在heroku上部署Rails应用

Question

Hey I'm afraid I should ask a rookie question :

After push my app to heroku. I got error of no database

This is the command I use

heroku rake db:migrate

My app can run locally with no problem, but I notice the database file only in development. and my test evironment only use rails server and localhost:3000

anyone tell me how to make the database in production mode in heroku.

Thanks

here's the heroku log file:

here's the logs

Started GET "/drummers/1" for 221.9.247.14 at Sat Dec 18 06:17:40 -0800 2010 Processing by DrummersController#show as HTML Parameters: {"id"=>"1"} Completed in 167ms

ActiveRecord::RecordNotFound (Couldn't find Drummer with ID=1): app/controllers/drummers_controller.rb:11:in `show'

I think it may due to the datebase,config file, become I use sqlite3 in local test, and all the migration file is development prefix,

Answer 1

It's not telling you that you have no Database.

It's telling you that it can't find a specific record

(Couldn't find Drummer with ID=1): 

It's likely that you have code that's doing Drummer.find(1) and that doesn't exist on your production environment.

Recommend you either:

• create a seeds file (heroku rake db:seed) rails cast
• push your entire database to heroku (heroku db:push) [make sure you understand this will wipe out your production database]

Answer 2

Heroku creates a database for each application deployed to it (no need to run heroku rake db:create . Here are the commands you should be using to deploy a Rails application to Heroku:

git init
git add .
git commit -m "initial import"
heroku create
git push heroku master
heroku rake db:migrate
heroku open

Answer 3

如果您没有根据Docs的要求，我相信Heroku会在部署时为您创建一个新的database.yml。