# :with =\> javascript method call **URL:** \ **Category:** Rails\ **Created:** [June 9, 2008, 6:43pm UTC](https://www.ruby-forum.com/t/with-javascript-method-call/139972 "2008-06-09T18:43:46Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![bigdaddy71](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/bbe5ce/32.png) [@bigdaddy71](https://www.ruby-forum.com/u/bigdaddy71)\ **Post date:** [June 9, 2008, 6:43pm UTC](https://www.ruby-forum.com/t/with-javascript-method-call/139972/1 "2008-06-09T18:43:46Z")
I have a form and I am trying to pass a next\_question param which will hold a value that is returned by a javascript function. Is this possible? I am new to using :with and javascript and have read documentation on it as well as an entire page explaining it with examples but I still dont really understand how to do this, or if it is even possible. :with =\> “'next\_question='javascript: getNextQuestion()” Thanks in advance, chris ---
**Author:** ![bigdaddy71](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/bbe5ce/32.png) [@bigdaddy71](https://www.ruby-forum.com/u/bigdaddy71)\ **Post date:** [June 9, 2008, 6:57pm UTC](https://www.ruby-forum.com/t/with-javascript-method-call/139972/2 "2008-06-09T18:57:44Z")
Chris H. wrote: > I have a form and I am trying to pass a next\_question param which will > hold a value that is returned by a javascript function. Is this > possible? I am new to using :with and javascript and have read > documentation on it as well as an entire page explaining it with > examples but I still dont really understand how to do this, or if it is > even possible. > > :with =\> “'next\_question='javascript: getNextQuestion()” > > Thanks in advance, > > chris What about the :compete call back. When using form\_remote\_tag I use :complete to clear a text\_field for example. I imagine if you had a div with an id you could use that javaScript function to change the innerText of that div upon complete to add the next question. Hope this helps, -S ---
**Author:** ![bigdaddy71](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/bbe5ce/32.png) [@bigdaddy71](https://www.ruby-forum.com/u/bigdaddy71)\ **Post date:** [June 9, 2008, 7:00pm UTC](https://www.ruby-forum.com/t/with-javascript-method-call/139972/3 "2008-06-09T19:00:19Z")
On 9 Jun 2008, at 17:43, Chris H. wrote: > :with =\> “'next\_question='javascript: getNextQuestion()” I’ve got some examples here: > **[:with or :without you: link\_to\_remote's mysterious parameter - Space Vatican](https://www.spacevatican.org/2008/5/17/with-or-without-you-link_to_remote-s-mysterious-parameter/)** > > One of the nice things about Rails is that it makes it really easy to get off the ground with Ajax, thanks to the link\_to\_remote helper (and all the … it is possible - what you don’t seem to have grasped yet is that the entirety of the :with parameter should be a piece of javascript code. Fred ---
**Author:** ![bigdaddy71](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/bbe5ce/32.png) [@bigdaddy71](https://www.ruby-forum.com/u/bigdaddy71)\ **Post date:** [June 9, 2008, 7:19pm UTC](https://www.ruby-forum.com/t/with-javascript-method-call/139972/4 "2008-06-09T19:19:05Z")
On 9 Jun 2008, at 18:07, Chris H. wrote: > :with =\> “‘next\_question=’+getNextQuestion()” The problem is probably the getNextQuestion is not returning something that is uri encoded (or not returning anything at all). Remember that in javascript you need an explicit return statement, and use encodeURIComponent. Fred ---
**Author:** ![bigdaddy71](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/bbe5ce/32.png) [@bigdaddy71](https://www.ruby-forum.com/u/bigdaddy71)\ **Post date:** [June 9, 2008, 7:40pm UTC](https://www.ruby-forum.com/t/with-javascript-method-call/139972/5 "2008-06-09T19:40:09Z")
One last question and then I am giving up. It seems like nothing is getting passed over at all. The following should pass next\_question to the controller with a value of 6. In the controller I should be able to access it by saying params[:free\_response][:next\_question] correct? \<% form\_for(:free\_response, :url =\> {:action =\> ‘next’, :question =\> @question.id}, :with =\> “‘next\_question=’+encodeURIComponent(6)”) do |form| %\> Sorry for all the questions I am just completely lost on this one. I tried the encodeURIComponent() before and nothing changed so I kept changing it around. Chris ---
**Author:** ![bigdaddy71](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/bbe5ce/32.png) [@bigdaddy71](https://www.ruby-forum.com/u/bigdaddy71)\ **Post date:** [June 9, 2008, 7:07pm UTC](https://www.ruby-forum.com/t/with-javascript-method-call/139972/6 "2008-06-09T19:07:47Z")
Fred, I’m sorry, that was the page I was reading. I found a link to it in another forum. I have tried several different ways of doing this and none of them seem to be working for me. From one of the last 2 examples on your page it seems like the following should work but I am not having any luck. :with =\> “‘next\_question=’+getNextQuestion()” I am glad to hear this is possible though. Thanks ---
**Author:** ![bigdaddy71](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/bbe5ce/32.png) [@bigdaddy71](https://www.ruby-forum.com/u/bigdaddy71)\ **Post date:** [June 9, 2008, 7:46pm UTC](https://www.ruby-forum.com/t/with-javascript-method-call/139972/7 "2008-06-09T19:46:10Z")
On 9 Jun 2008, at 18:40, Chris H. wrote: > |form| %\> > > Sorry for all the questions I am just completely lost on this one. I > tried the encodeURIComponent() before and nothing changed so I kept > changing it around. :with is only for remote\_form\_for, link\_to\_remote etc… in your case i’d probably use an onsubmit to update a hidden field Fred ---
**Author:** ![bigdaddy71](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/bbe5ce/32.png) [@bigdaddy71](https://www.ruby-forum.com/u/bigdaddy71)\ **Post date:** [June 9, 2008, 7:57pm UTC](https://www.ruby-forum.com/t/with-javascript-method-call/139972/8 "2008-06-09T19:57:18Z")
Thanks for your time and patience.