On Wednesday, November 26, 2014 6:57:37 PM UTC+8, Colin Law wrote: > > On 26 November 2014 at 08:03, Zhao Difei <[email protected] <javascript:>> > wrote: > > Greetings all, > > > > I have a json object (text) to render, formatted as: > > > > { > > "a": "b", > > "c": > > [ { "id": "abracadabra", > > "data": "good" } > > { "id": "abracxxabra", > > "data": "goodsss" } ] > > } > > > > How could exclude the id fields from rendering, I tried different > > combinations: > > > > render json: obj, except: [ c: [ "id" ] ] > > render json: obj, include: [ c: [ except: "id" ] ] > > > > none of them works, any ideas? Thanks in advance. > > If your json object is actually an ActiveRecord object (or maybe more > correctly ActiveModel) and you always want these objects to render in > a particular way, then you can override as_json to achieve this. Then > using render json to serialise it will use use overridden as_json, > where you can include whichever bits (including calculated values) > that you desire. > I in fact I already override two methods of mongoid to do this, but I still have some json strings to render, which is not very handy if I cannot use the "render :except" method.
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