址 id地址xzy Marua路其他详细信息/前厅

address_type id address_type/ Home，Business等address_type_description /您居住的地方等

​

class Customer < ActiveRecord::Base
has_many :customer_addresses
has_many :addresses
has_many :address_types

accepts_nested_attributes_for :customer_addresses
accepts_nested_attributes_for :address_types
accepts_nested_attributes_for :addresses
end

class UserAddress < ActiveRecord::Base
has_many :customer
has_many :address_types
has_many :addresses
end

class AddressType < ActiveRecord::Base
belongs_to :customer_address
end

class Address < ActiveRecord::Base
belongs_to :user_address
end

​

​

  <div class="field">
    <%= f.fields_for :user_addresses do |ff| %>
        <div>
          <%= ff.label :address_id %><br />
          <%= ff.text_field :address_id %>
            <%= ff.fields_for :address do |fff| %>
              <%= fff.label :address %><br />
              <%= fff.text_field :address %>
          <% end %>
    <% end %>
        </div>
    </div>

user controller params

 def user_params
params.require(:user).permit(:id, :username, :first_name, :last_name, :email, :password, :password_confirmation,
                            user_address_attributes:[:user_is, :address_id, :address_type_id],
                            addresses_attributes:[:id, :address, :other_address_details ],
                            address_type_attributes:[ :id, :address_type])
  end

​

Answer 1

您定义的关联应该如下所示

class Customer
  has_many :customer_addresses
  has_many :addresses, :through => :customer_addresses
  has_many :address_types, :through => :customer_addresses
end

class Address
  has_many :customer_addresses
  has_many :customers, :through => :customer_addresses
  has_many :address_types, :through => :customer_addresses
end

class AddressType
  has_many :customer_addresses
  has_many :customers, :through => :customer_addresses
  has_many :addresses, :through => :customer_addresses
end

class CustomerAddress
  belongs_to :customer
  belongs_to :address
  belongs_to :address_type
end

Answer 2

class Customer < ActiveRecord::Base

  has_many :customer_addresses
  accepts_nested_attributes_for :customer_addresses

end

class AddressType
  has_many :customer_addresses

end

class CustomerAddress

 belongs_to :address_type
 belongs_to :customer
 belongs_to :address

 accepts_nested_attributes_for :address

 after_initialize :add_address, unless: 'address.present?'

 def add_address
    self.build_address
 end 

end