Rails, how to migrate data from development sqlite

问题:

With Rails, how do you migrate data from development sqlite3 database to production MySQL database?

How to make it easier?

回答1:

You should use a gem like YamlDB. Install the Gem and then use the following rake tasks

rake db:data:dump  
RAILS_ENV=production rake db:data:load 

The first command dumps the contents of dev database to a file called db/data.yml

Also, please remember that this must be used in addition to rake db:schema:dump|load tasks as this only ports the data assuming the schema is already in place

回答2:

Assuming your database configurations are properly set up in config/database.yml, the following should get the database structure set up in production for you.

Runs against development database by default:

rake db:schema:dump

Run this against your production database by virtue of the RAILS_ENV environment variable:

rake RAILS_ENV=production db:schema:load