gistfile1.txt

It can be confusing, let me explain it:

When the removed feature was back and I wanted to invoke rake tasks that don't load :environment task (so no masochism) I was getting errors because those tasks treated my slave db as the only db. database.yml looked something like this:

production:
  database: slave
  master_database:
    database: master 

So I thought I will try to add slave_database and change the production db to master like this:

production:
  database: master
  slave_database:
    database: slave
  master_database:
    database: master

I wanted this config so it's  backward compatible with those tasks that don't know about masochism.

The problem was the removed feature: when slave_database: key is present then in effect the ActiveRecord::Base connection is not hijacked with proxy (ActiveReload::SlaveDatabase gets hijacked instead). Because of that the most default usage (where people want all AR::Base subclasses hijacked with conn proxy AND basic rake tasks functional)  was impossible.

It's of course still possible to configure masochism in the previous way:

ActiveReload::ConnectionProxy.setup_for ActiveReload::MasterDatabase, ActiveReload::SlaveDatabase