New() function

This function allows you to create a new Validation session without a Validator. This is useful for conditional validation or reusing validation logic.

The function accepts an optional parameter of type [Options] struct, which allows you to specify options such as the specific locale code and locale to use, and a custom JSON marshaler for errors.

The following example conditionally adds a Validator rule for the month_day value.

month := 5
monthDay := 11

val := v.New()

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

if val.Valid() {
  fmt.Println("The validation passes")
}

output:

The validation passes

As we mentioned above, you can pass the Options type to the New() function, in order to specify additional options when creating a new Validation session, such as the specific locale code and locale to use, and a custom JSON marshaler for errors. More information about the Options parameter in the following sections.