在 Rails 中,如何使用视图呈现 JSON? [英] In Rails, how do you render JSON using a view?
问题描述
假设你在你的用户控制器中并且你想得到一个显示请求的 json 响应,如果你能在你的视图/用户/目录中创建一个文件,命名为 show.json 并在你的users#show 操作完成,它呈现文件.
Suppose you're in your users controller and you want to get a json response for a show request, it'd be nice if you could create a file in your views/users/ dir, named show.json and after your users#show action is completed, it renders the file.
目前你需要做一些事情:
Currently you need to do something along the lines of:
def show
@user = User.find( params[:id] )
respond_to do |format|
format.html
format.json{
render :json => @user.to_json
}
end
end
但如果你能创建一个像这样自动渲染的 show.json 文件就好了:
But it would be nice if you could just create a show.json file which automatically gets rendered like so:
def show
@user = User.find( params[:id] )
respond_to do |format|
format.html
format.json
end
end
这会为我省去很多痛苦,并且会洗去我在控制器中渲染 json 时那种可怕的肮脏感觉
This would save me tons of grief, and would wash away that horribly dirty feeling I get when I render my json in the controller
推荐答案
你应该能够在你的 respond_to
块中做这样的事情:
You should be able to do something like this in your respond_to
block:
respond_to do |format|
format.json
render :partial => "users/show.json"
end
这将在 app/views/users/_show.json.erb
中呈现模板.
which will render the template in app/views/users/_show.json.erb
.
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