蒙古语查询问题

Question

I'm using mongoid 3.0 with rails 3.2.3.

mongoid.yml looks like:

development:
  sessions:
    default:
      database: dana-x
      hosts: localhost

Server running with no problem. But when i've trying to execute following code:

User.where(:login => user_name).first

Server returns NoMethod error:

undefined method `map' for "localhost":String

.bundle/ruby/1.9.1/gems/moped-1.0.0.beta/lib/moped/cluster.rb:20:in `initialize'
.bundle/ruby/1.9.1/gems/moped-1.0.0.beta/lib/moped/session.rb:52:in `new'
.bundle/ruby/1.9.1/gems/moped-1.0.0.beta/lib/moped/session.rb:52:in `initialize'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/sessions/factory.rb:60:in `new'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/sessions/factory.rb:60:in `create_session'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/sessions/factory.rb:41:in `default'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/sessions.rb:109:in `default'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/sessions.rb:354:in `__session__'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/sessions.rb:199:in `mongo_session'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/sessions.rb:157:in `collection'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/contextual/mongo.rb:208:in `initialize'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/contextual.rb:47:in `new'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/contextual.rb:47:in `create_context'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/contextual.rb:30:in `context'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/contextual.rb:20:in `rescue in first'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/contextual.rb:18:in `first'
app/controllers/feed_controller.rb:5:in `index'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_controller/metal/implicit_render.rb:4:in `send_action'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/abstract_controller/base.rb:167:in `process_action'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_controller/metal/rendering.rb:10:in `process_action'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/abstract_controller/callbacks.rb:18:in `block in process_action'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:414:in `_run__980518159__process_action__502500855__callbacks'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:405:in `__run_callback'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:385:in `_run_process_action_callbacks'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:81:in `run_callbacks'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/abstract_controller/callbacks.rb:17:in `process_action'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_controller/metal/rescue.rb:29:in `process_action'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_controller/metal/instrumentation.rb:30:in `block in process_action'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/notifications.rb:123:in `block in instrument'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/notifications/instrumenter.rb:20:in `instrument'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/notifications.rb:123:in `instrument'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_controller/metal/instrumentation.rb:29:in `process_action'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_controller/metal/params_wrapper.rb:205:in `process_action'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/abstract_controller/base.rb:121:in `process'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/abstract_controller/rendering.rb:45:in `process'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_controller/metal.rb:203:in `dispatch'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_controller/metal/rack_delegation.rb:14:in `dispatch'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_controller/metal.rb:246:in `block in action'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/routing/route_set.rb:73:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/routing/route_set.rb:73:in `dispatch'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/routing/route_set.rb:36:in `call'
.bundle/ruby/1.9.1/gems/journey-1.0.3/lib/journey/router.rb:68:in `block in call'
.bundle/ruby/1.9.1/gems/journey-1.0.3/lib/journey/router.rb:56:in `each'
.bundle/ruby/1.9.1/gems/journey-1.0.3/lib/journey/router.rb:56:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/routing/route_set.rb:600:in `call'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/rack/mongoid/middleware/identity_map.rb:33:in `block in call'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/mongoid/unit_of_work.rb:39:in `unit_of_work'
.bundle/ruby/1.9.1/bundler/gems/mongoid-cb1312e5385c/lib/rack/mongoid/middleware/identity_map.rb:33:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
.bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/etag.rb:23:in `call'
.bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/conditionalget.rb:25:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/head.rb:14:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/params_parser.rb:21:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/flash.rb:242:in `call'
.bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/session/abstract/id.rb:205:in `context'
.bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/session/abstract/id.rb:200:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/cookies.rb:338:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/callbacks.rb:28:in `block in call'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:405:in `_run__647823261__call__262699075__callbacks'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:405:in `__run_callback'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:385:in `_run_call_callbacks'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/callbacks.rb:81:in `run_callbacks'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/callbacks.rb:27:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/reloader.rb:65:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/remote_ip.rb:31:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/debug_exceptions.rb:16:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/show_exceptions.rb:56:in `call'
.bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/rack/logger.rb:26:in `call_app'
.bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/rack/logger.rb:16:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/request_id.rb:22:in `call'
.bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/methodoverride.rb:21:in `call'
.bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/runtime.rb:17:in `call'
.bundle/ruby/1.9.1/gems/activesupport-3.2.3/lib/active_support/cache/strategy/local_cache.rb:72:in `call'
.bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/lock.rb:15:in `call'
.bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/middleware/static.rb:62:in `call'
.bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/engine.rb:479:in `call'
.bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/application.rb:220:in `call'
.bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/content_length.rb:14:in `call'
.bundle/ruby/1.9.1/gems/railties-3.2.3/lib/rails/rack/log_tailer.rb:14:in `call'
.bundle/ruby/1.9.1/gems/rack-1.4.1/lib/rack/handler/webrick.rb:59:in `service'
/home/scepion1d/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:138:in `service'
/home/scepion1d/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/httpserver.rb:94:in `run'
/home/scepion1d/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/webrick/server.rb:191:in `block in start_thread'

I think that problem in connection to db. Does anybody know how to solve this problem?

Answer 1

For mongoid 3.0 mongoid.yml should looks like:

development:
  sessions:
    default:
      database: dana-x
      hosts:
        - localhost:27017

Answer 2

My default mongoid.yml contains:

  development:                                                                                                                                                                                                                                                                                                                
    host: localhost                                                                                                                                                                                                                                                                                                            
    database: mydatabse

Test your config without sessions in your mongoid.yml

Answer 3

host expects a single host definition, hosts for an array (ie with replication)

development:
  sessions:
    default:
      database: dana-x
      host: localhost

or if you really do have replica sets, you can define like this (covered in the docs here ):

development:
  sessions:
    default:
      database: dana-x
      hosts:
        - - 10.10.10.1
          - 27017
        - - 10.10.10.2
          - 27017
        - - 10.10.10.3
          - 27017