困惑与设计

Question

强参数我有以下设计的登记表（与不相关的标记省略）：

<%= form_for(resource, as: resource_name, url: registration_path(resource_name), html: { id: "payment-form" }) do |f| %> 
    <%= f.fields_for resource.paid_account do |pa| %> 
    <%= pa.collection_select :account_plan_id, @account_plans, :id, :name_with_price %> 
    <% end %> 
<% end %> 

这种形式吐出以下HTML：

<select id="user_paid_account_account_plan_id" name="user[paid_account][account_plan_id]"> 
    <option value="2">Lite ($10.00/mo)</option> 
    <option value="3">Professional ($20.00/mo)</option> 
    <option value="4">Plus ($30.00/mo)</option> 
</select> 

我然后有以下代码我ApplicationController：

class ApplicationController < ActionController::Base 
    before_filter :configure_permitted_parameters, if: :devise_controller? 

    def configure_permitted_parameters 
    devise_parameter_sanitizer.for(:sign_up) do |u| 
     u.permit(
     :email, 
     :password, 
     :paid_account => :account_plan_id # <-- THIS IS PROBABLY WRONG 
    ) 
    end 
    end 
end 

当我提交我的形式，我得到“PaidAccount（ ＃2163736620）预计，得到ActionController :: Parameters（＃2173083140）“。

我也试着不给错误的下面，但它也没有创造一项纪录：

u.permit(
    :email, 
    :password, 
    :paid_account => [] 
) 

我在做什么错？

Answer 1

显示你的两个模型（User和PaidAccount，我相信）会有很大的帮助。无论如何，假设User有PaidAccount一比一的关系，代码可能应该是这样的：

class User < ActiveRecord::Base 
    has_one :paid_account 

    accepts_nested_attributes_for :paid_account 
end 

class PaidAcount < ActiveRecord::Base 
    belongs_to :user 
end 

class ApplicationController < ActionController::Base 
    before_filter :configure_permitted_parameters, if: :devise_controller? 

    def configure_permitted_parameters 
    devise_parameter_sanitizer.for(:sign_up) do |u| 
     u.permit(
     :email, 
     :password, 
     :paid_account_attributes => :account_plan_id 
    ) 
    end 
    end 
end 

看看你的日志来查看表单值是如何被提交。 StrongPameters gem和Active Record's Nested Attributes的文档也应该有所帮助。