我正在使用Devise迁移文件。原来是这样的:更新了rails3迁移,但结果不显示后耙:db迁移
class DeviseCreateUsers < ActiveRecord::Migration
def self.up
create_table(:users) do |t|
t.database_authenticatable :null => false
t.recoverable
t.rememberable
t.trackable
# t.encryptable
# t.confirmable
# t.lockable :lock_strategy => :failed_attempts, :unlock_strategy => :both
# t.token_authenticatable
t.timestamps
end
add_index :users, :email, :unique => true
add_index :users, :reset_password_token, :unique => true
# add_index :users, :confirmation_token, :unique => true
# add_index :users, :unlock_token, :unique => true
# add_index :users, :authentication_token, :unique => true
end
def self.down
drop_table :users
end
end
我想补充这样的3列:
t.first_name t.last_name t.organization_name
所以我迁移文件看起来像这样一次我所做的更改:
class DeviseCreateUsers < ActiveRecord::Migration
def self.up
create_table(:users) do |t|
t.database_authenticatable :null => false
t.recoverable
t.rememberable
t.trackable
t.first_name
t.last_name
t.organization_name
# t.encryptable
# t.confirmable
# t.lockable :lock_strategy => :failed_attempts, :unlock_strategy => :both
# t.token_authenticatable
t.timestamps
end
add_index :users, :email, :unique => true
add_index :users, :reset_password_token, :unique => true
# add_index :users, :confirmation_token, :unique => true
# add_index :users, :unlock_token, :unique => true
# add_index :users, :authentication_token, :unique => true
end
def self.down
drop_table :users
end
end
然后在命令行中我跑这个命令:
rake db:migrate
,并将所得db表没有反映出我尝试添加列。下面是它的样子:
describe users;
+------------------------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------------------+--------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| email | varchar(255) | NO | UNI | | |
| encrypted_password | varchar(128) | NO | | | |
| reset_password_token | varchar(255) | YES | UNI | NULL | |
| reset_password_sent_at | datetime | YES | | NULL | |
| remember_created_at | datetime | YES | | NULL | |
| sign_in_count | int(11) | YES | | 0 | |
| current_sign_in_at | datetime | YES | | NULL | |
| last_sign_in_at | datetime | YES | | NULL | |
| current_sign_in_ip | varchar(255) | YES | | NULL | |
| last_sign_in_ip | varchar(255) | YES | | NULL | |
| created_at | datetime | YES | | NULL | |
| updated_at | datetime | YES | | NULL | |
+------------------------+--------------+------+-----+---------+----------------+
任何想法,为什么我试图更改不显示出来?我如何强制更改发生?
谢谢!
做一个重做给了这个错误:耙子中止! 发生错误,所有后来的迁移取消: 未定义的方法'first_name'为# –
GeekedOut
2011-05-20 22:33:42
我还将这个:first_name,:last_name,:organization_name添加到我的users.rb文件,但它似乎没有帮助。 – GeekedOut 2011-05-20 22:46:24
看起来您最好将所有更改保存到迁移中,手动将其迁移下来:rake db:migrate:down VERSION = nnnnnnnnnnnn',重新应用您的更改并按正常方式执行迁移。改变迁移通常不是一个好主意,最好的做法是修改一个新的数据库。 – 2011-05-20 23:00:17