Validation Sessions

The Validation session

A Validation session holds one or more validators. You typically build one with:

• Is(...)
• Check(...)
• New()

New()

New() creates an empty session you can populate conditionally.

val := v.New()

if month == 6 {
  val.Is(v.Number(day, "month_day").LessOrEqualTo(10))
}

if err := val.ToError(); err != nil {
  return err
}

Valid()

Valid() reports if any errors were recorded.

val := v.Is(v.String("", "name").Not().Blank())
_ = val.Valid() // false

Is() chaining

Validation.Is(...) appends validators to an existing session:

val := v.Is(v.String("john", "username").Not().Blank())
val.Is(v.String("single", "status").InSlice([]string{"single", "married"}))