This class provides the ability to perform an explicit $addToSet modification on a specific field.
Sends the atomic $addToSet operation to the database.
@example Persist the new values.
addToSet.persist
@return [ Object ] The new array value.
@since 2.0.0
# File lib/mongoid/persistence/atomic/add_to_set.rb, line 18 def persist prepare do document[field] = [] unless document[field] values = document.send(field) values.push(value) unless values.include?(value) values.tap do if document.persisted? collection.update(document.atomic_selector, operation("$addToSet"), options) document.remove_change(field) end end end end
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