我想修改Devise以使其與使用PostgreSQL的UUID主鍵的用戶表一起工作。修改設計以支持UUID主鍵
這裏是遷移:
class DeviseCreateUsers < ActiveRecord::Migration
def change
create_table :users, id: false do |t|
t.uuid :uuid, null: false
# ...
end
change_table :users do |t|
t.index :uuid, unique: true
# ...
end
end
def migrate(direction)
super
if direction == :up
# This is only necessary because the following does not work:
# t.uuid :uuid, primary: true, null: false
execute "ALTER TABLE users ADD PRIMARY KEY (uuid);"
end
end
end
這裏是User
型號:
class User < ActiveRecord::Base
primary_key = :uuid
devise :database_authenticatable, :recoverable, :registerable,
:rememberable, :trackable, :validatable
validates :uuid, presence: true
before_validation :ensure_uuid
def ensure_uuid; self.uuid ||= SecureRandom.uuid end
end
以下是錯誤:
PG::Error: ERROR: operator does not exist: uuid = integer
LINE 1: ...ECT "users".* FROM "users" WHERE "users"."uuid" = 1 ORDER...
^
HINT: No operator matches the given name and argument type(s). You might need to add explicit type casts.
: SELECT "users".* FROM "users" WHERE "users"."uuid" = 1 ORDER BY "users"."uuid" ASC LIMIT 1
Extracted source (around line #5):
1 .navbar-inner
2 .container
3 = a_nav_tag "App", root_path
4 - if user_signed_in?
5 %ul.nav.pull-right
6 %li.dropdown#user_menu
7 %a.dropdown-toggle(data-toggle="dropdown" href="#")
正如你可以在上面看到,user_signed_in?
被打破。我希望有一些變化需要從「常規」自動遞增ID移動到UUID。
現在,我只是發佈這個問題。我今天晚些時候會對此表示震驚。如果你碰巧知道如何做到這一點 - 或者瞭解設計分支,我會很感激。