# Nested has\_many :through - does Rails supported this at the moment? it seems not

**URL:** <https://www.ruby-forum.com/t/nested-has-many-through-does-rails-supported-this-at-the-moment-it-seems-not/159315>\
**Category:** Rails\
**Created:** [February 3, 2009, 12:37pm UTC](https://www.ruby-forum.com/t/nested-has-many-through-does-rails-supported-this-at-the-moment-it-seems-not/159315 "2009-02-03T12:37:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![greg](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/71c47a/32.png) [@greg](https://www.ruby-forum.com/u/greg)\
**Post date:** [February 3, 2009, 12:37pm UTC](https://www.ruby-forum.com/t/nested-has-many-through-does-rails-supported-this-at-the-moment-it-seems-not/159315/1 "2009-02-03T12:37:55Z")

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Hi,

Can someone clarify whether Rails current support nested has\_many,  
:through? For example:

has\_many :business\_items, :through =\> :ai\_allocations  
has\_many :bi\_allocations, :through =\> :business\_items # 2nd one  
here references a previous “:through”

I’ve seen discussion on blogs re support for this but I’m just trying  
to clarify whether this is currently in Rails or not. It didn’t seem  
to work for me when I tried.

–  
Greg  
[http://blog.gregnet.org/](http://blog.gregnet.org/)

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<div class="post-metadata">

**Author:** ![greg](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/71c47a/32.png) [@greg](https://www.ruby-forum.com/u/greg)\
**Post date:** [February 3, 2009, 12:45pm UTC](https://www.ruby-forum.com/t/nested-has-many-through-does-rails-supported-this-at-the-moment-it-seems-not/159315/2 "2009-02-03T12:45:43Z")

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i’ve seen / read those discussions as well (and found it pretty  
interesting), but afaik until now it’s not a rails feature. last time  
i checked it didn’t work for me either.

sorry.

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<div class="post-metadata">

**Author:** ![greg](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/71c47a/32.png) [@greg](https://www.ruby-forum.com/u/greg)\
**Post date:** [February 3, 2009, 12:53pm UTC](https://www.ruby-forum.com/t/nested-has-many-through-does-rails-supported-this-at-the-moment-it-seems-not/159315/3 "2009-02-03T12:53:22Z")

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thanks

2009/2/3 MaD [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> i’ve seen / read those discussions as well (and found it pretty  
> interesting), but afaik until now it’s not a rails feature. last time  
> i checked it didn’t work for me either.
> 
> sorry.
> 
> >

–  
Greg  
[http://blog.gregnet.org/](http://blog.gregnet.org/)