DRY Rails Ruby

Dry Schema: Decouple Validations from Rails Models


Standard Ruby on Rails best practices suggest that we should define our validations on the model object. RoR gives you the tool, aka DSL (domain specific language), to implement these validations. For simple situations, say a sign up form, this works really well, but what about more complicated scenarios? What if your model serves several different controllers? Or what if, for example, different types of users could submit different values to the same model? Do we want to use messy if blocks to check the user type and apply the correct set of validations? Probably not. So whats the solution? Enter Dry-schema.