Fix the authentication mechanism

Fix filter search

models/user.go

@@ -1,12 +1,18 @@
 package models
 
-import "time"
+import (
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+	"gorm.io/gorm"
+)
 
 // User 用户表模型
 // 说明：PasswordSalt 使用 32 字节随机盐（以 16 进制存储为 64 个字符），因此列长度设置为 64
-
 type User struct {
 	ID           uint      `gorm:"primaryKey;comment:用户ID，自增主键"`
+	UUID         string    `gorm:"uniqueIndex;size:36;not null;comment:用户的唯一标识符" json:"uuid"`
 	Username     string    `gorm:"uniqueIndex;size:64;not null;comment:用户名，唯一索引"`
 	Password     string    `gorm:"size:255;not null;comment:密码哈希值"`
 	PasswordSalt string    `gorm:"size:64;not null;comment:密码加密盐值"`
@@ -14,3 +20,12 @@ type User struct {
 	CreatedAt    time.Time `gorm:"comment:创建时间"`
 	UpdatedAt    time.Time `gorm:"comment:更新时间"`
 }
+
+// BeforeCreate 在创建记录前自动生成UUID
+func (user *User) BeforeCreate(tx *gorm.DB) error {
+	// 生成UUID
+	if user.UUID == "" {
+		user.UUID = strings.ToUpper(uuid.New().String())
+	}
+	return nil
+}