我嘗試通過Rails控制檯向數據庫中插入值,但它不起作用。Ruby on Rails控制檯錯誤
第一命令是
U = users.create(:名稱=> 「鮑勃」,:地址=> 「都柏林」)
這是我運行所述第一命令
u=Users.create(:name=>"Ben",:address=>"Dublin")
(0.2ms) BEGIN
SQL (0.3ms) INSERT INTO `users` (`address`, `created_at`, `email`, `name`, `password`, `updated_at`) VALUES ('Dublin', '2012-04-16 23:15:48', NULL, 'Ben', NULL, '2012-04-16 23:15:48')
(9.1ms) COMMIT
=> #<Users id: 2, name: "Ben", password: nil, email: nil, address: "Dublin", created_at: "2012-04-16 23:15:48", updated_at: "2012-04-16 23:15:48">
後的輸出
這是第二個命令
噸= tweets.create(:狀態=> 「我是從擺錘鳴叫」,:用戶=> U)
NameError: undefined local variable or method `tweets' for main:Object
from (irb):4
from /opt/bitnami/ruby/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/commands/console.rb:47:in `start'
from /opt/bitnami/ruby/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/commands/console.rb:8:in `start'
from /opt/bitnami/ruby/lib/ruby/gems/1.9.1/gems/railties-3.2.1/lib/rails/commands.rb:41:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
推文應該是鳴叫。資本,因爲它的類名,紅寶石類名稱以大寫字母開頭。如果它的關係是User.find(id).tweets.create(:status =>「bla bla」),但在這種情況下,您不需要:user =>,因爲他會知道誰附加它。 By Magic – 2012-04-16 23:13:32
您好,感謝您的幫助,但是我在tweet表中創建了一個valeu,在用戶表中引用? – Ben 2012-04-16 23:38:10
這是user_id,所以我的意思是每條推文都有一個user_id。 – Ben 2012-04-16 23:38:54