How can I use validates methods in my application?

How can I use validates methods in my application?

You can use validates methods to ensure data integrity by checking conditions before saving data to the database.

Can you give me an example of how to implement it?

Sure! In Ruby on Rails, you can use validates :attribute, presence: true to ensure an attribute is not empty.

What other validations can I use?

You can use validations like uniqueness, length, and format to enforce different rules on your data.

Are there any performance considerations I should be aware of?

Yes, excessive validations can slow down your application, so it's important to balance validation needs with performance.