Ruby-on-rails rake db:migrate 似乎在生产中不起作用
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rake db:migrate doesn't seem to work in production
提问by Jason Swett
I have two instances of my app: one for development, one for production. My development database is called snip_developmentand my production database is called snip.
我的应用程序有两个实例：一个用于开发，一个用于生产。我的开发数据库被调用snip_development，我的生产数据库被调用snip。
I've been doing migrations all along in my development environment and it's been going just fine. I recently created a production instance of my app but rake db:migratedoesn't seem to have any effect. After I run rake db:migrateand log into my database server, I can see that snip_developmenthas all the tables I expect it to but snipdoesn't have any tables at all.
我一直在我的开发环境中进行迁移，并且一切顺利。我最近创建了我的应用程序的生产实例，但rake db:migrate似乎没有任何效果。在我运行rake db:migrate并登录到我的数据库服务器后，我可以看到它snip_development拥有我期望的所有表，但snip根本没有任何表。
I suspect the problem is that rake db:migrateis running on snip_developmentinstead of snipand that's why I'm not seeing anything happen.
我怀疑问题在于它rake db:migrate正在运行snip_development而不是，snip这就是为什么我没有看到任何事情发生。
How do I get my migrations to work on my production database?
如何让我的迁移在我的生产数据库上工作？
回答by Jason Swett
Sometimes I forget about Google. The answer is this:
有时我会忘记谷歌。答案是这样的：
rake db:migrate RAILS_ENV=production
回答by yohanes
For me the answer above not works. I have to add bundle execto make it works.
对我来说，上面的答案不起作用。我必须添加bundle exec才能使其正常工作。
bundle exec rails db:migrate RAILS_ENV=production
