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I'm upgrading a RoR app that I inherited, from 1.8.7/2.3.? to 1.9/3.0.9 The app uses attachemnt_fu to allow users to upload photos, but when I try to display a photo on the home page, I get :

undefined method `public_filename' for "#<Photo:0x000000049f3838>":Photo

The model photo class that has_attachment is loading DB data (can see it in the debugger), but all the attachment_fu methods are 'undefined'. Same with any method explicitly defined in the model class (so is possible that it is not attachment_fu related)

Using attachment_fu which claims compatibility with rails 3.0.3

basicxman
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user828082
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1 Answers1

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As usual, I was looking in the wrong place.

The problem was the upgrade to attachment_fu, and I think the solution was buried in the documentation. As near as I can tell, the plugin upgrade did not work on my install - it left the older non-rails 3 compatible library on my disk, where ruby diligently hunted it down and loaded it.

When I searched my disk and manually 'rm'ed all trace of the older installation, the method was suddenly no longer undefined.

user828082
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