Connecting to two databases Mongoid - ruby-on-rails-3

Question

I have two databases that I have to use in my application. I have the following in my mongoid.yml:
development:
# Configure available database sessions. (required)
sessions:
# Defines the default session. (required)
default:
# Defines the name of the default database that Mongoid can connect to.
# (required).
database: db_development
username: myusername
password: mypassword
# Provides the hosts the default session can connect to. Must be an array
# of host:port pairs. (required)
hosts:
- myserverip:27017
databases:
secondary:
database: db2_development
username: myusername
password: mypassword
# Provides the hosts the default session can connect to. Must be an array
# of host:port pairs. (required)
hosts:
- myserverip:27018
In my model file:
class MyModel
include Mongoid::Document
store_in database: "secondary"
field :name, type: String
field :age, type: Integer
end
I have data in MyModel. When I tried to query, I'm go the following error:
Moped::Errors::QueryFailure (The operation: #<Moped::Protocol::Query
#length=96
#request_id=5
#response_to=0
#op_code=2004
#flags=[:slave_ok]
#full_collection_name="secondary.mymodel"
#skip=0
#limit=0
#selector={"name"=>"Tom"}
#fields=nil>
failed with error 10057: "unauthorized db:secondary ns:secondary.mymodel lock type:0 client:10.100.55.40"
I tried searching online but could not get any solution. Any help would be appreciated. Thanks in advance.

Answer 1

hmm well can you do this seem like you messed your yaml file
development:
sessions:
default:
database: db_development
username: my_username
password: my_password
hosts:
- myserverip:27017
options:
consistency: :eventual
writeable:
database: db2_development
username: myusername2
password mypassword2
hosts:
- myserverip2:27018
options:
consistency: strong
In your model just write this
store_in session: "writeable"
class MyModel
include Mongoid::Document
store_in session: "writeable"
field :name, type: String
field :age, type: Integer
end
FYI Never tested with password options but i guess it would work
Hope this help

Answer 2

In order to access a database temporarily (e.g. in a script) you can use the MongoDB Ruby drivers: Tutorials - Documentation - Low Level Documentation
For a quick overview:
Connect to the database:
client = Mongo::Client.new([ '127.0.0.1:27017' ], :database => 'my_db')
db = client.database
Query for entries via mongoDB query syntax:
db['collection_name'].find('field_name' => 'field_value')