Backbone.js的和Rails - 如何处理来自骨干机型PARAMS？ [英] Backbone.js and Rails - How to handle params from Backbone models?

问题描述

在一个标准的Rails控制器，我想创建一个记录是这样的：

In a standard Rails controller, I'd create a record like this:

@user = User.new(params[:user])

这假定了进来表单参数嵌套。

This assumes that the form parameters that come in are nested.

我一直在玩Backbone.js的，我注意到，在默认情况下，骨干不窝参数正常的Rails表单可能的方式，这实际上是我的预期。所以我不知道我该怎么办...

I've been playing with Backbone.js and I noticed that by default, Backbone doesn't nest the parameters the way a normal Rails form might, which is actually something I expected. So I'm wondering what I should do...

我

找出在服务器端，如果它是从骨干网的要求通过观察接受头，等和操纵PARAMS自己，所以我可以保持我的控制器code小：

figure out on the server-side if it's a request from Backbone by looking at accepts headers, etc and manipulate the params myself so I can keep my controller code small:

do_some_params_manipulation_with(params)
@user = User.new(params[:user])
respond_to do |format|
  if @user.save
    format.html {redirect_to users_url}
    format.json {render :json => @user.to_json }
  end
end

或者，我该实例中反复code结束了，但可能是从长远来看，更容易维护，每个分支的对象....

Or, do I instantiate the object in each branch which ends up with repeated code but might be more maintainable in the long run....

respond_to do |format|
  format.html do
    @user = User.new(params[:user])
    if @user.save
      redirect_to users_url
    end
  end

  format.json do
    @user = User.new(params) # and rely on mass-assignment protection
    if @user.save
      render :json => @user.to_json
    end
  end

end

还是我通过重写.toJSON方法（我不完全知道怎么做，因为我不知道有足够的了解Backbone.js的还），使其巢PARAMS？修改我的Backbone.js的机型

or do I modify my Backbone.js models by overriding the .toJSON method (which I'm not entirely sure how to do because I don't know enough about Backbone.js yet) so that it nests the params?

在这种情况下，我可以访问应用程序的两侧，但我感兴趣的是别人在做什么。

In this situation, I have access to both sides of the app, but I am interested in what others are doing.

推荐答案

这是很好的时候可以有一般的Rails的形式和骨干形成匹配相对于根节点。这就是为什么在我最后的应用程序，我选择覆盖骨干机型的toJSON方法。

It's nice when you can have the general Rails forms and Backbone forms match with respect to the root node. That's why in my last application I chose to override the Backbone models' toJSON method.

您可以覆盖全局的toJSON方法作为Raimonds Simanovskis建议。但是，即使非干法的做法是没有那么糟糕。样板只有一条线路为每个模型定义：

You could override the global toJSON method as Raimonds Simanovskis suggested. But even the non-DRY way approach isn't so bad. Just one line of boilerplate for each model definition:

// Depends on Underscore.js
User = Backbone.Model.extend({
  toJSON: function() {
    return { user: _.clone( this.attributes ) }
  },
  // Your other methods here
});

编辑：修正code样品。很抱歉的错误，我是从翻译的CoffeeScript为JavaScript。

Corrected code sample. Sorry for the errors, I was translating from CoffeeScript to JavaScript.

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