根据文档,我运行以下行(并得到响应)为回形针创建迁移
[imageuploading!tme]$ rails g paperclip user avatar
create db/migrate/20120824134503_add_attachment_avatar_to_users.rb
[imageuploading!tme]$ rake db:migrate
== AddAttachmentAvatarToUsers: migrating =====================================
-- change_table(:users)
-> 0.0338s
== AddAttachmentAvatarToUsers: migrated (0.0339s) ============================
迁移成功运行,但正如您所见,它在用户表中没有任何变化。
迁移代码的相关位是标准:
change_table :users do |t|
t.has_attached_file :avatar
end
回形针已成功安装为 gem
为什么 has_attached_file 助手(?)不起作用?