How do you rake a Heroku database?

Question

I have an application on Heroku. However, whenever I change my database locally and then push the changes to the application, the database doesn't not change.

I realized that I need to run a rake on the Heroku database. However when I try heroku rake db:migrate I get the following error.

rake aborted! uninitialized constant Rake::DSL`

How do I solve this problem?

I've been improvising with heroku db:push, but that will not be able to hold because it deletes the current database.

score 2 · Accepted Answer · answered Jul 15 '11 at 18:45

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If you are using the new Cedar Stack, you should use

heroku run rake db:migrate

answered Jul 15 '11 at 18:45

Juanda

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How do you move from default stack to cedar? – Vasseurth Jul 15 '11 at 20:09
I don't know if that's possible, as far as I know you should create a new application with something like: heroku create --stack cedar and then push your git repo to it. I also had some problems with my Gemfile. This one https://gist.github.com/040c2e18ef8708a30bf4 worked so far for me on the Cedar stack. – Juanda Jul 21 '11 at 19:19

score 1 · Answer 2 · answered Jul 13 '11 at 17:35

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Use:

heroku rake db:version

Source:

http://devcenter.heroku.com/articles/rake

answered Jul 13 '11 at 17:35

Swift

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eggie5 · Answer 3 · 2011-07-13T21:30:21.290

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Append w/ "heroku" or just type "heroku" in your terminal for instructions

heroku rake db:migrate

edited Jul 13 '11 at 21:30

answered Jul 13 '11 at 17:34

eggie5

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this should be heroku rake db:migrate – John Beynon Jul 13 '11 at 19:09

score 0 · Answer 4 · edited May 23 '17 at 11:48

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Your error for rake aborted! Uninitialized constant Rake::DSL is probably down to rake versions - see Stack Overflow question Ruby on Rails and Rake problems: uninitialized constant Rake::DSL for a fix.

edited May 23 '17 at 11:48

Community

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answered Jul 13 '11 at 19:11

John Beynon

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How do you rake a Heroku database?

4 Answers4