# Validates\_presence\_of file fields **URL:** \ **Category:** Rails\ **Created:** [December 8, 2009, 10:12pm UTC](https://www.ruby-forum.com/t/validates-presence-of-file-fields/179968 "2009-12-08T22:12:22Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![tabassman](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9de0a6/32.png) [@tabassman](https://www.ruby-forum.com/u/tabassman)\ **Post date:** [December 8, 2009, 10:12pm UTC](https://www.ruby-forum.com/t/validates-presence-of-file-fields/179968/1 "2009-12-08T22:12:22Z")
I can’t seem to get validates\_presence\_of to work with file fields. It keeps on reporting the field is empty whether I put a file in or not. Is there a way to validate whether a file has been uploaded? ---
**Author:** ![tabassman](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9de0a6/32.png) [@tabassman](https://www.ruby-forum.com/u/tabassman)\ **Post date:** [December 9, 2009, 11:51am UTC](https://www.ruby-forum.com/t/validates-presence-of-file-fields/179968/2 "2009-12-09T11:51:31Z")
Victor T. wrote: > I can’t seem to get validates\_presence\_of to work with file fields. It > keeps on reporting the field is empty whether I put a file in or not. Is > there a way to validate whether a file has been uploaded? What is your database structure in relation to the file field? ---
**Author:** ![tabassman](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9de0a6/32.png) [@tabassman](https://www.ruby-forum.com/u/tabassman)\ **Post date:** [December 9, 2009, 2:45pm UTC](https://www.ruby-forum.com/t/validates-presence-of-file-fields/179968/3 "2009-12-09T14:45:35Z")
There is a varchar field I put in by mistake, but I’m not storing anything in it. Can that be causing the problem? Pale H. wrote: > Victor T. wrote: > > > I can’t seem to get validates\_presence\_of to work with file fields. It > > keeps on reporting the field is empty whether I put a file in or not. Is > > there a way to validate whether a file has been uploaded? > > What is your database structure in relation to the file field? ---
**Author:** ![tabassman](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9de0a6/32.png) [@tabassman](https://www.ruby-forum.com/u/tabassman)\ **Post date:** [December 9, 2009, 3:17pm UTC](https://www.ruby-forum.com/t/validates-presence-of-file-fields/179968/4 "2009-12-09T15:17:36Z")
Victor T. wrote: > There is a varchar field I put in by mistake, but I’m not storing > anything in it. Can that be causing the problem? > > Pale H. wrote: > > > Victor T. wrote: > > > > > I can’t seem to get validates\_presence\_of to work with file fields. It > > > keeps on reporting the field is empty whether I put a file in or not. Is > > > there a way to validate whether a file has been uploaded? > > > > What is your database structure in relation to the file field? No, that shouldn’t be causing the problem. Is it possible you can show us the code in relation to your problem? ---
**Author:** ![tabassman](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9de0a6/32.png) [@tabassman](https://www.ruby-forum.com/u/tabassman)\ **Post date:** [December 9, 2009, 4:00pm UTC](https://www.ruby-forum.com/t/validates-presence-of-file-fields/179968/5 "2009-12-09T16:00:51Z")
Victor T. wrote: > There is a varchar field I put in by mistake, but I’m not storing > anything in it. Can that be causing the problem? > > Pale H. wrote: > > > Victor T. wrote: > > > > > I can’t seem to get validates\_presence\_of to work with file fields. It > > > keeps on reporting the field is empty whether I put a file in or not. Is > > > there a way to validate whether a file has been uploaded? > > > > What is your database structure in relation to the file field? Ah I just realised. Could the problem be I’m using form\_remote\_for? ---
**Author:** ![tabassman](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/9de0a6/32.png) [@tabassman](https://www.ruby-forum.com/u/tabassman)\ **Post date:** [December 9, 2009, 4:25pm UTC](https://www.ruby-forum.com/t/validates-presence-of-file-fields/179968/6 "2009-12-09T16:25:41Z")
Victor T. wrote: > Victor T. wrote: > > > There is a varchar field I put in by mistake, but I’m not storing > > anything in it. Can that be causing the problem? > > > > Pale H. wrote: > > > > > Victor T. wrote: > > > > > > > I can’t seem to get validates\_presence\_of to work with file fields. It > > > > keeps on reporting the field is empty whether I put a file in or not. Is > > > > there a way to validate whether a file has been uploaded? > > > > > > What is your database structure in relation to the file field? > > Ah I just realised. Could the problem be I’m using form\_remote\_for? Try using something along the lines of: \<% remote\_form\_for(@class\_name) do |f| %\> … \<% end %\>