learn-go/snippetbox/internal/validator/validator.go
2024-02-02 21:24:04 -08:00

48 lines
899 B
Go

package validator
import (
"slices"
"strings"
"unicode/utf8"
)
type Validator struct {
FieldErrors map[string]string
}
// Valid() ...
func (v *Validator) Valid() bool {
return len(v.FieldErrors) == 0
}
// AddFieldError ...
func (v *Validator) AddFieldError(key, message string) {
if v.FieldErrors == nil {
v.FieldErrors = make(map[string]string)
}
if _, exists := v.FieldErrors[key]; !exists {
v.FieldErrors[key] = message
}
}
// CheckField ...
func (v *Validator) CheckField(ok bool, key, message string) {
if !ok {
v.AddFieldError(key, message)
}
}
func NotBlank(value string) bool {
return strings.TrimSpace(value) != ""
}
func MaxChars(value string, n int) bool {
return utf8.RuneCountInString(value) <= n
}
// PermittedValue[T comparable] ...
func PermittedValue[T comparable](value T, permittedValues ...T) bool {
return slices.Contains(permittedValues, value)
}