clearing rails app database on heroku production site

问题

So I'm new to ROR and Heroku and need a little help. I've created an app and have deployed it; however, I'd like to clear out the database associated with it. Meaning I'd like to clear any users (and their attached data) that have been created thus far.

I've basically created several phony accounts to test out whether the database on the production site works, but now i'd like to clear this out, and start with a fresh database.

Is this possible without deleting the database entirely?

Any help would be sincerely appreciated. Thank you very much for your time!

回答1:

You can use heroku pg:reset DATABASE command to reset the entire database. The command will simply drop and create the database.

You have to use heroku rake db:migrate to create the tables then.

Alternatively you can use rake db:reset command locally and then run heroku db:push to update the production db.

回答2:

heroku pg:reset DATABASE --confirm {app-name}

heroku run rake db:migrate

heroku run rake db:seed

回答3:

heroku rake db:reset
//or:    
heroku run rake db:reset

The first one is an old one and the second is latest.

回答4:

The 2013 way to do this is:

Enter heroku pg:reset DATABASE in your console and then enter in your app name when prompted. This will drop the entire database -- tables, rows, columns, all of its data, everything.

Then, enter heroku run rake db:migrate. This will create the same table, rows, and columns, but without any object data.

回答5:

The current way is:

heroku pg:reset DATABASE_URL --confirm <APP_NAME>

回答6:

The current Cedar stack's proper syntax for shared databases is:

heroku pg:reset SHARED_DATABASE my-database-name-1294

(Replace "my-database-name-1294" with whatever is before the .herokuapp.com in your URL)

It'll then ask you this:

----> Resetting SHARED_DATABASE (DATABASE_URL)

 !    WARNING: Potentially Destructive Action
 !    This command will affect the app: my-database-name-1294
 !    To proceed, type "my-database-name-1294" or re-run this command with --confirm my-database-name-1294

Just retype "my-database-name-1294" there and it'll reset everything.

回答7:

To reset your database

run like bellow

heroku pg:reset SHARED_DATABASE --confirm APP_NAME

this works very well for my

回答8:

Yes, you can either use SQL methods to do it or perhaps just use the Rails Console to do it from the command line and call the @users.destroy_all method. This article explains how to use the console from Heroku.

回答9:

If you have two servers - production and staging, and you want to add the database from production to staging

heroku pg:reset DATABASE --remote staging
heroku pgbackups:restore DATABASE URL_OF_DATABASE --remote staging
heroku run rake db:migrate --remote staging

URL_TO_DATABASE - an aws or dropbox url for the dump.

This worked for me!