inclusion – Tarik Billa

rails validation: :allow_nil and :inclusion both needed at the same time

April 11, 2023 by Tarik

In Rails 5 you can use allow_blank: true outside or inside inclusion block: validates :kind, inclusion: { in: [‘a’, ‘b’], allow_blank: true } or validates :kind, inclusion: { in: [‘a’, ‘b’] }, allow_blank: true tip: you can use in: %w(a b) for text values

How to check if all of the following items are in a list?

November 11, 2022 by Tarik

Operators like <= in Python are generally not overriden to mean something significantly different than “less than or equal to”. It’s unusual for the standard library does this–it smells like legacy API to me. Use the equivalent and more clearly-named method, set.issubset. Note that you don’t need to convert the argument to a set; it’ll … Read more