rails g paperclip user avatar |
这样生成了一个migration file,下面这段是自动生成滴
01 | class AddAttachmentAvatarToUser< ActiveRecord::Migration |
02 | def self.up |
03 | add_column :users, :avatar_file_name, :string |
04 | add_column :users, :avatar_content_type, :string |
05 | add_column :users, :avatar_file_size, :integer |
06 | add_column :users, :avatar_updated_at, :datetime |
07 | end |
08 |
09 | def self.down |
10 | remove_column :users, :avatar_file_name |
11 | remove_column :users, :avatar_content_type |
12 | remove_column :users, :avatar_file_size |
13 | remove_column :users, :avatar_updated_at |
14 | end |
15 | end |