feat: update template

internal/service/admin/post.go

@@ -55,7 +55,7 @@ func (s *PostService) Create(ctx context.Context, req request.CreatePostRequest)
 	postID, err := db.WithTxResult(ctx, s.store, func(q *sqlc.Queries) (int32, error) {
 		params := sqlc.CreatePostParams{
 			Title:       req.Title,
-			CoverID:     &req.CoverID,
+			CoverID:     req.CoverID,
 			Slug:        req.Slug,
 			Content:     req.Content,
 			Summary:     req.Summary,
@@ -103,7 +103,6 @@ func (s *PostService) Update(ctx context.Context, id int32, req request.UpdatePo
 	return s.store.WithTx(ctx, func(q *sqlc.Queries) error {
 		params := sqlc.UpdatePostParams{
 			Title:       req.Title,
-			CoverID:     req.CoverID,
 			Slug:        req.Slug,
 			Content:     req.Content,
 			Summary:     req.Summary,
@@ -113,6 +112,13 @@ func (s *PostService) Update(ctx context.Context, id int32, req request.UpdatePo
 			ID:          id,
 		}
 
+		if req.CoverID.Set {
+			params.UpdateCoverID = true
+			if req.CoverID.Valid {
+				params.CoverID = &req.CoverID.Value
+			}
+		}
+
 		rows, err := q.UpdatePost(ctx, params)
 		if err != nil {
 			return dberr.MapUniqueViolation(err, dberr.PostSlugKey, errs.ErrSlugAlreadyExists)