What are Rails nested attributes?

Can you explain what Rails nested attributes are?

Sure! Rails nested attributes allow you to save attributes of associated records through the parent model. This is useful for forms that deal with multiple models.

How do I implement nested attributes in my Rails application?

To implement nested attributes, you need to use the accepts_nested_attributes_for method in your parent model and permit the nested attributes in your controller.

Can you give me an example of how to set this up?

Absolutely! For example, if you have a Post model that has many Comments, you would add accepts_nested_attributes_for :comments in the Post model.

What are some common pitfalls when using nested attributes?

Common pitfalls include not permitting nested attributes in the controller, which can lead to errors, and forgetting to handle the associated records properly.