迁移到Ruby on Rails中的设计

Question

I have an existing model that uses bcrypt to encrypt the user password. I wonder how I could migrate to use devise? Do I still install devise the normal way and change the model attribute via database migration?

Answer 1

Add devise to your Gemfile, run bundle install , then rails generate devise ModelName (change ModelName to actual name of your model). This should add all needed things to your model as well as create a migration. I think devise will know, that your model already exists and it won't try to create new table, but it will modify existing one instead. Then just run rake db:migrate , restart server and you should be good to go.

Just to be sure, use git or some other versioning system. It's been a while since I last tried this, so make sure you can easily go back, if something goes wrong.