[英]Rails 3 respond_to json, with custom attributes/methods
In a rails app I have an action that returns a json representation of a collection of different models.在 Rails 应用程序中,我有一个操作返回不同模型集合的 json 表示。 It looks something like this:它看起来像这样:
respond_to :json
def index
@cars = Car.all
@vans = Van.all
respond_with({
:cars => @cars,
:vans => @vans
})
end
However, I want to customise the attributes and methods that are passed to the json object.但是,我想自定义传递给 json object 的属性和方法。 A bit like:有一点像:
respond_with({
:cars => @cars.to_json(:only => [:make, :model], :methods => [:full_name]),
:vans => @vans
})
Doing the above, causes the json representation of the "cars" to be escaped as one big string, like:执行上述操作会导致“汽车”的 json 表示被转义为一个大字符串,例如:
{
"cars":"[{\"car\":{\"make\":\"Ford\" ... etc
"vans": [{"van":{"make":"Citreon" ... vans not escaped
}
Obviously I'm approaching this the wrong way.显然,我正在以错误的方式处理这个问题。 Can anyone point me in the right direction?谁能指出我正确的方向?
Since you're nesting the to_json
in another Hash
, I think you need to use as_json
(which returns a Hash
instead of a String
) instead:由于您将to_json
嵌套在另一个Hash
中,我认为您需要使用as_json
(它返回Hash
而不是String
):
respond_with({
:cars => @cars.as_json(:only => [:make, :model], :methods => [:full_name]),
:vans => @vans
})
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.