How to make time maximum validation with ozzo validation in golang

Question

I want to make a maximum input for time with format time like (23:30:00) and the maximum time is (09:30:00), i tried the validation using ozzo validation and i find the function and its call "Date(layout string)"

It is the documentation https://github.com/go-ozzo/ozzo-validation

From the documentation i see that the function Date has Min and Max to check specified range but the problem is i don't know how to fill the arguments. The data type is time.Time.

Here is my code

if err := validation.Validate(c.ReleasedTime, validation.Date("15:04:05").Max(????)); err != nil {
    logger.E(err)
    return shared.NewMultiStringValidationError(shared.HTTPErrorBadRequest, map[string]string{
        "en": "Format date",
        "id": "format tanggal",
    })
}

From there i fill the Max arguments "???" because i still confuse how to fill it. Maybe you all can help me to find the this solution or make this validation using another package, i'll be appreciated. Thank you

Answer 1

There's an example in the testing code.

You could see it here: https://github.com/go-ozzo/ozzo-validation/blob/master/date_test.go#L71

But when we only need compare hour, so it will be a little hack here.

import (
    "fmt"
    "time"

    validation "github.com/go-ozzo/ozzo-validation/v4"
)

func main() {
    layout := "2006-01-02T15:04:05"
    // this add a base date to hour, so we have a valid time.Time object.
    base := "2020-01-01"
    max, _ := time.Parse(layout, base+"T"+"23:30:00")
    fmt.Println(max)
    r := validation.Date(layout).Max(max)
    fmt.Println(r.Validate(base + "T" + "09:00:00")) // ok
    fmt.Println(r.Validate(base + "T" + "23:40:00")) // this should raise error
}