Hello Jordan,
I am not quiet sure. This is how my model looks like
class Picture < ActiveRecord::Base
has_attached_file :image,
:styles => { :medium =>
"300x300>", :thumb => "100x100>" },
:storage => :s3,
:s3_credentials =>
"#{Rails.root}/config/s3.yml",
:path =>
":class/:id/:style/:filename"
end
What should I add to it? I think the problem is in migration.
On Jan 13, 7:58 pm, Jordan Miller <[email protected]> wrote:
> did you add the definitions and functions to your model file?
>
> jordan
>
> On Jan 13, 2012, at 9:27 AM, Walter Lee Davis <[email protected]> wrote:
>
>
>
>
>
>
>
>
>
> > On Jan 13, 2012, at 4:44 AM, Karthikeyan wrote:
>
> >> Hello people,
>
> >> I installed paperclip gem with these following lines in gem file
>
> >> gem 'rmagick'
> >> gem "paperclip", "~> 2.0"
> >> gem 'aws-s3'
>
> >> I am using amazon S3.
>
> >> the problem came when I ran the migration which had the following
> >> migration code
>
> >> class AddImageColumnsToPicture < ActiveRecord::Migration
> >> def self.up
> >> change_table :pictures do |t|
> >> t.has_attached_file :image
> >> end
> >> end
>
> >> def self.down
> >> drop_attached_file :pictures, :image
> >> end
> >> end
>
> >> It gave the following error:
>
> >> An error has occurred, this and all later migrations canceled:
>
> >> undefined method `has_attached_file' for
> >> #<ActiveRecord::ConnectionAdapters::Table:0xb414d98>
>
> >> Any one knows how to fix it?
>
> > See if updating to the newest gem fixes it. (2.4.5 at the moment). I don't
> > recall seeing that helpful migration method the last time I used Paperclip,
> > so it may be newer than your gem.
>
> > Walter
>
> > --
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