1
我有一个简单的模型:问题的HABTM和连接表中的Rails
class User < ActiveRecord::Base
has_and_belongs_to_many :roles
end
class Role < ActiveRecord::Base
has_and_belongs_to_many :users
end
我创建了一个简单的连接表:
class CreateUsersRoles < ActiveRecord::Migration
def self.up
create_table :users_roles, :id => false do |t|
t.integer :user_id
t.integer :role_id
t.timestamps
end
end
def self.down
drop_table :users_roles
end
end
迁移后,shema.rb是以下几点:
create_table "roles", :force => true do |t|
t.string "name"
t.datetime "created_at"
t.datetime "updated_at"
end
create_table "users", :force => true do |t|
t.string "login"
t.string "password"
t.datetime "created_at"
t.datetime "updated_at"
end
create_table "users_roles", :id => false, :force => true do |t|
t.integer "user_id"
t.integer "role_id"
t.datetime "created_at"
t.datetime "updated_at"
end
这里的条目以相同的顺序呈现,如“schema.rb”
我安排在灯具下列方式:
# roles.yml
user:
name: user
admin:
name: admin
moderator:
name: moderator
# users.yml
User1:
login: User1
password: User1
roles: user
User2:
login: User2
password: User2
roles: admin, moderator
User3:
login: User3
password: User3
roles: moderator
,并得到了一个问题:在 “耙分贝:灯具:负荷” 轨道抱怨连接表的名称:
的SQLite3 ::的SQLException :没有这样的表:roles_users:DELETE FROM “roles_users” WHERE 1 = 1
的问题是 - 为什么它预计 “roles_users”,而该表是 “users_roles”?
非常感谢!有用 ! – AntonAL 2010-07-20 08:55:28