# Rails, ajax, json, and script **URL:** \ **Category:** Rails\ **Created:** [June 8, 2010, 4:00pm UTC](https://www.ruby-forum.com/t/rails-ajax-json-and-script/189834 "2010-06-08T16:00:21Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![ralphshnelvar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/e19adc/32.png) [@ralphshnelvar](https://www.ruby-forum.com/u/ralphshnelvar)\ **Post date:** [June 8, 2010, 4:00pm UTC](https://www.ruby-forum.com/t/rails-ajax-json-and-script/189834/1 "2010-06-08T16:00:21Z")
Could someone please demonstrate the code to send both json (or xml) AND javascript (to be executed) in a single Ajax request? Is this even possible? ---
**Author:** ![ralphshnelvar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/e19adc/32.png) [@ralphshnelvar](https://www.ruby-forum.com/u/ralphshnelvar)\ **Post date:** [June 8, 2010, 4:14pm UTC](https://www.ruby-forum.com/t/rails-ajax-json-and-script/189834/2 "2010-06-08T16:14:54Z")
On Jun 8, 3:00 pm, Ralph S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Could someone please demonstrate the code to send both json (or xml) AND > javascript (to be executed) in a single Ajax request? Assuming you mean sending that as the response to an ajax request … If you set the X-JSON header to be a json fragment Prototype (don’t know about other libraries) will deserialize that for you, and then the response body can be whatever you want. Personally if I’ve already written stuff to take a JSON response and do stuff based on that data, I wouldn’t want to also send back javascript fragments - I’d just write the client side code to do the desired action if the appropriate content was in the response JSON Fred ---
**Author:** ![ralphshnelvar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/e19adc/32.png) [@ralphshnelvar](https://www.ruby-forum.com/u/ralphshnelvar)\ **Post date:** [June 8, 2010, 4:56pm UTC](https://www.ruby-forum.com/t/rails-ajax-json-and-script/189834/3 "2010-06-08T16:56:20Z")
Frederick C. wrote: > On Jun 8, 3:00�pm, Ralph S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > Could someone please demonstrate the code to send both json (or xml) AND > > javascript (to be executed) in a single Ajax request? > > Assuming you mean sending that as the response to an ajax request … > > If you set the X-JSON header to be a json fragment Prototype (don’t > know about other libraries) will deserialize that for you, and then > the response body can be whatever you want. Fred: Ok … lets say I have two variables ABC and XYZ and I want to send the values of those two variables back to my jQuery code … What’s the magic invocation to do that in Rails? ---
**Author:** ![ralphshnelvar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/e19adc/32.png) [@ralphshnelvar](https://www.ruby-forum.com/u/ralphshnelvar)\ **Post date:** [June 8, 2010, 5:16pm UTC](https://www.ruby-forum.com/t/rails-ajax-json-and-script/189834/4 "2010-06-08T17:16:23Z")
On Jun 8, 3:56 pm, Ralph S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Frederick C. wrote: > > > On Jun 8, 3:00 pm, Ralph S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Fred: > > Ok … lets say I have two variables ABC and XYZ and I want to send the > values of those two variables back to my jQuery code … > > What’s the magic invocation to do that in Rails? I’d just write render :json =\> {:abc =\> 1, :xyz =\> 2}.if you want to do it via a header because something else is in the body then call to\_json yourself to get the json data and stick it in a header. Fred ---
**Author:** ![ralphshnelvar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/e19adc/32.png) [@ralphshnelvar](https://www.ruby-forum.com/u/ralphshnelvar)\ **Post date:** [June 8, 2010, 5:51pm UTC](https://www.ruby-forum.com/t/rails-ajax-json-and-script/189834/5 "2010-06-08T17:51:18Z")
Frederick C. wrote: > On Jun 8, 3:56�pm, Ralph S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > Frederick C. wrote: > > > > > On Jun 8, 3:00 pm, Ralph S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > Fred: > > > > Ok … lets say I have two variables ABC and XYZ and I want to send the > > values of those two variables back to my jQuery code … > > > > What’s the magic invocation to do that in Rails? > > I’d just write render :json =\> {:abc =\> 1, :xyz =\> 2}.if you want to > do it via a header because something else is in the body then call > to\_json yourself to get the json data and stick it in a header. > > Fred Fred (or anyone): Do you know of any tutorial that explains this header stuff? ---
**Author:** ![ralphshnelvar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/e19adc/32.png) [@ralphshnelvar](https://www.ruby-forum.com/u/ralphshnelvar)\ **Post date:** [June 8, 2010, 9:51pm UTC](https://www.ruby-forum.com/t/rails-ajax-json-and-script/189834/6 "2010-06-08T21:51:31Z")
Frederick C. wrote: > On Jun 8, 4:51�pm, Ralph S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > Do you know of any tutorial that explains this header stuff? > > Setting headers is pretty easy: > > response.headers[‘X-JSON’] = blah.to\_json > > And then in your client side code look at the the header and read the > JSON (prototype will do this for you, jquery might not) > > Fred Fred and all: Thank you, Fred. What is all this header and body stuff? I’d really like to understand this. Is there an overview? I have Googled stuff but … I’m not finding any meat. ---
**Author:** ![ralphshnelvar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/e19adc/32.png) [@ralphshnelvar](https://www.ruby-forum.com/u/ralphshnelvar)\ **Post date:** [June 8, 2010, 10:08pm UTC](https://www.ruby-forum.com/t/rails-ajax-json-and-script/189834/7 "2010-06-08T22:08:33Z")
On Tue, Jun 8, 2010 at 12:51 PM, Ralph S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > What is all this header and body stuff? I’d really like to understand > this. Start with: [Hypertext Transfer Protocol -- HTTP/1.1](http://www.w3.org/Protocols/rfc2616/rfc2616.html) – Hassan S. ------------------------ removed\_email\_address@domain.invalid twitter: @hassan ---
**Author:** ![ralphshnelvar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/e19adc/32.png) [@ralphshnelvar](https://www.ruby-forum.com/u/ralphshnelvar)\ **Post date:** [June 8, 2010, 10:15pm UTC](https://www.ruby-forum.com/t/rails-ajax-json-and-script/189834/8 "2010-06-08T22:15:35Z")
On 8 June 2010 21:06, Hassan S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > On Tue, Jun 8, 2010 at 12:51 PM, Ralph S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > What is all this header and body stuff? I’d really like to understand > > this. > > Start with: [Hypertext Transfer Protocol -- HTTP/1.1](http://www.w3.org/Protocols/rfc2616/rfc2616.html) I think that may be a bit heavy for starters. Possibly [HTTP - Wikipedia](http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol) is a bit more readable. Colin ---
**Author:** ![ralphshnelvar](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/e19adc/32.png) [@ralphshnelvar](https://www.ruby-forum.com/u/ralphshnelvar)\ **Post date:** [June 8, 2010, 6:02pm UTC](https://www.ruby-forum.com/t/rails-ajax-json-and-script/189834/9 "2010-06-08T18:02:38Z")
On Jun 8, 4:51 pm, Ralph S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Do you know of any tutorial that explains this header stuff? Setting headers is pretty easy: response.headers[‘X-JSON’] = blah.to\_json And then in your client side code look at the the header and read the JSON (prototype will do this for you, jquery might not) Fred