# Multipart form\_tag

**URL:** <https://www.ruby-forum.com/t/multipart-form-tag/135815>\
**Category:** Rails\
**Created:** [April 25, 2008, 8:20am UTC](https://www.ruby-forum.com/t/multipart-form-tag/135815 "2008-04-25T08:20:10Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![blair](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/c37758/32.png) [@blair](https://www.ruby-forum.com/u/blair)\
**Post date:** [April 25, 2008, 8:20am UTC](https://www.ruby-forum.com/t/multipart-form-tag/135815/1 "2008-04-25T08:20:10Z")

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I’m new to ruby, working on the book from Christian Hellsten & Jarkko  
Laine writen for RoR 1, so I had to adapt for RoR 2.  
I got the error :  
undefined local variable or method `multipart’ for  
#\<#Class:0xb714d388:0xb714d360\>  
Code :  
1:

# Editing book
  
2:  
3: \<% form\_tag( {:action =\> ‘update’, :id =\> @book}, multipart =\> true )  
do %\>  
4: \<%= render :partial =\> ‘form’ %\>  
5: \<%= submit\_tag ‘Edit’ %\>  
6: \<% end %\>  
I tried several variants, some module missing ??  
Thanks for any help.

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**Author:** ![blair](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/c37758/32.png) [@blair](https://www.ruby-forum.com/u/blair)\
**Post date:** [April 25, 2008, 11:01am UTC](https://www.ruby-forum.com/t/multipart-form-tag/135815/2 "2008-04-25T11:01:03Z")

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just a typo, multipart should be :multipart

> 3: \<% form\_tag( {:action =\> ‘update’, :id =\> @book}, :multipart =\> true )  
> do %\>

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<div class="post-metadata">

**Author:** ![blair](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/b/c37758/32.png) [@blair](https://www.ruby-forum.com/u/blair)\
**Post date:** [April 25, 2008, 11:32am UTC](https://www.ruby-forum.com/t/multipart-form-tag/135815/3 "2008-04-25T11:32:37Z")

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Thorsten M. wrote:

> just a typo, multipart should be :multipart
> 
> > 3: \<% form\_tag( {:action =\> ‘update’, :id =\> @book}, :multipart =\> true )  
> > do %\>

Thanks a lot, more obvious, more difficult to see sometimes!