rake db:migrate doesn't seem to work in production

I have two instances of my app: one for development, one for production. My development database is called snip_development and my production database is called 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:migrate doesn't seem to have any effect. After I 开发者_StackOverflow中文版run rake db:migrate and log into my database server, I can see that snip_development has all the tables I expect it to but snip doesn't have any tables at all.

I suspect the problem is that rake db:migrate is running on snip_development instead of snip and that's why I'm not seeing anything happen.

How do I get my migrations to work on my production database?

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Sometimes I forget about Google. The answer is this:

rake db:migrate RAILS_ENV=production

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For me the answer above not works. I have to add bundle exec to make it works.

bundle exec rails db:migrate RAILS_ENV=production