New on the blog: Validations Beyond Presence — conditional rules, custom validators, and enum integration in Wheels 4.0. <https://blog.wheels.dev/posts/validations-conditional-enum/ > What it covers: • The full validator surface in one worked model — presence, scoped uniqueness, format, length, numericality, inclusion/exclusion, confirmation • Conditional validation with

condition

/

unless

/

when

— and why those are a fixed-grammar string parser, NOT

Evaluate()

(bad expressions silently skip in production) • Custom

validate()

/

validateOnCreate()

/

validateOnUpdate()

— register a method name, fail by calling

addError()

(the return value is ignored — the #1 gotcha) •

enum()

— one call that auto-registers

validatesInclusionOf

, generates

isDraft()

-style checkers, and creates per-value scopes • Reading errors right:

errorsOn()

returns an array of

{property, message, name}

STRUCTS — loop and read

.message

, don’t print the struct Plus a “sharp edges” section: scoped uniqueness isn’t a DB constraint, presence is skipped on columns with a DB default, confirmation errors land on the virtual

passwordConfirmation

property, and

allowBlank

defaults to false everywhere.