# Link\_to\_remote **URL:** \ **Category:** Rails\ **Created:** [December 2, 2005, 4:35pm UTC](https://www.ruby-forum.com/t/link-to-remote/93658 "2005-12-02T16:35:22Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![rickthemick](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/6bbea6/32.png) [@rickthemick](https://www.ruby-forum.com/u/rickthemick)\ **Post date:** [December 2, 2005, 4:35pm UTC](https://www.ruby-forum.com/t/link-to-remote/93658/1 "2005-12-02T16:35:22Z")
Hi! I cant use funtions like link\_to\_remote in self defined calsses/objects used from within my controller? Is there a readon for this, I dont understand what libraries etc I need to include to get it running! Best regards /Rickard ---
**Author:** ![rickthemick](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/6bbea6/32.png) [@rickthemick](https://www.ruby-forum.com/u/rickthemick)\ **Post date:** [December 5, 2005, 9:02am UTC](https://www.ruby-forum.com/t/link-to-remote/93658/2 "2005-12-05T09:02:29Z")
hi! Is there no one that has experienced the same problem? I’m getting sick of this! Is it a bad description of the problem? If this doesnt work, there must be a good work around, or I probably have to leave ruby on rails. The thing is that I have an object in which I want to generate HTML and return it back to the controller which in turn displays it on the web page. ## Ok, a simple example: I want to do this in the object created from my controller: link\_to(“MyPage”, { :action =\> “run” }, :popup =\> [‘new\_window’, ‘height=300,width=600’]) * * * ## The error message: NoMethodError in Init\_test#index You have a nil object when you didn’t expect it! The error occured while evaluating nil.url\_for RAILS\_ROOT: . Application Trace | Framework Trace | Full Trace ## #{RAILS\_ROOT}…Ruby/lib/ruby/gems/1.8/gems/actionpack-1.10.2/lib/action\_view/helpers/url\_helper.rb:18:in `url_for' #{RAILS_ROOT}...Ruby/lib/ruby/gems/1.8/gems/actionpack-1.10.2/lib/action_view/helpers/url_helper.rb:49:in`link\_to’ … …the same problem is with e.g link\_to\_remote() ## My includes are: ## include ActionView::Helpers::JavaScriptHelper include ActionView::Helpers::TagHelper include ActionView::Helpers::FormOptionsHelper include ActionView::Helpers::FormTagHelper include ActionView::Helpers::UrlHelper ## The url\_helper.rb (line numbers are included) ## 16: def url\_for(options = {}, \*parameters\_for\_method\_reference) 17: options = { :only\_path =\> true }.update(options.symbolize\_keys) if options.kind\_of? Hash 18: @controller.send(:url\_for, options, \*parameters\_for\_method\_reference) 19: end I also found on the web a parameter called :controller =\> ‘ctrl\_name’ which I thought could solve my problems since @controller at line 18 seems to be nil. But I cant get it to work and I have not found any documentation around it! /Rickard rickthemick wrote: > Hi! > I cant use funtions like link\_to\_remote in self defined calsses/objects > used from within my controller? Is there a readon for this, I dont > understand what libraries etc I need to include to get it running! > > Best regards > /Rickard ---
**Author:** ![rickthemick](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/6bbea6/32.png) [@rickthemick](https://www.ruby-forum.com/u/rickthemick)\ **Post date:** [December 5, 2005, 6:47pm UTC](https://www.ruby-forum.com/t/link-to-remote/93658/3 "2005-12-05T18:47:42Z")
On Dec 5, 2005, at 12:02 AM, rickthemick wrote: > NoMethodError in Init\_test#index > #{RAILS\_ROOT}…Ruby/lib/ruby/gems/1.8/gems/actionpack-1.10.2/lib/ > include ActionView::Helpers::TagHelper > (options.symbolize\_keys) if > > > Best regards > > /Rickard Rickard- ``` Link_to_remote and friends are meant to be used in your views only. ``` Why are you trying to use them in your controller? Surely there is a workaround you can use to move the code to the view where it belongs? Cheers- -Ezra Z. Yakima Herald-Republic WebMaster [http://yakimaherald.com](http://yakimaherald.com) 509-577-7732 removed\_email\_address@domain.invalid ---
**Author:** ![rickthemick](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/6bbea6/32.png) [@rickthemick](https://www.ruby-forum.com/u/rickthemick)\ **Post date:** [December 5, 2005, 6:09pm UTC](https://www.ruby-forum.com/t/link-to-remote/93658/4 "2005-12-05T18:09:52Z")
> ## I want to do this in the object created from my controller: > > link\_to(“MyPage”, { :action =\> “run” }, :popup =\> [‘new\_window’, > ‘height=300,width=600’]) > > * * * Is there a reason you can’t do this in your view? ---
**Author:** ![rickthemick](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/6bbea6/32.png) [@rickthemick](https://www.ruby-forum.com/u/rickthemick)\ **Post date:** [December 6, 2005, 9:46am UTC](https://www.ruby-forum.com/t/link-to-remote/93658/5 "2005-12-06T09:46:44Z")
Seems to be no problem at all after taking a look at my code, thanks again for your input! /R ---
**Author:** ![rickthemick](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/6bbea6/32.png) [@rickthemick](https://www.ruby-forum.com/u/rickthemick)\ **Post date:** [December 6, 2005, 8:32am UTC](https://www.ruby-forum.com/t/link-to-remote/93658/6 "2005-12-06T08:32:05Z")
ezra wrote: > On Dec 5, 2005, at 12:02 AM, rickthemick wrote: > > > NoMethodError in Init\_test#index > > #{RAILS\_ROOT}…Ruby/lib/ruby/gems/1.8/gems/actionpack-1.10.2/lib/ > > include ActionView::Helpers::TagHelper > > (options.symbolize\_keys) if > > > > > Best regards > > > /Rickard > > Rickard- > > Link\_to\_remote and friends are meant to be used in your views only. > Why are you trying to use them in your controller? Surely there is a > workaround you can use to move the code to the view where it belongs? > > Cheers- > -Ezra Z. > Yakima Herald-Republic > WebMaster > [http://yakimaherald.com](http://yakimaherald.com) > 509-577-7732 > removed\_email\_address@domain.invalid Hi all! Thanks for your replies and directions. Well, the thing is that the code is quite complex and I probably have deceases from previous server side scripting. When “link\_to\_remote” worked with just a few includes (in the controller) I though this was appropriate. In more detail I want to update multiple 's and in order to do this I generate javascript funtions in one special which updated the other using update\_element\_function, like this: The update\_element\_function contains the generated HTML string (including the output of link\_to\_remote calls) and I guess this is not possible to do in the view… /R