exclude certain json fields from rendering

[Zhao Difei]

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.

Cheers,

Difei

[Vivek Sampara]

Your example has an error 

{ "id": "abracadabra",

"data": "good" },(comma is missing)

{ "id": "abracxxabra",

"data": "goodsss" }

Solution

render json: JSON.parse(obj).each{|k,v| v.each{|arr| arr.reject!{|x| x == "id" } } if v.class.to_s == "Array"}.to_json

--
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-ta...@googlegroups.com.
To post to this group, send email to rubyonra...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/2cd584c3-a4f0-4ced-9dfa-0b89f61f89d6%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[Colin Law]

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.

Colin

[Zhao Difei]

On Wednesday, November 26, 2014 6:25:01 PM UTC+8, Vivek Sampara wrote:

Your example has an error 

Sorry, it's a typo. 

{ "id": "abracadabra",

"data": "good" },(comma is missing)

{ "id": "abracxxabra",

"data": "goodsss" }

Solution

render json: JSON.parse(obj).each{|k,v| v.each{|arr| arr.reject!{|x| x == "id" } } if v.class.to_s == "Array"}.to_json

Thanks but I found this a little bit ugly, so there is no way to use :except ? 

[Zhao Difei]

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.

Colin

[Jason Fleetwood-Boldt]

Probably a good case for an Active Model Serializer tailored to that specific use case (JSON structure)

--
You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group.
To unsubscribe from this group and stop receiving emails from it, send an email to rubyonrails-ta...@googlegroups.com.
To post to this group, send email to rubyonra...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/rubyonrails-talk/2cd584c3-a4f0-4ced-9dfa-0b89f61f89d6%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

----

Jason Fleetwood-Boldt

te...@datatravels.com

http://www.jasonfleetwoodboldt.com/writing

All material © Jason Fleetwood-Boldt 2014. Public conversations may be turned into blog posts (original poster information will be made anonymous). Email ja...@datatravels.com with questions/concerns about this.