Question

每个User只能有一个MedicalHistory所以我有

class User < ActiveRecord::Base
    acts_as_authentic
end

class MedicalHistory < ActiveRecord::Base
    belongs_to :user
end

使用上面的内容，我可以在控制台的MedicalHistory模型中成功创建用户：

newuser = Medicalhistory.new
newuser.user = User.new
newuser.user.username='testusername'
newuser.user.password='blahblah'
newuser.user.password_confirmation='blahblah'
newuser.user.save

MedicalHistory Side看起来像是

#controller
def new
    @medicalhistory = MedicalHistory.new
    @medicalhistory.user = User.new
end

#form
<%=...%>
<%=f.intput :cell_phone%>
<%=f.fields_for :user do |builder|%>
  <%= render "registration_form", :f => builder %>
<% end %>

#Partial
<%=f.input :email%>
<%=f.input :password%>
<%=f.input :password_confirmation%>

错误

提交表单时，我收到以下错误：

User(#-) expected, got ActiveSupport::HashWithIndifferentAccess(#)

错误在以下行：

#controller
def create
    @medicalhistory = Medicalhistory.new(session[:medicalhistory_params]) #gives error
    #somewhere here I should extract registration fields and register the user
end

问题有没有办法可以避免部分（注册字段）中的字段进入session[:medicalhistory_params] ...是否有except或其他内容？

Answer 1

按如下方式更改模型：

class MedicalHistory < ActiveRecord::Base
  belongs_to :user
  accepts_nested_attributes_for :user
end

参考此处：http://api.rubyonrails.org/classes/ActiveRecord/NestedAttributes/ClassMethods.html

Answer 2

是否有理由不在params[:medical_history]中使用#create之类的内容？

Answer 3

您可能需要查看accepts_nested_attributes_for

请参阅此内容 http://ryandaigle.com/articles/2009/2/1/what-s-new-in-edge-rails-nested-attributes

从其他模型注册用户

3 个答案: