我试图设计添加到基于恩基应用与Omniauth已经实现,现有的用户模型。 以下github上设计教程,并试图在这里或在设计维基贴出几乎每一个可能的解决方案之后,我仍然不能得到移植到run.I得到这个错误,运行耙分贝时,我得到:迁移。 我知道我需要注释掉email列(它存在于用户模式)。 我试图注释掉取其扔“已经存在”的错误,但也不能工作。
$ rake db:migrate
== AddDeviseToUsers: migrating ===============================================
-- change_table(:users)
rake aborted!
An error has occurred, this and all later migrations canceled:
PG::DuplicateColumn: ERROR: column "encrypted_password" of relation "users" already exists
: ALTER TABLE "users" ADD COLUMN "encrypted_password" character varying(255) DEFAULT '' NOT NULL/Users/josecfernandezortiz/.rvm/gems/ruby-2.0.0-p353/gems/activerecord-4.0.2/lib/active_record/connection_adapters/postgresql/database_statements.rb:128:in `async_exec'
这是当前模式:
create_table "users", force: true do |t|
t.string "name", null: false
t.string "email", null: false
t.datetime "created_at"
t.datetime "updated_at"
t.string "provider"
t.string "uid"
t.string "role"
t.datetime "last_logged_in"
end
这是由设计所产生的迁移:
class AddDeviseToUsers < ActiveRecord::Migration
def self.up
change_table(:users) do |t|
## Database authenticatable
# t.string :email, :null => false, :default => ""
t.string :encrypted_password, :null => false, :default => ""
## Recoverable
t.string :reset_password_token
t.datetime :reset_password_sent_at
## Rememberable
t.datetime :remember_created_at
## Trackable
t.integer :sign_in_count, :default => 0, :null => false
t.datetime :current_sign_in_at
t.datetime :last_sign_in_at
t.string :current_sign_in_ip
t.string :last_sign_in_ip
## Confirmable
# t.string :confirmation_token
# t.datetime :confirmed_at
# t.datetime :confirmation_sent_at
# t.string :unconfirmed_email # Only if using reconfirmable
## Lockable
# t.integer :failed_attempts, :default => 0, :null => false # Only if lock strategy is :failed_attempts
# t.string :unlock_token # Only if unlock strategy is :email or :both
# t.datetime :locked_at
# Uncomment below if timestamps were not included in your original model.
# 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
end
def self.down
# By default, we don't want to make any assumption about how to roll back a migration when your
# model already existed. Please edit below which fields you would like to remove in this migration.
raise ActiveRecord::IrreversibleMigration
end
end
我也试着注释掉t.string :encrypted_password, :null => false, :default => ""
同样的结果。 谢谢!