When I execute update Attributes in my model update_attributes prod_id: 34978273492, it returns Unknown modifier: $pushAll (9).
What is the root cause. TIA
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In MongoDB 3.6 the deprecated $pushAll operator was removed, see for more details here. If updating mongoid to the latest version doesn't solve the problem, the only solution is to downgrade your Mongo version to 3.4.X
Alex
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How can I downgrade mongo to 3.4 – Amar A Feb 09 '18 at 12:23
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You can download previous versions from here: https://www.mongodb.com/download-center?jmp=nav#previous – Alex Feb 09 '18 at 14:48