Exception: ActiveRecord::AssociationTypeMismatch

Inherits:
ActiveRecordError show all
Defined in:
lib/rubypitaya/app-template/vendor/bundle/ruby/3.1.0/gems/activerecord-7.0.4/lib/active_record/errors.rb

Overview

Raised when an object assigned to an association has an incorrect type.

class Ticket < ActiveRecord::Base
  has_many :patches
end

class Patch < ActiveRecord::Base
  belongs_to :ticket
end

# Comments are not patches, this assignment raises AssociationTypeMismatch.
@ticket.patches << Comment.new(content: "Please attach tests to your patch.")