Mongoid - Array management? insert unique value, remove value if exists?

As per Chris Hawk from Mongoid googlegroup.

As per Chris Hawk from Mongoid googlegroup: Arrays in Mongoid documents are simple Ruby arrays. See the docs for the Array class: ruby-doc.org/core/classes/Array.html So, for insertion you can simply do: array Delete(object).

Worth mentioning, in mongoid, as of 2.0.0pre4 I do not see any addToSet support. Mongo_mapper (while imo less maintained :( ) supports this via push_uniq method. Short of that, in mongoid, if you are working with the relationship method directly, you don't need to do the include?.

If you are working with the array directly, you do. Example: class Person include Mongoid::Document has_and_belongs_to_many :pets ## or has_many :pets, :stored_as => :array if your not using the latest mongoid end #when using . Pets no need to check, mongoid checks for you to ensure you can only add the same pet once.

Pet = Pet. Find("294x29s9a9292") p = Person. Find("42192189a92191a") p.

Pets Pet_ids Include? Pet.id.

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