What are validations in Ruby on Rails?
Validations in Ruby on Rails are used to ensure that only valid data is saved to the database. They help maintain data integrity.
Can you give me an example of a validation?
Sure! A common validation is validates :name, presence: true
, which ensures that the name field cannot be empty.
What happens if a validation fails?
If a validation fails, the record will not be saved to the database, and the errors will be added to the object's errors collection.
How can I display validation errors in a form?
You can display validation errors in a form by iterating over the errors and showing them next to the relevant fields.
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