Version:

class UnknownPrimaryKey

Ruby on Rails 3.1.12

Since v3.1.12

Available in: v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

Raised when a primary key is needed, but there is not one specified in the schema or model.

Inherits from

ActiveRecord::ActiveRecordError

Attributes

ActiveRecord::UnknownPrimaryKey#model

Methods (defined here)

# message
self. new