Instruction: Discuss the use of Django signals to log changes made to models.
Context: This question evaluates the candidate's ability to implement logging of model changes using Django's signals framework.
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Django signals allow us to hook into various stages of a model's lifecycle and execute code in response to certain actions. Specifically, when it comes to logging changes made to models, I leverage signals to capture and log every update, creation, or deletion that occurs. This not only aids in debugging but also provides a transparent history of data modifications which is invaluable for audit trails and compliance.
For instance, to log changes made to a model, I typically use the post_save and post_delete signals. Here's a brief overview of how I implement this:...