How do I validate nested models in Rails?

How do I validate nested models in Rails?

In Rails, you can validate nested models by using the accepts_nested_attributes_for method along with validations in the nested model.

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

Sure! In your parent model, use accepts_nested_attributes_for :children and in the child model, add validations like validates :name, presence: true.

What if I want to validate the nested model conditionally?

You can use the :if or :unless options in your validations to apply them conditionally based on certain attributes.

Thanks! Is there a way to handle errors for nested models?

Yes, you can access the errors of nested models through the parent model's errors collection, allowing you to display them in your forms.