My Notes

Custom Validation Method

rails validation

Important: when using a custom validation method, use the method validate and not validates

validate :check_location_coordinates

def check_location_coordinates
  unless location_lat.present? && location_lng.present?
    errors.add(:location, "must have a location coordinates.")
  end
end

Found the solution in the rails guides: https://guides.rubyonrails.org/active_record_validations.html#custom-validators