feat:更新博客统计模块

service/blog_service.py

@@ -1,7 +1,7 @@
 from typing import List
 
 from fastapi import Request
-from sqlalchemy import select, func, desc, and_, asc, delete
+from sqlalchemy import select, func, desc, and_, asc, delete, distinct
 from sqlalchemy.orm import Session
 
 from models.blog import Blog, BlogCategory, BlogVisit, BlogContent, BlogComment
@@ -235,10 +235,19 @@ def query_blog_category(db: Session) -> List[BlogCategoryResponse]:
 
 
 def query_blog_stats(db: Session) -> BlogStatsResponse:
+    blog_count_stmt = select(func.count(Blog.id)).where(Blog.is_approved == 1)
+    blog_count = db.execute(blog_count_stmt).scalar() or 0
+
+    word_count_stmt = select(func.sum(Blog.word_count)).where(Blog.is_approved == 1)
+    word_count = db.execute(word_count_stmt).scalar() or 0
+
+    category_count_stmt = select(func.count(distinct(Blog.category_id))).where(Blog.is_approved == 1)
+    category_count = db.execute(category_count_stmt).scalar() or 0
+
     return BlogStatsResponse(
-        blogCount=db.query(Blog).count(),
-        categoryCount=db.query(BlogCategory).count(),
-        wordCount=db.query(func.sum(Blog.word_count)).scalar()
+        blogCount=blog_count,
+        categoryCount=category_count,
+        wordCount=word_count
     )