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Delayed::DeserializationError: Job failed to load: undefined method `engine' for nil:NilClass. about delayed_job_active_record HOT 2 CLOSED

collectiveidea avatar collectiveidea commented on July 22, 2024
Delayed::DeserializationError: Job failed to load: undefined method `engine' for nil:NilClass.

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Comments (2)

betamatt avatar betamatt commented on July 22, 2024 3

Yeah, don't do that :) There's all kinds of objects that DJ can't reliably serialize and blindly using delay on arbitrary object types is dangerous.

Best practice is to call delay with the ids of the objects and refetch them in the job. This way you're not serializing some huge object graph and always get the freshest version of the data. Ex: UserMailer.delay.send_products_update_update_notification(user.id, my_products.pluck(:id))

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snmmaurya avatar snmmaurya commented on July 22, 2024

betamatt is right, do not pass the my_products, pass its reference in the form of singular object as (variable or array) by which you could retrieve appropriate products.

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