module Mongoid::Persistable::Incrementable
Defines behavior for $inc operations.
@since 4.0.0
Public Instance Methods
inc(increments)
click to toggle source
Increment the provided fields by the corresponding values. Values can be positive or negative, and if no value exists for the field it will be set with the provided value.
@example Increment the fields.
document.inc(score: 10, place: 1, lives: -10)
@param [ Hash ] increments The field/inc increment pairs.
@return [ Document
] The document.
@since 4.0.0
# File lib/mongoid/persistable/incrementable.rb, line 25 def inc(increments) prepare_atomic_operation do |ops| process_atomic_operations(increments) do |field, value| increment = value.__to_inc__ current = attributes[field] new_value = (current || 0) + increment process_attribute field, new_value if executing_atomically? attributes[field] = new_value ops[atomic_attribute_name(field)] = increment end { "$inc" => ops } unless ops.empty? end end