乍一看,这个问题似乎已经被回答过,但在我的案例中却没有(大多数都与批量分配问题和/或 mongoid 有关。)即使这里有很多相关的问题,我也无法找到答案.
所以基本上我在 ruby on rails 应用程序上使用 devise gem 进行用户身份验证,我想向用户模型添加一个嵌套地址模型。我还使用 simple_form 来生成表单视图。
我有一个用户模型:
class User < ActiveRecord::Base
has_and_belongs_to_many :roles
has_one :address
accepts_nested_attributes_for :address, :allow_destroy => true
end
这是地址模型:
class Address < ActiveRecord::Base
belongs_to :country
belongs_to :state
belongs_to :user
attr_accessible :street1, :street2, :country_id, :state_id, :city, :postalCode
end
这是用户控制器,我覆盖它以添加显示操作以显示用户配置文件。
class Users::RegistrationsController < Devise::RegistrationsController
def new
resource = build_resource({})
resource.build_address
respond_with resource
end
# POST /resource
def create
resource = build_resource(params[:user])
if resource.save
if resource.active_for_authentication?
set_flash_message :notice, :signed_up if is_navigational_format?
sign_up(resource_name, resource)
respond_with resource, :location => after_sign_up_path_for(resource)
else
set_flash_message :notice, :"signed_up_but_#{resource.inactive_message}" if is_navigational_format?
expire_session_data_after_sign_in!
respond_with resource, :location => after_inactive_sign_up_path_for(resource)
end
else
clean_up_passwords resource
respond_with resource
end
end
def show
@user = User.find(params[:id])
#Add to view count if not viewing own user profile
if @user != current_user
@user.views += 1
@user.save
end
@vehicles = Vehicle.where(:user_id => @user)
respond_to do |format|
format.html # show.html.erb
format.json { render json: @user }
end
end
end
这是创建新用户的视图:
<%= simple_form_for(resource, :as => resource_name, :url => registration_path(resource_name) ) do |f| %>
<fieldset>
<%= f.input :username, :required => false, :autofocus => true, placeholder: 'Pick a username' %>
<%= f.input :email, :required => false, placeholder: 'Your email' %>
<%= f.input :password, :required => false, placeholder: 'Create a password' %>
<%= f.input :password_confirmation, :required => false, placeholder: 'Confirm your password' %>
<%= f.association :roles, :as => :check_boxes, :label => "", :required => false %>
<%= f.simple_fields_for :address do |a| %>
<%= a.input :street1 %>
<%= a.input :street2 %>
<%= a.association :country %>
<%= a.association :state %>
<%= a.input :city %>
<%= a.input :postalCode %>
<% end %>
<%= f.button :submit, 'Sign up for free', :class => 'btn btn-success btn-large' %>
</fieldset>
<% end %>
所以创建新用户时的错误是:地址用户不能为空
基本上没有为地址设置外键 user_id。
我希望有人可以对这个问题有所了解。