Raised when a relation cannot be mutated because it's already loaded.
class Task < ActiveRecord::Base end relation = Task.all relation.loaded? # => true # Methods which try to mutate a loaded relation fail. relation.where!(title: 'TODO') # => ActiveRecord::ImmutableRelation relation.limit!(5) # => ActiveRecord::ImmutableRelation
© 2004–2018 David Heinemeier Hansson
Licensed under the MIT License.