diff --git a/pkg/internal/models/categories.go b/pkg/internal/models/categories.go
index 1eb7b37..31c5867 100644
--- a/pkg/internal/models/categories.go
+++ b/pkg/internal/models/categories.go
@@ -3,7 +3,7 @@ package models
 type Tag struct {
 	BaseModel
 
-	Alias       string    `json:"alias" gorm:"uniqueIndex" validate:"lowercase,alphanum,min=4,max=24"`
+	Alias       string    `json:"alias" gorm:"uniqueIndex" validate:"lowercase,alphanum"`
 	Name        string    `json:"name"`
 	Description string    `json:"description"`
 	Posts       []Post    `json:"posts" gorm:"many2many:post_tags"`
@@ -13,7 +13,7 @@ type Tag struct {
 type Category struct {
 	BaseModel
 
-	Alias       string    `json:"alias" gorm:"uniqueIndex" validate:"lowercase,alphanum,min=4,max=24"`
+	Alias       string    `json:"alias" gorm:"uniqueIndex" validate:"lowercase,alphanum"`
 	Name        string    `json:"name"`
 	Description string    `json:"description"`
 	Posts       []Post    `json:"posts" gorm:"many2many:post_categories"`
diff --git a/pkg/internal/services/articles.go b/pkg/internal/services/articles.go
index ee37aa9..4288f51 100644
--- a/pkg/internal/services/articles.go
+++ b/pkg/internal/services/articles.go
@@ -54,6 +54,8 @@ func GetArticleWithAlias(tx *gorm.DB, alias string, ignoreLimitation ...bool) (m
 	var item models.Article
 	if err := tx.
 		Where("alias = ?", alias).
+		Preload("Tags").
+		Preload("Categories").
 		Preload("Realm").
 		Preload("Author").
 		First(&item).Error; err != nil {
@@ -71,6 +73,8 @@ func GetArticle(tx *gorm.DB, id uint, ignoreLimitation ...bool) (models.Article,
 	var item models.Article
 	if err := tx.
 		Where("id = ?", id).
+		Preload("Tags").
+		Preload("Categories").
 		Preload("Realm").
 		Preload("Author").
 		First(&item).Error; err != nil {
diff --git a/pkg/internal/services/posts.go b/pkg/internal/services/posts.go
index 0776a8e..b9fd418 100644
--- a/pkg/internal/services/posts.go
+++ b/pkg/internal/services/posts.go
@@ -62,6 +62,8 @@ func GetPostWithAlias(tx *gorm.DB, alias string, ignoreLimitation ...bool) (mode
 	var item models.Post
 	if err := tx.
 		Where("alias = ?", alias).
+		Preload("Tags").
+		Preload("Categories").
 		Preload("Realm").
 		Preload("Author").
 		Preload("ReplyTo").
@@ -83,6 +85,8 @@ func GetPost(tx *gorm.DB, id uint, ignoreLimitation ...bool) (models.Post, error
 	var item models.Post
 	if err := tx.
 		Where("id = ?", id).
+		Preload("Tags").
+		Preload("Categories").
 		Preload("Realm").
 		Preload("Author").
 		Preload("ReplyTo").