Question

我进行了一次新迁移，以便在我的成分有效记录中添加 price 列。尽管如此，当我运行 rails db：migrate 时，仍然收到错误消息，指出表成分不存在。这是我的控制台命令：

 C:\Users\andri\Desktop\hoagieShop\hoagieShop>rails generate migration 
 AddPriceToIngredients price:decimal, false:null --force
  invoke  active_record
  remove    db/migrate/20190124075954_add_price_to_ingredients.rb
  create    db/migrate/20190124080657_add_price_to_ingredients.rb

C:\Users\andri\Desktop\hoagieShop\hoagieShop>rails db:migrate
== 20190123201200 RemovePriceFromIngrendients: migrating 
======================
-- remove_column(:ingrendients, :price, :decimal)
rails aborted!
StandardError: An error has occurred, this and all later migrations 
canceled:
Could not find table ingrendients 
C:/Users/andri/Desktop/hoagieShop/hoagieShop/db/migrate/201901232 
01200_remove_price_from_ingrendients.rb:3:in change
bin/rails:4:in require
bin/rails:4:in <main>

Caused by:
ActiveRecord::StatementInvalid: Could not find table ingrendients


C:/Users/andri/Desktop/hoagieShop/hoagieShop/db/migrate/20190123201200_
remove_pr 
ice_from_ingrendients.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)

我已删除并再次添加了此迁移几次，因此我不确定它是否起任何作用。有谁知道为什么会这样吗？感谢您的帮助！

Answer 1

这似乎是您20190123201200_remove_price_from_ingrendients.rb迁移中的简单错字，而不是您生成的迁移中的错字，请参阅：

-- remove_column(:ingrendients, :price, :decimal)

可能应该是ingredients而不是ingrendients（在n之前的dients之外）

Rails的迁移回馈找不到表错误

1 个答案: