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对不起,我的英文。 我搜索了该网站,但我找不到解决方案。 当我试图让轨道分贝:迁移给了我这个错误:Rails db:migrate用“未定义的局部变量或方法”限制“中止”为什么?
C:\PW\Sites\grota>rails db:migrate
== 20170209014957 CreateWholesalers: migrating ================================
-- create_table(:wholesalers)
-- limit()
rails aborted!
StandardError: An error has occurred, all later migrations canceled:
undefined local variable or method `limit' for # <CreateWholesalers:0x00000006bfc6a0>
C:/PW/Sites/grota/db/migrate/20170209014957_create_wholesalers.rb:7:in `block in change'
C:/PW/Sites/grota/db/migrate/20170209014957_create_wholesalers.rb:3:in `change'
bin/rails:4:in `require'
bin/rails:4:in `<main>'
NameError: undefined local variable or method `limit' for # <CreateWholesalers:0x00000006bfc6a0>
C:/PW/Sites/grota/db/migrate/20170209014957_create_wholesalers.rb:7:in `block in change'
C:/PW/Sites/grota/db/migrate/20170209014957_create_wholesalers.rb:3:in `change'
bin/rails:4:in `require'
bin/rails:4:in `<main>'
Tasks: TOP => db:migrate
(See full trace by running task with --trace)
这里是我的代码迁移:
class CreateWholesalers < ActiveRecord::Migration[5.0]
def change
create_table :wholesalers do |t|
t.string "brand_name", :limit => 25
t.string "username", :limit => 25
t.string "password_digest"
t.string "email", limit => 50
t.decimal "latitude"
t.decimal "longitude"
t.timestamps
end
end
end
预先感谢您。
谢谢,它的工作! –