diff --git a/backend/app/http/admin/medias.go b/backend/app/http/admin/medias.go
index b9087de..e072b4f 100644
--- a/backend/app/http/admin/medias.go
+++ b/backend/app/http/admin/medias.go
@@ -19,8 +19,8 @@ type medias struct {
 //	@Bind	pagination query
 //	@Bind	query query
 func (ctl *medias) List(ctx fiber.Ctx, pagination *requests.Pagination, query *ListQuery) (*requests.Pager, error) {
-	cond := model.MediasModel.BuildConditionWithKey(query.Keyword)
-	return model.MediasModel.List(ctx.Context(), pagination, cond)
+	cond := model.MediasModel().BuildConditionWithKey(query.Keyword)
+	return model.MediasModel().List(ctx.Context(), pagination, cond)
 }
 
 // Show media
@@ -28,7 +28,7 @@ func (ctl *medias) List(ctx fiber.Ctx, pagination *requests.Pagination, query *L
 //	@Router	/admin/medias/:id [get]
 //	@Bind	id path
 func (ctl *medias) Show(ctx fiber.Ctx, id int64) error {
-	media, err := model.MediasModel.GetByID(ctx.Context(), id)
+	media, err := model.MediasModel().GetByID(ctx.Context(), id)
 	if err != nil {
 		return ctx.SendString("Media not found")
 	}
@@ -46,7 +46,7 @@ func (ctl *medias) Show(ctx fiber.Ctx, id int64) error {
 //	@Router	/admin/medias/:id [delete]
 //	@Bind	id path
 func (ctl *medias) Delete(ctx fiber.Ctx, id int64) error {
-	media, err := model.MediasModel.GetByID(ctx.Context(), id)
+	media, err := model.MediasModel().GetByID(ctx.Context(), id)
 	if err != nil {
 		return ctx.SendString("Media not found")
 	}
@@ -55,7 +55,7 @@ func (ctl *medias) Delete(ctx fiber.Ctx, id int64) error {
 		return err
 	}
 
-	if err := model.MediasModel.Delete(ctx.Context(), id); err != nil {
+	if err := model.MediasModel().Delete(ctx.Context(), id); err != nil {
 		return err
 	}
 	return ctx.SendStatus(fiber.StatusNoContent)
diff --git a/backend/app/http/admin/orders.go b/backend/app/http/admin/orders.go
index e464141..0006109 100644
--- a/backend/app/http/admin/orders.go
+++ b/backend/app/http/admin/orders.go
@@ -28,25 +28,25 @@ type orders struct {
 //	@Bind	pagination query
 //	@Bind	query query
 func (ctl *orders) List(ctx fiber.Ctx, pagination *requests.Pagination, query *OrderListQuery) (*requests.Pager, error) {
-	cond := model.OrdersModel.BuildConditionWithKey(query.OrderNumber, query.UserID)
-	return model.OrdersModel.List(ctx.Context(), pagination, cond)
+	cond := model.OrdersModel().BuildConditionWithKey(query.OrderNumber, query.UserID)
+	return model.OrdersModel().List(ctx.Context(), pagination, cond)
 }
 
 // Refund
 // @Router	/admin/orders/:id/refund [post]
 // @Bind	id path
 func (ctl *orders) Refund(ctx fiber.Ctx, id int64) error {
-	order, err := model.OrdersModel.GetByID(ctx.Context(), id)
+	order, err := model.OrdersModel().GetByID(ctx.Context(), id)
 	if err != nil {
 		return err
 	}
 
-	user, err := model.UsersModel.GetByID(ctx.Context(), order.UserID)
+	user, err := model.UsersModel().GetByID(ctx.Context(), order.UserID)
 	if err != nil {
 		return err
 	}
 
-	post, err := model.PostsModel.GetByID(ctx.Context(), order.PostID)
+	post, err := model.PostsModel().GetByID(ctx.Context(), order.PostID)
 	if err != nil {
 		return err
 	}
@@ -61,7 +61,7 @@ func (ctl *orders) Refund(ctx fiber.Ctx, id int64) error {
 		}
 
 		order.Status = fields.OrderStatusRefundSuccess
-		if err := model.OrdersModel.Update(ctx.Context(), order); err != nil {
+		if err := order.Update(ctx.Context()); err != nil {
 			return errors.Wrap(err, "update order failed")
 		}
 
@@ -87,7 +87,7 @@ func (ctl *orders) Refund(ctx fiber.Ctx, id int64) error {
 	order.RefundTransactionID = resp.RefundId
 	order.Status = fields.OrderStatusRefundProcessing
 
-	if err := model.OrdersModel.Update(ctx.Context(), order); err != nil {
+	if err := order.Update(ctx.Context()); err != nil {
 		return err
 	}
 
diff --git a/backend/app/http/admin/posts.go b/backend/app/http/admin/posts.go
index fcdaca8..780f106 100644
--- a/backend/app/http/admin/posts.go
+++ b/backend/app/http/admin/posts.go
@@ -28,7 +28,7 @@ func (ctl *posts) List(ctx fiber.Ctx, pagination *requests.Pagination, query *Li
 		// conds.Post_Status(fields.PostStatusPublished),
 		conds.Post_Like(query.Keyword),
 	}
-	pager, err := model.PostsModel.List(ctx.Context(), pagination, conds...)
+	pager, err := model.PostsModel().List(ctx.Context(), pagination, conds...)
 	if err != nil {
 		return nil, err
 	}
@@ -37,7 +37,7 @@ func (ctl *posts) List(ctx fiber.Ctx, pagination *requests.Pagination, query *Li
 		return item.ID
 	})
 	if len(postIds) > 0 {
-		postCntMap, err := model.PostsModel.BoughtStatistics(ctx.Context(), postIds)
+		postCntMap, err := model.PostsModel().BoughtStatistics(ctx.Context(), postIds)
 		if err != nil {
 			return pager, err
 		}
@@ -85,7 +85,7 @@ func (ctl *posts) Create(ctx fiber.Ctx, form *PostForm) error {
 	}
 
 	if form.Medias != nil {
-		medias, err := model.MediasModel.GetByIds(ctx.Context(), form.Medias)
+		medias, err := model.MediasModel().GetByIds(ctx.Context(), form.Medias)
 		if err != nil {
 			return err
 		}
@@ -111,7 +111,7 @@ func (ctl *posts) Create(ctx fiber.Ctx, form *PostForm) error {
 //	@Bind	id path
 //	@Bind	form body
 func (ctl *posts) Update(ctx fiber.Ctx, id int64, form *PostForm) error {
-	post, err := model.PostsModel.GetByID(ctx.Context(), id)
+	post, err := model.PostsModel().GetByID(ctx.Context(), id)
 	if err != nil {
 		return err
 	}
@@ -125,7 +125,7 @@ func (ctl *posts) Update(ctx fiber.Ctx, id int64, form *PostForm) error {
 	post.Tags = fields.Json[[]string]{}
 
 	if form.Medias != nil {
-		medias, err := model.MediasModel.GetByIds(ctx.Context(), form.Medias)
+		medias, err := model.MediasModel().GetByIds(ctx.Context(), form.Medias)
 		if err != nil {
 			return err
 		}
@@ -150,7 +150,7 @@ func (ctl *posts) Update(ctx fiber.Ctx, id int64, form *PostForm) error {
 //	@Router	/admin/posts/:id [delete]
 //	@Bind	id path
 func (ctl *posts) Delete(ctx fiber.Ctx, id int64) error {
-	post, err := model.PostsModel.GetByID(ctx.Context(), id)
+	post, err := model.PostsModel().GetByID(ctx.Context(), id)
 	if err != nil {
 		return err
 	}
@@ -175,12 +175,12 @@ type PostItem struct {
 //	@Router	/admin/posts/:id [get]
 //	@Bind	id path
 func (ctl *posts) Show(ctx fiber.Ctx, id int64) (*PostItem, error) {
-	post, err := model.PostsModel.GetByID(ctx.Context(), id)
+	post, err := model.PostsModel().GetByID(ctx.Context(), id)
 	if err != nil {
 		return nil, err
 	}
 
-	medias, err := model.MediasModel.GetByIds(ctx.Context(), lo.Map(post.Assets.Data, func(asset fields.MediaAsset, _ int) int64 {
+	medias, err := model.MediasModel().GetByIds(ctx.Context(), lo.Map(post.Assets.Data, func(asset fields.MediaAsset, _ int) int64 {
 		return asset.Media
 	}))
 	if err != nil {
@@ -198,12 +198,12 @@ func (ctl *posts) Show(ctx fiber.Ctx, id int64) (*PostItem, error) {
 //	@Bind	id path
 //	@Bind	userId path
 func (ctl *posts) SendTo(ctx fiber.Ctx, id, userId int64) error {
-	post, err := model.PostsModel.GetByID(ctx.Context(), id)
+	post, err := model.PostsModel().GetByID(ctx.Context(), id)
 	if err != nil {
 		return err
 	}
 
-	user, err := model.UsersModel.GetByID(ctx.Context(), userId)
+	user, err := model.UsersModel().GetByID(ctx.Context(), userId)
 	if err != nil {
 		return err
 	}
diff --git a/backend/app/http/admin/statistics.go b/backend/app/http/admin/statistics.go
index 2fd42a3..12a7be6 100644
--- a/backend/app/http/admin/statistics.go
+++ b/backend/app/http/admin/statistics.go
@@ -29,31 +29,31 @@ func (s *statistics) statistics(ctx fiber.Ctx) (*StatisticsResponse, error) {
 
 	var err error
 
-	statistics.PostDraft, err = model.PostsModel.Count(ctx.Context(), table.Posts.Status.EQ(Int(int64(fields.PostStatusDraft))))
+	statistics.PostDraft, err = model.PostsModel().Count(ctx.Context(), table.Posts.Status.EQ(Int(int64(fields.PostStatusDraft))))
 	if err != nil {
 		return nil, err
 	}
-	statistics.PostPublished, err = model.PostsModel.Count(ctx.Context(), table.Posts.Status.EQ(Int(int64(fields.PostStatusPublished))))
+	statistics.PostPublished, err = model.PostsModel().Count(ctx.Context(), table.Posts.Status.EQ(Int(int64(fields.PostStatusPublished))))
 	if err != nil {
 		return nil, err
 	}
 
-	statistics.Media, err = model.MediasModel.Count(ctx.Context())
+	statistics.Media, err = model.MediasModel().Count(ctx.Context())
 	if err != nil {
 		return nil, err
 	}
 
-	statistics.Order, err = model.OrdersModel.Count(ctx.Context(), table.Orders.Status.EQ(Int(int64(fields.OrderStatusCompleted))))
+	statistics.Order, err = model.OrdersModel().Count(ctx.Context(), table.Orders.Status.EQ(Int(int64(fields.OrderStatusCompleted))))
 	if err != nil {
 		return nil, err
 	}
 
-	statistics.User, err = model.UsersModel.Count(ctx.Context(), BoolExp(Bool(true)))
+	statistics.User, err = model.UsersModel().Count(ctx.Context(), BoolExp(Bool(true)))
 	if err != nil {
 		return nil, err
 	}
 
-	statistics.Amount, err = model.OrdersModel.SumAmount(ctx.Context())
+	statistics.Amount, err = model.OrdersModel().SumAmount(ctx.Context())
 	if err != nil {
 		return nil, err
 	}
diff --git a/backend/app/http/admin/uploads.go b/backend/app/http/admin/uploads.go
index a5f48ef..012cc11 100644
--- a/backend/app/http/admin/uploads.go
+++ b/backend/app/http/admin/uploads.go
@@ -38,7 +38,7 @@ type PreCheckResp struct {
 //	@Bind	ext path
 //	@Bind	mime query
 func (up *uploads) PreUploadCheck(ctx fiber.Ctx, md5, ext, mime string) (*PreCheckResp, error) {
-	_, err := model.MediasModel.GetByHash(ctx.Context(), md5)
+	_, err := model.MediasModel().GetByHash(ctx.Context(), md5)
 	if err != nil && errors.Is(err, qrm.ErrNoRows) {
 		preSign, err := up.oss.PreSignUpload(ctx.Context(), fmt.Sprintf("%s.%s", md5, ext), mime)
 		if err != nil {
@@ -63,7 +63,7 @@ type PostUploadedForm struct {
 //	@Router	/admin/uploads/post-uploaded-action [post]
 //	@Bind	body body
 func (up *uploads) PostUploadedAction(ctx fiber.Ctx, body *PostUploadedForm) error {
-	m, err := model.MediasModel.GetByHash(ctx.Context(), body.Md5)
+	m, err := model.MediasModel().GetByHash(ctx.Context(), body.Md5)
 	if err != nil && !errors.Is(err, qrm.ErrNoRows) {
 		return err
 	}
@@ -75,7 +75,7 @@ func (up *uploads) PostUploadedAction(ctx fiber.Ctx, body *PostUploadedForm) err
 		Hash:     body.Md5,
 		Path:     filepath.Join(UPLOAD_PATH, body.Md5+filepath.Ext(body.OriginalName)),
 	}
-	if err := model.MediasModel.Create(ctx.Context(), m); err != nil {
+	if err := model.MediasModel().Create(ctx.Context(), m); err != nil {
 		return err
 	}
 
diff --git a/backend/app/http/admin/users.go b/backend/app/http/admin/users.go
index 437ad81..4b08a2c 100644
--- a/backend/app/http/admin/users.go
+++ b/backend/app/http/admin/users.go
@@ -20,8 +20,8 @@ type users struct{}
 //	@Bind	pagination query
 //	@Bind	query query
 func (ctl *users) List(ctx fiber.Ctx, pagination *requests.Pagination, query *UserListQuery) (*requests.Pager, error) {
-	cond := model.UsersModel.BuildConditionWithKey(query.Keyword)
-	return model.UsersModel.List(ctx.Context(), pagination, cond)
+	cond := model.UsersModel().BuildConditionWithKey(query.Keyword)
+	return model.UsersModel().List(ctx.Context(), pagination, cond)
 }
 
 // Show user
@@ -29,7 +29,7 @@ func (ctl *users) List(ctx fiber.Ctx, pagination *requests.Pagination, query *Us
 //	@Router	/admin/users/:id [get]
 //	@Bind	id path
 func (ctl *users) Show(ctx fiber.Ctx, id int64) (*model.Users, error) {
-	return model.UsersModel.GetByID(ctx.Context(), id)
+	return model.UsersModel().GetByID(ctx.Context(), id)
 }
 
 // Articles show user bought articles
@@ -38,7 +38,7 @@ func (ctl *users) Show(ctx fiber.Ctx, id int64) (*model.Users, error) {
 //	@Bind	id path
 //	@Bind	pagination query
 func (ctl *users) Articles(ctx fiber.Ctx, id int64, pagination *requests.Pagination) (*requests.Pager, error) {
-	return model.PostsModel.Bought(ctx.Context(), id, pagination)
+	return model.PostsModel().Bought(ctx.Context(), id, pagination)
 }
 
 type UserBalance struct {
@@ -51,7 +51,7 @@ type UserBalance struct {
 //	@Bind	id path
 //	@Bind	balance body
 func (ctl *users) Balance(ctx fiber.Ctx, id int64, balance *UserBalance) error {
-	user, err := model.UsersModel.GetByID(ctx.Context(), id)
+	user, err := model.UsersModel().GetByID(ctx.Context(), id)
 	if err != nil {
 		return err
 	}
diff --git a/backend/app/http/auth.go b/backend/app/http/auth.go
index 4c85869..ee8fa55 100644
--- a/backend/app/http/auth.go
+++ b/backend/app/http/auth.go
@@ -89,7 +89,7 @@ func (ctl *auth) Login(ctx fiber.Ctx, code, state, redirect string) error {
 			Scope:             token.Scope,
 		}),
 	}
-	user, err := model.UsersModel.GetUserByOpenIDOrCreate(ctx.Context(), token.GetOpenID(), userModel)
+	user, err := model.UsersModel().GetUserByOpenIDOrCreate(ctx.Context(), token.GetOpenID(), userModel)
 	if err != nil {
 		return errors.Wrap(err, "failed to get user by openid")
 	}
diff --git a/backend/app/http/posts.go b/backend/app/http/posts.go
index 17b619d..5af0f70 100644
--- a/backend/app/http/posts.go
+++ b/backend/app/http/posts.go
@@ -45,7 +45,7 @@ func (ctl *posts) List(ctx fiber.Ctx, pagination *requests.Pagination, query *Li
 		conds.Post_Like(query.Keyword),
 	}
 
-	pager, err := model.PostsModel.List(ctx.Context(), pagination, conds...)
+	pager, err := model.PostsModel().List(ctx.Context(), pagination, conds...)
 	if err != nil {
 		log.WithError(err).Errorf("post list err: %v", err)
 		return nil, err
@@ -59,7 +59,7 @@ func (ctl *posts) List(ctx fiber.Ctx, pagination *requests.Pagination, query *Li
 		}
 
 		items := lo.FilterMap(pager.Items.([]model.Posts), func(item model.Posts, _ int) (PostItem, bool) {
-			medias, err := model.PostsModel.GetMediaByIds(ctx.Context(), item.HeadImages.Data)
+			medias, err := model.PostsModel().GetMediaByIds(ctx.Context(), item.HeadImages.Data)
 			if err != nil {
 				log.Errorf("GetMediaByIds err: %v", err)
 				return PostItem{}, false
@@ -118,7 +118,7 @@ type PostItem struct {
 func (ctl *posts) Show(ctx fiber.Ctx, id int64, user *model.Users) (*PostItem, error) {
 	log.Infof("Fetching post with ID: %d", id)
 
-	post, err := model.PostsModel.GetByID(ctx.Context(), id, conds.Post_NotDeleted(), conds.Post_Status(fields.PostStatusPublished))
+	post, err := model.PostsModel().GetByID(ctx.Context(), id, conds.Post_NotDeleted(), conds.Post_Status(fields.PostStatusPublished))
 	if err != nil {
 		log.WithError(err).Errorf("GetByID err: %v", err)
 		return nil, err
@@ -129,7 +129,7 @@ func (ctl *posts) Show(ctx fiber.Ctx, id int64, user *model.Users) (*PostItem, e
 		return nil, err
 	}
 
-	medias, err := model.PostsModel.GetMediaByIds(ctx.Context(), post.HeadImages.Data)
+	medias, err := model.PostsModel().GetMediaByIds(ctx.Context(), post.HeadImages.Data)
 	if err != nil {
 		return nil, err
 	}
@@ -179,7 +179,7 @@ func (ctl *posts) Play(ctx fiber.Ctx, id int64, user *model.Users) (*PlayUrl, er
 	}
 
 	log.Infof("Fetching play URL for post ID: %d", id)
-	post, err := model.PostsModel.GetByID(ctx.Context(), id)
+	post, err := model.PostsModel().GetByID(ctx.Context(), id)
 	if err != nil {
 		log.WithError(err).Errorf("GetByID err: %v", err)
 		return nil, err
@@ -188,7 +188,7 @@ func (ctl *posts) Play(ctx fiber.Ctx, id int64, user *model.Users) (*PlayUrl, er
 
 	for _, asset := range post.Assets.Data {
 		if asset.Type == "video/mp4" && asset.Metas != nil && asset.Metas.Short == preview {
-			media, err := model.MediasModel.GetByID(ctx.Context(), asset.Media)
+			media, err := model.MediasModel().GetByID(ctx.Context(), asset.Media)
 			if err != nil {
 				log.WithError(err).Errorf("medias GetByID err: %v", err)
 				return nil, err
@@ -222,7 +222,7 @@ func (ctl *posts) Mine(ctx fiber.Ctx, pagination *requests.Pagination, query *Li
 		conds.Post_Status(fields.PostStatusPublished),
 		conds.Post_Like(query.Keyword),
 	}
-	pager, err := model.UsersModel.PostList(ctx.Context(), user.ID, pagination, conds...)
+	pager, err := model.UsersModel().PostList(ctx.Context(), user.ID, pagination, conds...)
 	if err != nil {
 		log.WithError(err).Errorf("post list err: %v", err)
 		return nil, err
@@ -231,7 +231,7 @@ func (ctl *posts) Mine(ctx fiber.Ctx, pagination *requests.Pagination, query *Li
 	postIds := lo.Map(pager.Items.([]model.Posts), func(item model.Posts, _ int) int64 { return item.ID })
 	if len(postIds) > 0 {
 		items := lo.FilterMap(pager.Items.([]model.Posts), func(item model.Posts, _ int) (PostItem, bool) {
-			medias, err := model.PostsModel.GetMediaByIds(ctx.Context(), item.HeadImages.Data)
+			medias, err := model.PostsModel().GetMediaByIds(ctx.Context(), item.HeadImages.Data)
 			if err != nil {
 				log.Errorf("GetMediaByIds err: %v", err)
 				return PostItem{}, false
@@ -279,19 +279,19 @@ func (ctl *posts) Buy(ctx fiber.Ctx, id int64, user *model.Users) (*wechat.JSAPI
 		return nil, errors.New("已经购买过了")
 	}
 
-	post, err := model.PostsModel.GetByID(ctx.Context(), id)
+	post, err := model.PostsModel().GetByID(ctx.Context(), id)
 	if err != nil {
 		return nil, errors.Wrapf(err, " failed to get post: %d", id)
 	}
 	payPrice := post.Price * int64(post.Discount) / 100
 
-	order, err := model.OrdersModel.Create(ctx.Context(), user.ID, post.ID)
+	order, err := model.OrdersModel().Create(ctx.Context(), user.ID, post.ID)
 	if err != nil {
 		return nil, errors.Wrap(err, "订单创建失败")
 	}
 
 	if user.Balance >= payPrice {
-		if err := model.OrdersModel.SetMeta(ctx.Context(), order.ID, func(om fields.OrderMeta) fields.OrderMeta {
+		if err := order.SetMeta(ctx.Context(), func(om fields.OrderMeta) fields.OrderMeta {
 			om.CostBalance = payPrice
 			return om
 		}); err != nil {
@@ -309,7 +309,7 @@ func (ctl *posts) Buy(ctx fiber.Ctx, id int64, user *model.Users) (*wechat.JSAPI
 	}
 
 	payPrice = payPrice - user.Balance
-	if err := model.OrdersModel.SetMeta(ctx.Context(), order.ID, func(om fields.OrderMeta) fields.OrderMeta {
+	if err := order.SetMeta(ctx.Context(), func(om fields.OrderMeta) fields.OrderMeta {
 		om.CostBalance = user.Balance
 		return om
 	}); err != nil {
diff --git a/backend/app/jobs/balance_pay_notify.go b/backend/app/jobs/balance_pay_notify.go
index 822f480..174871b 100644
--- a/backend/app/jobs/balance_pay_notify.go
+++ b/backend/app/jobs/balance_pay_notify.go
@@ -45,7 +45,7 @@ func (w *BalancePayNotifyWorker) Work(ctx context.Context, job *Job[BalancePayNo
 	log.Infof("[Start] Working on job with strings: %+v", job.Args)
 	defer log.Infof("[End] Finished %s", job.Args.Kind())
 
-	order, err := model.OrdersModel.GetByOrderNo(context.Background(), job.Args.OrderNo)
+	order, err := model.OrdersModel().GetByOrderNo(context.Background(), job.Args.OrderNo)
 	if err != nil {
 		log.Errorf("GetByOrderNo error:%v", err)
 		return err
@@ -56,7 +56,7 @@ func (w *BalancePayNotifyWorker) Work(ctx context.Context, job *Job[BalancePayNo
 		return JobCancel(fmt.Errorf("Order already paid, currently status: %d", order.Status))
 	}
 
-	user, err := model.UsersModel.GetByID(context.Background(), order.UserID)
+	user, err := model.UsersModel().GetByID(context.Background(), order.UserID)
 	if err != nil {
 		log.Errorf("GetByID error:%v", err)
 		return errors.Wrap(err, "get user error")
@@ -93,7 +93,7 @@ func (w *BalancePayNotifyWorker) Work(ctx context.Context, job *Job[BalancePayNo
 		return errors.Wrap(err, "BuyPosts error")
 	}
 
-	if err := model.OrdersModel.Update(context.Background(), order); err != nil {
+	if err := order.Update(context.Background()); err != nil {
 		log.Errorf("Update order error:%v", err)
 		return errors.Wrap(err, "Update order error")
 	}
diff --git a/backend/app/jobs/download_from_alioss.go b/backend/app/jobs/download_from_alioss.go
index fbfab90..ff56ef4 100644
--- a/backend/app/jobs/download_from_alioss.go
+++ b/backend/app/jobs/download_from_alioss.go
@@ -55,7 +55,7 @@ func (w *DownloadFromAliOSSWorker) Work(ctx context.Context, job *Job[DownloadFr
 	log.Infof("[Start] Working on job with strings: %+v", job.Args)
 	defer log.Infof("[End] Finished %s", job.Args.Kind())
 
-	media, err := model.MediasModel.GetByHash(ctx, job.Args.MediaHash)
+	media, err := model.MediasModel().GetByHash(ctx, job.Args.MediaHash)
 	if err != nil {
 		log.Errorf("Error getting media by ID: %v", err)
 		return JobCancel(err)
diff --git a/backend/app/jobs/publish_draft_posts.go b/backend/app/jobs/publish_draft_posts.go
index 0921e71..50b462e 100644
--- a/backend/app/jobs/publish_draft_posts.go
+++ b/backend/app/jobs/publish_draft_posts.go
@@ -56,13 +56,13 @@ func (w *PublishDraftPostsWorker) Work(ctx context.Context, job *Job[PublishDraf
 	log.Infof("[Start] Working on job with strings: %+v", job.Args)
 	defer log.Infof("[End] Finished %s", job.Args.Kind())
 
-	media, err := model.MediasModel.GetByHash(ctx, job.Args.MediaHash)
+	media, err := model.MediasModel().GetByHash(ctx, job.Args.MediaHash)
 	if err != nil {
 		log.Errorf("Error getting media by ID: %v", err)
 		return JobCancel(err)
 	}
 
-	relationMedias, err := model.MediasModel.GetRelations(ctx, media.Hash)
+	relationMedias, err := model.MediasModel().GetRelations(ctx, media.Hash)
 	if err != nil {
 		log.Errorf("Error getting relation medias: %v", err)
 		return JobCancel(err)
diff --git a/backend/app/jobs/video_cut.go b/backend/app/jobs/video_cut.go
index df8a94d..1b4308d 100644
--- a/backend/app/jobs/video_cut.go
+++ b/backend/app/jobs/video_cut.go
@@ -54,7 +54,7 @@ func (w *VideoCutWorker) Work(ctx context.Context, job *Job[VideoCut]) error {
 	log.Infof("[Start] Working on job with strings: %+v", job.Args)
 	defer log.Infof("[End] Finished %s", job.Args.Kind())
 
-	media, err := model.MediasModel.GetByHash(ctx, job.Args.MediaHash)
+	media, err := model.MediasModel().GetByHash(ctx, job.Args.MediaHash)
 	if err != nil {
 		log.Errorf("Error getting media by ID: %v", err)
 		return JobCancel(err)
@@ -81,7 +81,7 @@ func (w *VideoCutWorker) Work(ctx context.Context, job *Job[VideoCut]) error {
 		Short:      false,
 		Duration:   duration,
 	}
-	if err := model.MediasModel.UpdateMetas(ctx, media.ID, metas); err != nil {
+	if err := model.MediasModel().UpdateMetas(ctx, media.ID, metas); err != nil {
 		log.Errorf("Error updating media metas: %v", err)
 		return errors.Wrap(err, "update media metas")
 	}
diff --git a/backend/app/jobs/video_extract_head_image.go b/backend/app/jobs/video_extract_head_image.go
index bae54e5..f0898cc 100644
--- a/backend/app/jobs/video_extract_head_image.go
+++ b/backend/app/jobs/video_extract_head_image.go
@@ -57,7 +57,7 @@ func (w *VideoExtractHeadImageWorker) Work(ctx context.Context, job *Job[VideoEx
 	log.Infof("[Start] Working on job with strings: %+v", job.Args)
 	defer log.Infof("[End] Finished %s", job.Args.Kind())
 
-	media, err := model.MediasModel.GetByHash(ctx, job.Args.MediaHash)
+	media, err := model.MediasModel().GetByHash(ctx, job.Args.MediaHash)
 	if err != nil {
 		log.Errorf("Error getting media by ID: %v", err)
 		return JobCancel(err)
@@ -110,7 +110,7 @@ func (w *VideoExtractHeadImageWorker) Work(ctx context.Context, job *Job[VideoEx
 		log.Errorf("Error removing original file: %v", err)
 	}
 
-	if err := model.MediasModel.Create(ctx, imageMedia); err != nil {
+	if err := model.MediasModel().Create(ctx, imageMedia); err != nil {
 		log.Errorf("Error creating media record: %v", err)
 		return errors.Wrap(err, "failed to create media record")
 	}
diff --git a/backend/app/jobs/video_store_short.go b/backend/app/jobs/video_store_short.go
index 2af5421..fc72bb5 100644
--- a/backend/app/jobs/video_store_short.go
+++ b/backend/app/jobs/video_store_short.go
@@ -57,7 +57,7 @@ func (w *VideoStoreShortWorker) Work(ctx context.Context, job *Job[VideoStoreSho
 	log.Infof("[Start] Working on job with strings: %+v", job.Args)
 	defer log.Infof("[End] Finished %s", job.Args.Kind())
 
-	media, err := model.MediasModel.GetByHash(ctx, job.Args.MediaHash)
+	media, err := model.MediasModel().GetByHash(ctx, job.Args.MediaHash)
 	if err != nil {
 		log.Errorf("Error getting media by ID: %v", err)
 		return JobCancel(err)
@@ -112,7 +112,7 @@ func (w *VideoStoreShortWorker) Work(ctx context.Context, job *Job[VideoStoreSho
 	}
 
 	log.Infof("pending create media record %s", job.Args.FilePath)
-	if err := model.MediasModel.Create(ctx, mediaModel); err != nil {
+	if err := model.MediasModel().Create(ctx, mediaModel); err != nil {
 		log.Errorf("Error saving media record: %v data: %+v", err, mediaModel)
 		return err
 	}
diff --git a/backend/app/jobs/wechat_pay_notify.go b/backend/app/jobs/wechat_pay_notify.go
index c973142..d0e1775 100644
--- a/backend/app/jobs/wechat_pay_notify.go
+++ b/backend/app/jobs/wechat_pay_notify.go
@@ -53,7 +53,7 @@ func (w *WechatPayNotifyWorker) Work(ctx context.Context, job *Job[WechatPayNoti
 		return JobCancel(errors.New("TradeState is not SUCCESS"))
 	}
 
-	order, err := model.OrdersModel.GetByOrderNo(context.Background(), notify.OutTradeNo)
+	order, err := model.OrdersModel().GetByOrderNo(context.Background(), notify.OutTradeNo)
 	if err != nil {
 		log.Errorf("GetByOrderNo error:%v", err)
 		return err
@@ -64,7 +64,7 @@ func (w *WechatPayNotifyWorker) Work(ctx context.Context, job *Job[WechatPayNoti
 		return JobCancel(fmt.Errorf("Order already paid, currently status: %d", order.Status))
 	}
 
-	user, err := model.UsersModel.GetByID(context.Background(), order.UserID)
+	user, err := model.UsersModel().GetByID(context.Background(), order.UserID)
 	if err != nil {
 		return errors.Wrapf(err, "get user by id(%d) failed", order.UserID)
 	}
@@ -103,7 +103,7 @@ func (w *WechatPayNotifyWorker) Work(ctx context.Context, job *Job[WechatPayNoti
 		return errors.Wrap(err, "BuyPosts error")
 	}
 
-	if err := model.OrdersModel.Update(context.Background(), order); err != nil {
+	if err := order.Update(context.Background()); err != nil {
 		log.Errorf("Update order error:%v", err)
 		return errors.Wrap(err, "Update order error")
 	}
diff --git a/backend/app/jobs/wechat_refund_notify.go b/backend/app/jobs/wechat_refund_notify.go
index d40b4e9..564c090 100644
--- a/backend/app/jobs/wechat_refund_notify.go
+++ b/backend/app/jobs/wechat_refund_notify.go
@@ -47,13 +47,13 @@ func (w *WechatRefundNotifyWorker) Work(ctx context.Context, job *Job[WechatRefu
 
 	notify := job.Args.Notify
 
-	order, err := model.OrdersModel.GetByOrderNo(context.Background(), notify.OutTradeNo)
+	order, err := model.OrdersModel().GetByOrderNo(context.Background(), notify.OutTradeNo)
 	if err != nil {
 		log.Errorf("GetByOrderNo error:%v", err)
 		return err
 	}
 
-	user, err := model.UsersModel.GetByID(context.Background(), order.UserID)
+	user, err := model.UsersModel().GetByID(context.Background(), order.UserID)
 	if err != nil {
 		log.Errorf("GetByID error:%v", err)
 		return err
@@ -88,7 +88,7 @@ func (w *WechatRefundNotifyWorker) Work(ctx context.Context, job *Job[WechatRefu
 		}
 	}
 
-	if err := model.OrdersModel.Update(context.Background(), order); err != nil {
+	if err := order.Update(context.Background()); err != nil {
 		log.Errorf("Update order error:%v", err)
 		return errors.Wrap(err, "Update order error")
 	}
diff --git a/backend/app/middlewares/mid_auth.go b/backend/app/middlewares/mid_auth.go
index 975b24a..b235746 100644
--- a/backend/app/middlewares/mid_auth.go
+++ b/backend/app/middlewares/mid_auth.go
@@ -26,7 +26,7 @@ func (f *Middlewares) Auth(ctx fiber.Ctx) error {
 	}
 
 	if f.app.IsDevMode() && false {
-		user, err := model.UsersModel.GetByID(ctx.Context(), 1)
+		user, err := model.UsersModel().GetByID(ctx.Context(), 1)
 		if err != nil {
 			return ctx.Send([]byte("User not found"))
 		}
@@ -66,7 +66,7 @@ func (f *Middlewares) Auth(ctx fiber.Ctx) error {
 		return ctx.Redirect().To(fullUrl)
 	}
 
-	user, err := model.UsersModel.GetByID(ctx.Context(), jwt.UserID)
+	user, err := model.UsersModel().GetByID(ctx.Context(), jwt.UserID)
 	if err != nil {
 		// remove cookie
 		ctx.ClearCookie("token")
diff --git a/backend/app/model/medias_test.go b/backend/app/model/medias_test.go
index ce9ae2c..0548985 100644
--- a/backend/app/model/medias_test.go
+++ b/backend/app/model/medias_test.go
@@ -52,7 +52,7 @@ func (s *MediasTestSuite) Test_countByCondition() {
 		Convey("no cond", func() {
 			database.Truncate(context.Background(), db, table.Medias.TableName())
 
-			cnt, err := MediasModel.countByCondition(context.Background(), nil)
+			cnt, err := MediasModel().countByCondition(context.Background(), nil)
 			Convey("should not return an error", func() {
 				So(err, ShouldBeNil)
 			})
@@ -110,7 +110,7 @@ func (s *MediasTestSuite) Test_BatchCreate() {
 
 			count := 10
 			for i := 0; i < count; i++ {
-				err := MediasModel.BatchCreate(context.Background(), models)
+				err := MediasModel().BatchCreate(context.Background(), models)
 				Convey("Create should not return an error: "+fmt.Sprintf("%d", i), func() {
 					So(err, ShouldBeNil)
 				})
@@ -132,12 +132,12 @@ func (s *MediasTestSuite) Test_Create() {
 				Path:      "path/to/media.pdf",
 			}
 
-			err := MediasModel.Create(context.Background(), model)
+			err := MediasModel().Create(context.Background(), model)
 			Convey("Create should not return an error", func() {
 				So(err, ShouldBeNil)
 			})
 
-			cnt, err := MediasModel.countByCondition(context.Background(), nil)
+			cnt, err := MediasModel().countByCondition(context.Background(), nil)
 			Convey("Count should not return an error", func() {
 				So(err, ShouldBeNil)
 			})
@@ -165,31 +165,31 @@ func (s *MediasTestSuite) Test_Page() {
 					Path:      "path/to/media.pdf",
 				}
 
-				err := MediasModel.Create(context.Background(), model)
+				err := MediasModel().Create(context.Background(), model)
 				So(err, ShouldBeNil)
 			}
 
-			cnt, err := MediasModel.countByCondition(context.Background(), nil)
+			cnt, err := MediasModel().countByCondition(context.Background(), nil)
 			So(err, ShouldBeNil)
 			So(cnt, ShouldEqual, 20)
 		})
 
 		Convey("Page", func() {
 			Convey("page 1", func() {
-				pager, err := MediasModel.List(context.Background(), &requests.Pagination{Page: 1, Limit: 10}, nil)
+				pager, err := MediasModel().List(context.Background(), &requests.Pagination{Page: 1, Limit: 10}, nil)
 				So(err, ShouldBeNil)
 				So(pager.Total, ShouldEqual, 20)
 				So(pager.Items, ShouldHaveLength, 10)
 			})
 			Convey("page 2", func() {
-				pager, err := MediasModel.List(context.Background(), &requests.Pagination{Page: 2, Limit: 10}, nil)
+				pager, err := MediasModel().List(context.Background(), &requests.Pagination{Page: 2, Limit: 10}, nil)
 				So(err, ShouldBeNil)
 				So(pager.Total, ShouldEqual, 20)
 				So(pager.Items, ShouldHaveLength, 10)
 			})
 
 			Convey("page 3", func() {
-				pager, err := MediasModel.List(context.Background(), &requests.Pagination{Page: 3, Limit: 10}, nil)
+				pager, err := MediasModel().List(context.Background(), &requests.Pagination{Page: 3, Limit: 10}, nil)
 				So(err, ShouldBeNil)
 				So(pager.Total, ShouldEqual, 20)
 				So(pager.Items, ShouldBeEmpty)
@@ -208,7 +208,7 @@ func (s *MediasTestSuite) Test_CreateGetID() {
 			Path:      "path/to/media.pdf",
 		}
 
-		err := MediasModel.Create(context.Background(), model)
+		err := MediasModel().Create(context.Background(), model)
 		So(err, ShouldBeNil)
 		So(model.ID, ShouldNotBeEmpty)
 
@@ -219,7 +219,7 @@ func (s *MediasTestSuite) Test_CreateGetID() {
 func (s *MediasTestSuite) Test_GetRelations() {
 	Convey("GetByHash", s.T(), func() {
 		hash := "ce4cd071128cef282cf315dda75bdab4"
-		media, err := MediasModel.GetRelations(context.Background(), hash)
+		media, err := MediasModel().GetRelations(context.Background(), hash)
 		So(err, ShouldBeNil)
 		So(media, ShouldNotBeNil)
 
diff --git a/backend/app/model/orders.go b/backend/app/model/orders.go
index a29de1a..411ac8f 100644
--- a/backend/app/model/orders.go
+++ b/backend/app/model/orders.go
@@ -99,7 +99,7 @@ func (m *Orders) List(ctx context.Context, pagination *requests.Pagination, cond
 		return nil, err
 	}
 
-	postsMap, err := PostsModel.GetPostsMapByIDs(ctx, lo.Map(orders, func(order Orders, _ int) int64 {
+	postsMap, err := PostsModel().GetPostsMapByIDs(ctx, lo.Map(orders, func(order Orders, _ int) int64 {
 		return order.PostID
 	}))
 	if err != nil {
@@ -107,7 +107,7 @@ func (m *Orders) List(ctx context.Context, pagination *requests.Pagination, cond
 		return nil, err
 	}
 
-	userMap, err := UsersModel.GetUsersMapByIDs(ctx, lo.Map(orders, func(order Orders, _ int) int64 {
+	userMap, err := UsersModel().GetUsersMapByIDs(ctx, lo.Map(orders, func(order Orders, _ int) int64 {
 		return order.UserID
 	}))
 	if err != nil {
@@ -151,7 +151,7 @@ func (m *Orders) List(ctx context.Context, pagination *requests.Pagination, cond
 
 // Create creates a new order
 func (o *Orders) Create(ctx context.Context, userId, postId int64) (*Orders, error) {
-	post, err := PostsModel.GetByID(ctx, postId)
+	post, err := PostsModel().GetByID(ctx, postId)
 	if err != nil {
 		return nil, errors.Wrap(err, "failed to get post")
 	}
@@ -172,48 +172,43 @@ func (o *Orders) Create(ctx context.Context, userId, postId int64) (*Orders, err
 	stmt := tbl.INSERT(tbl.MutableColumns).MODEL(m).RETURNING(tbl.AllColumns)
 	o.log().Infof("sql: %s", stmt.DebugSql())
 
-	var order Orders
-	if err := stmt.QueryContext(ctx, db, &order); err != nil {
+	if err := stmt.QueryContext(ctx, db, o); err != nil {
 		o.log().Errorf("error creating order: %v", err)
 		return nil, err
 	}
-	return &order, nil
+	return o, nil
 }
 
-func (m *Orders) SetMeta(ctx context.Context, id int64, metaFunc func(fields.OrderMeta) fields.OrderMeta) error {
-	order, err := m.GetByID(ctx, id)
-	if err != nil {
-		return errors.Wrap(err, "failed to get order")
-	}
-
+func (m *Orders) SetMeta(ctx context.Context, metaFunc func(fields.OrderMeta) fields.OrderMeta) error {
 	tbl := table.Orders
 	stmt := tbl.
 		UPDATE(tbl.Meta).
-		SET(fields.ToJson(metaFunc(order.Meta.Data))).
+		SET(fields.ToJson(metaFunc(m.Meta.Data))).
 		WHERE(
-			tbl.ID.EQ(Int64(id)),
-		)
+			tbl.ID.EQ(Int64(m.ID)),
+		).
+		RETURNING(tbl.AllColumns)
 	m.log().Infof("sql: %s", stmt.DebugSql())
 
-	if _, err := stmt.ExecContext(ctx, db); err != nil {
+	if err := stmt.QueryContext(ctx, db, m); err != nil {
 		m.log().Errorf("error set order meta: %v", err)
 		return err
 	}
 	return nil
 }
 
-// DeleteByID soft deletes an order by ID
-func (m *Orders) SetStatus(ctx context.Context, orderNo string, status fields.OrderStatus) error {
+func (m *Orders) SetStatus(ctx context.Context, status fields.OrderStatus) error {
 	tbl := table.Orders
 	stmt := tbl.
 		UPDATE(tbl.Status).
 		SET(status).
 		WHERE(
-			tbl.OrderNo.EQ(String(orderNo)),
-		)
+			tbl.ID.EQ(Int64(m.ID)),
+		).
+		RETURNING(tbl.AllColumns)
 	m.log().Infof("sql: %s", stmt.DebugSql())
 
-	if _, err := stmt.ExecContext(ctx, db); err != nil {
+	if err := stmt.QueryContext(ctx, db, m); err != nil {
 		m.log().Errorf("error set order status: %v", err)
 		return err
 	}
@@ -280,14 +275,14 @@ func (m *Orders) GetByOrderNo(ctx context.Context, orderNo string) (*Orders, err
 	return &order, nil
 }
 
-// SetTranscationID
-func (m *Orders) SetTranscationID(ctx context.Context, id int64, transactionID string) error {
+// SetTransactionID
+func (m *Orders) SetTransactionID(ctx context.Context, transactionID string) error {
 	tbl := table.Orders
 	stmt := tbl.
 		UPDATE(tbl.TransactionID).
 		SET(String(transactionID)).
 		WHERE(
-			tbl.ID.EQ(Int64(id)),
+			tbl.ID.EQ(Int64(m.ID)),
 		)
 	m.log().Infof("sql: %s", stmt.DebugSql())
 
@@ -299,7 +294,7 @@ func (m *Orders) SetTranscationID(ctx context.Context, id int64, transactionID s
 }
 
 // Update
-func (m *Orders) Update(ctx context.Context, order *Orders) error {
+func (m *Orders) Update(ctx context.Context) error {
 	tbl := table.Orders
 	stmt := tbl.
 		UPDATE(
@@ -312,13 +307,14 @@ func (m *Orders) Update(ctx context.Context, order *Orders) error {
 				tbl.UserID,
 			),
 		).
-		MODEL(order).
+		MODEL(m).
 		WHERE(
-			tbl.ID.EQ(Int64(order.ID)),
-		)
+			tbl.ID.EQ(Int64(m.ID)),
+		).
+		RETURNING(tbl.AllColumns)
 	m.log().Infof("sql: %s", stmt.DebugSql())
 
-	if _, err := stmt.ExecContext(ctx, db); err != nil {
+	if err := stmt.QueryContext(ctx, db, m); err != nil {
 		m.log().Errorf("error updating order: %v", err)
 		return err
 	}
diff --git a/backend/app/model/provider.gen.go b/backend/app/model/provider.gen.go
index 78e7dc8..3ec7ba8 100644
--- a/backend/app/model/provider.gen.go
+++ b/backend/app/model/provider.gen.go
@@ -14,60 +14,19 @@ import (
 )
 
 var db *sql.DB
-var MediasModel *Medias
-var OrdersModel *Orders
-var PostsModel *Posts
-var UsersModel *Users
 
-func Transaction(ctx context.Context) (*sql.Tx, error) {
-	return db.Begin()
-}
-func DB() *sql.DB {
-	return db
-}
+func MediasModel() *Medias { return &Medias{} }
+func OrdersModel() *Orders { return &Orders{} }
+func PostsModel() *Posts   { return &Posts{} }
+func UsersModel() *Users   { return &Users{} }
+
+func Transaction(ctx context.Context) (*sql.Tx, error) { return db.Begin() }
+
+func DB() *sql.DB { return db }
 
 func Provide(opts ...opt.Option) error {
-	if err := container.Container.Provide(func() (*Medias, error) {
-		obj := &Medias{}
-		return obj, nil
-	}); err != nil {
-		return err
-	}
-
-	if err := container.Container.Provide(func() (*Orders, error) {
-		obj := &Orders{}
-		return obj, nil
-	}); err != nil {
-		return err
-	}
-
-	if err := container.Container.Provide(func() (*Posts, error) {
-		obj := &Posts{}
-		return obj, nil
-	}); err != nil {
-		return err
-	}
-
-	if err := container.Container.Provide(func() (*Users, error) {
-		obj := &Users{}
-		return obj, nil
-	}); err != nil {
-		return err
-	}
-
-	if err := container.Container.Provide(func(
-		_db *sql.DB,
-		medias *Medias,
-		orders *Orders,
-		posts *Posts,
-		users *Users,
-	) (contracts.Initial, error) {
+	if err := container.Container.Provide(func(_db *sql.DB) (contracts.Initial, error) {
 		db = _db
-		MediasModel = medias
-		OrdersModel = orders
-		PostsModel = posts
-		UsersModel = users
-
 		return nil, nil
 	}, atom.GroupInitial); err != nil {
 		return err