# File\_column url\_for\_file returns nil

**URL:** <https://www.ruby-forum.com/t/file-column-url-for-file-returns-nil/51658>\
**Category:** Rails\
**Created:** [January 5, 2006, 1:04pm UTC](https://www.ruby-forum.com/t/file-column-url-for-file-returns-nil/51658 "2006-01-05T13:04:09Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![mikkel](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e36b37/32.png) [@mikkel](https://www.ruby-forum.com/u/mikkel)\
**Post date:** [January 5, 2006, 1:04pm UTC](https://www.ruby-forum.com/t/file-column-url-for-file-returns-nil/51658/1 "2006-01-05T13:04:09Z")

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Hi Guys,

I have been struggling with this one for a while…

file\_column 0.3.1

My file gets uploaded and thumbnailed correctly,  
however \<%= url\_for\_file\_column(“item”, “image”) %\> returns nil…

I have tracked the problem to line 60 in file\_column\_helper.rb but I  
cant figure out why my model would return nil in this case…

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**Author:** ![mikkel](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e36b37/32.png) [@mikkel](https://www.ruby-forum.com/u/mikkel)\
**Post date:** [January 5, 2006, 5:20pm UTC](https://www.ruby-forum.com/t/file-column-url-for-file-returns-nil/51658/2 "2006-01-05T17:20:37Z")

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mikkel wrote:

> My file gets uploaded and thumbnailed correctly,  
> however \<%= url\_for\_file\_column(“item”, “image”) %\> returns nil…

Do you have a string(255) column named ‘image’ in your item table? I had  
trouble with this too.

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<div class="post-metadata">

**Author:** ![mikkel](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e36b37/32.png) [@mikkel](https://www.ruby-forum.com/u/mikkel)\
**Post date:** [February 1, 2006, 1:56pm UTC](https://www.ruby-forum.com/t/file-column-url-for-file-returns-nil/51658/3 "2006-02-01T13:56:01Z")

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I cant really remember (I skipped file column and did my self…)

Would I need this column??

Mikkel

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<div class="post-metadata">

**Author:** ![mikkel](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/e36b37/32.png) [@mikkel](https://www.ruby-forum.com/u/mikkel)\
**Post date:** [February 1, 2006, 7:22pm UTC](https://www.ruby-forum.com/t/file-column-url-for-file-returns-nil/51658/4 "2006-02-01T19:22:21Z")

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On 2/1/06, Mikkel B. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> I cant really remember (I skipped file column and did my self…)
> 
> Would I need this column??

yes, the file’s name is stored in this column.

Sebastian