Are you absolutely sure your `has_one` association really has one association?

08-Jun-2023 523
Learn about an unexpected limitation with this API and how to combat it universally.The Rails has_one API has an unexpected limitation: It does not prevent multiple records from being associated to the parent record.Take this simple example straight from the Rails Guides. We have a supplier that has_one account. Seems simple enough, but let’s take a closer look.
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