Ruby. Mongoid. Relations
- by Scepion1d
I've encountered some problems with MongoID. I have three models:
require 'mongoid'
class Configuration
include Mongoid::Document
belongs_to :user
field :links, :type => Array
field :root, :type => String
field :objects, :type => Array
field :categories, :type => Array
has_many :entries
end
class TimeDim
include Mongoid::Document
field :day, :type => Integer
field :month, :type => Integer
field :year, :type => Integer
field :day_of_week, :type => Integer
field :minute, :type => Integer
field :hour, :type => Integer
has_many :entries
end
class Entry
include Mongoid::Document
belongs_to :configuration
belongs_to :time_dim
field :category, :type => String
# any other dynamic fields
end
Creating documents for Configurations and TimeDims is successful. But when i've trying to execute following code:
params = Hash.new
params[:configuration] = config # an instance of Configuration from DB
entry.each do |key, value|
params[key.to_sym] = value # String
end
unless Entry.exists?(conditions: params)
params[:time_dim] = self.generate_time_dim # an instance of TimeDim from DB
params[:category] = self.detect_category(descr) # String
Entry.new(params).save
end
... i saw following output:
/home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/bson-1.6.1/lib/bson/bson_c.rb:24:in `serialize': Cannot serialize an object of class Configuration into BSON. (BSON::InvalidDocument)
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/bson-1.6.1/lib/bson/bson_c.rb:24:in `serialize'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/cursor.rb:604:in `construct_query_message'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/cursor.rb:465:in `send_initial_query'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/cursor.rb:458:in `refresh'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/cursor.rb:128:in `next'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/db.rb:509:in `command'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongo-1.6.1/lib/mongo/cursor.rb:191:in `count'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/cursor.rb:42:in `block in count'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/collections/retry.rb:29:in `retry_on_connection_failure'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/cursor.rb:41:in `count'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/contexts/mongo.rb:93:in `count'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/criteria.rb:45:in `count'
from /home/scepion1d/Workspace/RubyMine/dana-x/.bundle/ruby/1.9.1/gems/mongoid-2.4.6/lib/mongoid/finders.rb:60:in `exists?'
from /home/scepion1d/Workspace/RubyMine/dana-x/crawler/crawler.rb:110:in `block (2 levels) in push_entries_to_db'
from /home/scepion1d/Workspace/RubyMine/dana-x/crawler/crawler.rb:103:in `each'
from /home/scepion1d/Workspace/RubyMine/dana-x/crawler/crawler.rb:103:in `block in push_entries_to_db'
from /home/scepion1d/Workspace/RubyMine/dana-x/crawler/crawler.rb:102:in `each'
from /home/scepion1d/Workspace/RubyMine/dana-x/crawler/crawler.rb:102:in `push_entries_to_db'
from main_starter.rb:15:in `<main>'
Can anyone tell what am I doing wrong?
