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?
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