Exception: ActiveRecord::ImmutableRelation
| Relationships & Source Files | |
| Super Chains via Extension / Inclusion / Inheritance | |
|
Class Chain:
self,
ActiveRecordError,
StandardError
|
|
|
Instance Chain:
self,
ActiveRecordError,
StandardError
|
|
| Inherits: |
ActiveRecord::ActiveRecordError
|
| Defined in: | activerecord/lib/active_record/errors.rb |
Overview
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