# Nested routes error

**URL:** <https://www.ruby-forum.com/t/nested-routes-error/186945>\
**Category:** Rails\
**Created:** [April 14, 2010, 7:37pm UTC](https://www.ruby-forum.com/t/nested-routes-error/186945 "2010-04-14T19:37:09Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rpm](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/c57346/32.png) [@rpm](https://www.ruby-forum.com/u/rpm)\
**Post date:** [April 14, 2010, 7:37pm UTC](https://www.ruby-forum.com/t/nested-routes-error/186945/1 "2010-04-14T19:37:09Z")

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Hello everyone,

I have a problem using nested routes when creating a nested object.

I use

map.resource :simulation\_process,  
:has\_many =\> :simulations

Everything works fine except with this

\<% form\_for [@simulation\_process, @simulation] do |simulation\_form| %\>

that generates a route like this…

/simulation\_process/simulations.%23%3Csimulationprocess:0x2aaaae4e8bc0%3E

Anybody knows why??