Rails 4.0.1 on Heroku, can't create database

Question

I can\'t get rake db:migrate to run on my rails 4.0.1 app on Heroku.

I\'m guessing that I don\'t have postgres configured properly... but reading the docs on heroku

Answer 1

Run

heroku pg:reset DATABASE_URL

and you are done.

Answer 2

I should've read the stack trace more closely. My factories.rb was creating user objects as attributes for other factories. Wrapping them in a block fixed it:

FactoryGirl screws up rake db:migrate process

Answer 3

I would first try

heroku restart

heroku rake db:migrate

If that doesn't work, then try.

heroku pg:reset DATABASE_URL   #Literally type in heroku pg:reset DATABASE_URL

heroku rake db:migrate

Answer 4

To drop and recreate database

1. Login to heroku in terminal
2. cd into your app
3. Run

heroku pg:reset DATABASE

Answer 5

Jason's answer might fix your problem, but I wanted to expand on why you got the error and how to fix it.

1. You can't run "rake db:setup" on Heroku, because it will try to create a database, and your database already exists on Heroku

2. In your database.yml, you should read the database url from the environment variable like: production: url: <%= ENV["DATABASE_URL"] %>

3. I think you are getting the 2nd error because you have some version error in your migrations, runing them from the begining should fix it : rake db:migrate VERSION=0