具有Mongoid嵌入关系的表格 [英] Formtastic with Mongoid embedded_in relations

问题描述

有什么快速的方法可以为embeds_many-embedded_in关系建立表格? 我有以下内容:

Is there any quick way to make a form for embeds_many-embedded_in relation? I have the following:

class Team
  include Mongoid::Document
  field :name, :type => String
  embeds_many :players
end

class Player
  include Mongoid::Document
  embedded_in :team, :inverse_of => :players
  field :name, :type => String
end

我想为团队创建一个表单，并为玩家嵌入编辑内容.看到 https://github.com/bowsersenior/formtastic_with_mongoid_tutorial ，但此处有待办事项".

I want to create a form for team with embedded editing for players. Seen https://github.com/bowsersenior/formtastic_with_mongoid_tutorial but "TODO" there.

推荐答案

我写了formtastic_with_mongoid_tutorial，但不幸的是，我还没有找到一种处理嵌入式关系的简单方法.我现在正在做的是在控制器中构建嵌入式对象，然后将这些对象传递到一个块中.看起来像这样:

I wrote the formtastic_with_mongoid_tutorial and unfortunately I haven't figured out an easy way of dealing with embedded relations yet. What I'm doing now is building the embedded objects in the controller, and then passing the objects into a block. It would look kind of like this:

= semantic_form_for @team do |form|
  = @team.players.each do |player|
    = form.inputs :for => [:players, player] do |player_form|
      = player_form.input :name

别忘了处理Team中的嵌套属性:

Don't forget to deal with nested attributes in Team:

class Team
  include Mongoid::Document
  accepts_nested_attributes_for :players, 
    :allow_destroy => true, 
    # formtastic sends blank attributes to Mongoid models if you use checkboxes
    :reject_if => proc { |attributes| 
      attributes['name'].blank? && attributes['_destroy'].blank? 
    }
   # ...
end

这绝对不是理想的选择.希望我能提供更多帮助，但这也许会为您指明正确的方向.如果有的话，我会随时留意更好的解决方案并更新本教程.

It is definitely far from ideal. Wish I could be of more help, but maybe this will point you in the right direction. I'll keep an eye out for better solutions and update the tutorial if/when I find any.

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