Source file src/github.com/go-playground/validator/v10/non-standard/validators/notblank.go

Documentation: github.com/go-playground/validator/v10/non-standard/validators

     1  package validators
     2  
     3  import (
     4  	"reflect"
     5  	"strings"
     6  
     7  	"github.com/go-playground/validator/v10"
     8  )
     9  
    10  // NotBlank is the validation function for validating if the current field
    11  // has a value or length greater than zero, or is not a space only string.
    12  func NotBlank(fl validator.FieldLevel) bool {
    13  	field := fl.Field()
    14  
    15  	switch field.Kind() {
    16  	case reflect.String:
    17  		return len(strings.Trim(strings.TrimSpace(field.String()), "\x1c\x1d\x1e\x1f")) > 0
    18  	case reflect.Chan, reflect.Map, reflect.Slice, reflect.Array:
    19  		return field.Len() > 0
    20  	case reflect.Ptr, reflect.Interface, reflect.Func:
    21  		return !field.IsNil()
    22  	default:
    23  		return field.IsValid() && field.Interface() != reflect.Zero(field.Type()).Interface()
    24  	}
    25  }
    26  

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