Question

class Ecard
  include MongoMapper::Document

  key :family, String
  key :given, String
  key :additional, String
  key :prefix, String
  key :suffix, String

  has_many :emails

end

class Email
  include MongoMapper::EmbeddedDocument

  key :pref, Boolean
  key :email, String

end

控制器中的

 def new
    @ecard = Ecard.new

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @ecard }
    end
  end

以我的形式

<%= form_for(@ecard) do |f| %>

<%= f.label t :family, :scope => :name  %><br />
<%= f.text_field :family %><br />

<%= @ecard.emails.each do |email| %>
    <%= f.fields_for email, :index => email do |e| %>
        <%= e.label :pref %>
        <%= e.check_box :pref %>
        <%= e.label :email %>
        <%= e.text_field :email %>
    <% end %>
  <% end %>
 <% end %>

如何创建新的电子邮件嵌套资源？

Answer 1

虽然mongomapper不支持“accepts_nested_attributes_for”，但以下内容适用于我使用rails 3.2.7，mongo_mapper 0.11.2，mongo 1.6.4，bson 1.6.4。经常参考“rake routes”直到路由正确，即url_for，控制器方法等。请注意email.id的隐藏字段以及包含创建新电子邮件项的路径的按钮。这仅适用于嵌入式关联中的新项目（您可以完成放置/更新）。希望这有助于你前进。

-Gary

应用程序/控制器/ ecards_controller.rb

class EcardsController < ApplicationController
  def new
    @ecard = Ecard.create
    respond_to do |format|
      format.html { render :template => 'ecards/show' }
      format.json { render json: @ecard }
    end
  end

  def show
    @ecard = Ecard.find(params[:id])
    respond_to do |format|
      format.html { render :template => 'ecards/show' }
      format.json { render json: @ecard }
    end
  end

end

应用程序/控制器/ emails_controller.rb

class EmailsController < ApplicationController
  def new
    @ecard = Ecard.find(params[:ecard_id])
    @ecard.emails << Email.new
    @ecard.save
    respond_to do |format|
      format.html { render :template => 'ecards/show' }
      format.json { render json: @ecard }
    end
  end
end

应用程序/视图/电子贺卡/ show.html.erb

<%= form_for(@ecard) do |f| %>

    <%= f.label :family, :scope => :name %><br />
    <%= f.text_field :family %><br />

    <% @ecard.emails.each do |email| %>
        <%= f.fields_for email, :index => email do |e| %>
            <%= e.hidden_field :id, :value => email.id %>
            <%= e.label :pref %>
            <%= e.check_box :pref %>
            <%= e.label :email %>
            <%= e.text_field :email %>
            <br/>
        <% end %>
    <% end %>

<% end %>
<%= button_to 'New Email', url_for([:new, @ecard, :email]), :method => :get %>

配置/ routes.rb中

resources :ecards do
    resources :emails
end

Rails 3形成mongodb如何用关联创建一个新项目

1 个答案: