Nimir questions

Nimir answers

• Set non-database attribute for rails model without `attr_accessor`
• Finding "all" domains of a country
• Background images using prawn on all pages
• What happens to Rails session after :expire_after time is up?
• RSpec Application Helper Test: Undefined local variable or method `helper`
• How to destroy Rails model without calling dependent: :destroy on associations
• Rails what's difference in unique index and validates_uniqueness_of
• Why does Rails ignore a Rollback in a (pseudo)nested transaction?
• What is the difference between homeUrl and baseUrl in Yii framework?
• Why are pin operators necessary in Ecto queries?