💯Go Struct and Field validation, including Cross Field, Cross Struct, Map, Slice and Array diving
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validator/non-standard/validators/notblank.go

26 lines
676 B

package validators
import (
"reflect"
"strings"
"gopkg.in/go-playground/validator.v9"
)
// NotBlank is the validation function for validating if the current field
// has a value or length greater than zero, or is not a space only string.
func NotBlank(fl validator.FieldLevel) bool {
field := fl.Field()
switch field.Kind() {
case reflect.String:
return len(strings.TrimSpace(field.String())) > 0
case reflect.Chan, reflect.Map, reflect.Slice, reflect.Array:
return field.Len() > 0
case reflect.Ptr, reflect.Interface, reflect.Func:
return !field.IsNil()
default:
return field.IsValid() && field.Interface() != reflect.Zero(field.Type()).Interface()
}
}