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code/base-project/base-go-v2/internal/errs/validation.go

@@ -1,19 +1,34 @@
 package errs
 
-import "fmt"
+import (
+	"fmt"
+	"strings"
+)
 
+// ValidationError 用于收集多个字段错误，同时实现 error 接口
 type ValidationError struct {
-	field   string
-	message string
+	Errors map[string]string // key: 字段名, value: 错误信息
 }
 
-func (e *ValidationError) Error() string {
-	return fmt.Sprintf("字段 %s: %s", e.field, e.message)
+// Error 实现 error 接口
+func (v *ValidationError) Error() string {
+	if len(v.Errors) == 0 {
+		return ""
+	}
+
+	msgs := make([]string, 0, len(v.Errors))
+	for field, msg := range v.Errors {
+		msgs = append(msgs, fmt.Sprintf("%s: %s", field, msg))
+	}
+	return strings.Join(msgs, "; ")
 }
 
-func NewValidationError(field, message string) error {
+// NewValidationError 创建多字段的 ValidationError
+func NewValidationError(errors map[string]string) error {
+	if len(errors) == 0 {
+		return nil
+	}
 	return &ValidationError{
-		field:   field,
-		message: message,
+		Errors: errors,
 	}
 }