dynamic_conditional_validations

🔄 Dynamic Conditional Validations

Leverage validate with lambdas or methods to define validations that change at runtime, based on external services or user roles. This grants maximum flexibility without polluting your model with booleans.

# app/models/subscription.rb
class Subscription < ApplicationRecord
  validate :quota_within_limits, if: -> { plan.requires_quota_check? }

  def quota_within_limits
    unless QuotaService.new(self).within_limit?
      errors.add(:base, 'Subscription quota exceeded')
    end
  end
end