Setting up mongomapper for multiple databases

问题

How can I have one mongo model go to one database and another using another database?

I've been send this link

https://github.com/jnunemaker/mongomapper/blob/master/lib/mongo_mapper/plugins/persistence.rb

and this stackoverflow answer is like my answer

MongoMapper and more than one databases in application

Where in my application do I set the connection for my Models?

回答1:

The source link you posted is what you want. Those methods are all mixed-in to your models, so:

class MyModel
  include MongoMapper::Document
  connection(Mongo::Connection.new('localhost', 27017))
  set_database_name "my_database"
  # ...
end

Since it's just a Mongo::Connection, you can use any of its supported options. (source)

来源：https://stackoverflow.com/questions/9531900/setting-up-mongomapper-for-multiple-databases