# Nested form with a N-N relation and a predefined list of elements to choose

**URL:** <https://www.ruby-forum.com/t/nested-form-with-a-n-n-relation-and-a-predefined-list-of-elements-to-choose/194442>\
**Category:** Rails\
**Created:** [September 6, 2010, 4:39pm UTC](https://www.ruby-forum.com/t/nested-form-with-a-n-n-relation-and-a-predefined-list-of-elements-to-choose/194442 "2010-09-06T16:39:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![benoitdinocourt](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/87869e/32.png) [@benoitdinocourt](https://www.ruby-forum.com/u/benoitdinocourt)\
**Post date:** [September 6, 2010, 4:39pm UTC](https://www.ruby-forum.com/t/nested-form-with-a-n-n-relation-and-a-predefined-list-of-elements-to-choose/194442/1 "2010-09-06T16:39:25Z")

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Hi,

I recently had to deal with nested form, and I found quite complex to  
handle it with my situation.

I have a list of choices and want to allow the user to use some from a  
predefined list, by using checkboxes.

I posted the question on Stack Overflow a few days ago, but nobody  
answered yet.

So, to not duplicate the text, here is the link:

> <https://stackoverflow.com/questions/3622312/how-to-write-properly-a-nested-form-with-a-n-n-relation>

Regards,  
B.D.