Active Record multiple databases with same table schemas

Rails
1

We probably need to have a sinatra web server where different clients
through different sessions each have different databases but with the
same
tables.
If I have an active record class such as MyFoo, it would be ideal for it
to
be for table foo on either db1, db2, etc. If I have MyFoo1 and MyFoo2, I
can set
MyFoo as a constant to each of those ie MyFoo = MyFoo2 (MyFoo on
database
2), but every time I am in a new session I have to delete the old
constant
and set it to the new one. I am not sure that is the only way. I guess I
could somehow write a class MyFoo that uses method_missing and then
figures
out the correct active record instance, but not sure if there was an
easier
way ?

my test program:

=====================

require “rubygems”
require “active_record”
require ‘sqljdbc4.jar’

ActiveRecord::Base.configurations[“mtmdb”] = {:adapter =>
“jdbc”,
:url=> ‘jdbc:sqlserver://10.93.31.331;databaseName=mt’,
:username => “”,
:password => “”,
:driver => “com.microsoft.sqlserver.jdbc.SQLServerDriver”,
:autocommit => true}

ActiveRecord::Base.configurations[“test”] = {
:adapter => “jdbc”,
:url=> ‘jdbc:sqlserver://10.94.11.11;databaseName=LJ’,
:username => “”,
:password => “”,
:driver => “com.microsoft.sqlserver.jdbc.SQLServerDriver”,
:autocommit => true
}

class TestdbBase1 < ActiveRecord::Base
self.abstract_class = true
def self.connect2db
establish_connection ‘test’
end
end

class TestdbBase2 < ActiveRecord::Base
self.abstract_class = true
def self.connect2db
establish_connection ‘mtmdb’
end
end

class MyTestTable1 < TestdbBase1
self.table_name = “my_test_table”
end

class MyTestTable2 < TestdbBase2
self.table_name = “my_test_table”
end

TestdbBase1.connect2db
MyTestTable = MyTestTable1

rec = MyTestTable.first
p rec

Object.send(:remove_const, :MyTestTable)

TestdbBase2.connect2db
MyTestTable = MyTestTable2

rec = MyTestTable.first
p rec