What is a ForeignKey in Django?
An example of an AI chatbot conversation about Django ForeignKey relationships.
What is a ForeignKey in Django?
A ForeignKey in Django is a field that creates a many-to-one relationship between two models.
Can you give me an example of how to use ForeignKey?
Sure! If you have a Book model and an Author model, you can define a ForeignKey in the Book model to link it to the Author.
How do I set up the ForeignKey in my models?
You would define it like this: author = models.ForeignKey(Author, on_delete=models.CASCADE) in your Book model.
What does the on_delete parameter do?
The on_delete parameter specifies what should happen to the related records when the referenced record is deleted. For example, models.CASCADE will delete all related books if an author is deleted.
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