# Additional parameter for nested resources **URL:** \ **Category:** Rails\ **Created:** [July 26, 2008, 2:27pm UTC](https://www.ruby-forum.com/t/additional-parameter-for-nested-resources/144193 "2008-07-26T14:27:36Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![julian](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/74df32/32.png) [@julian](https://www.ruby-forum.com/u/julian)\ **Post date:** [July 26, 2008, 2:27pm UTC](https://www.ruby-forum.com/t/additional-parameter-for-nested-resources/144193/1 "2008-07-26T14:27:36Z")
Hi I’m working with rails 2.1.0 and with nested resources. My links i generate with the following helper: link\_to @state.name, [@country, @state] Everything works fine and the urls are correctly generated. But now I’d like to add an additional parameter to the url like: /country/1/state/2?category=2 The additional parameter will only be used for filtering in the show action, so I don’t want to add a new nested route. How can I generate an URL with such a parameter? I did not find any solution to this problem… Thanks very much for your help! Julian ---
**Author:** ![julian](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/74df32/32.png) [@julian](https://www.ruby-forum.com/u/julian)\ **Post date:** [July 26, 2008, 2:58pm UTC](https://www.ruby-forum.com/t/additional-parameter-for-nested-resources/144193/2 "2008-07-26T14:58:05Z")
On Sat, Jul 26, 2008 at 3:21 AM, Julian [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > But now I’d like to add an additional parameter to the url like: > /country/1/state/2?category=2 url\_for @state.name, [@country, @state], :category =\> 2 will do the trick – Gabriel L. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![julian](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/74df32/32.png) [@julian](https://www.ruby-forum.com/u/julian)\ **Post date:** [July 27, 2008, 6:38pm UTC](https://www.ruby-forum.com/t/additional-parameter-for-nested-resources/144193/3 "2008-07-27T18:38:20Z")
On Sun, Jul 27, 2008 at 6:00 PM, Julian [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > link\_to @state.name, [@country, @state] > > But url\_for expects only one parameter … Do I have the wrong rails > version?? Yes, It take only 1 argument, but, if you use link\_to @state.name, country\_state\_path(@country, @state, :catergory =\> 2) thats seems to work (a bit tested this time 🙂 ) but it is a bit longer. hope it will work – Gabriel L. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) ---
**Author:** ![julian](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/74df32/32.png) [@julian](https://www.ruby-forum.com/u/julian)\ **Post date:** [July 27, 2008, 6:06pm UTC](https://www.ruby-forum.com/t/additional-parameter-for-nested-resources/144193/4 "2008-07-27T18:06:44Z")
On 26 Jul., 14:57, “Gabriel L.” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > Everything works fine and the urls are correctly generated. > > > But now I’d like to add anadditionalparameterto the url like: > > /country/1/state/2?category=2 > > url\_for @state.name, [@country, @state], :category =\> 2 > > will do the trick But url\_for expects only one parameter … Do I have the wrong rails version?? Julian ---
**Author:** ![julian](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/74df32/32.png) [@julian](https://www.ruby-forum.com/u/julian)\ **Post date:** [July 27, 2008, 10:24pm UTC](https://www.ruby-forum.com/t/additional-parameter-for-nested-resources/144193/5 "2008-07-27T22:24:36Z")
On 27 Jul., 18:37, “Gabriel L.” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > But url\_for expects only oneparameter… Do I have the wrong rails > > version?? > > Yes, It take only 1 argument, but, if you use > > link\_to @state.name, country\_state\_path(@country, @state, :catergory =\> 2) > > thats seems to work (a bit tested this time 🙂 ) but it is a bit longer. > > hope it will work That really works, thanks! Unfortunately I’d like to use the link\_to helper with the array notation [@country, @state], because the resource is polymorphic. With link\_to(@state.name, [@country, @state], :catergory =\> 2), catgory is added as an attribute to the HTML link-tag. Do you have an other idea? A workaround would be to write a new link\_to helper… Julian ---
**Author:** ![julian](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/74df32/32.png) [@julian](https://www.ruby-forum.com/u/julian)\ **Post date:** [July 27, 2008, 10:44pm UTC](https://www.ruby-forum.com/t/additional-parameter-for-nested-resources/144193/6 "2008-07-27T22:44:31Z")
On Sun, Jul 27, 2008 at 9:59 PM, Julian [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Do you have an other idea? A workaround would be to write a new > link\_to helper… last idea… take a look at polymprphic\_url, and polymorphic\_path – Gabriel L. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)