fix: 编辑保存失败时显示错误提示；修复只修改标签时返回False的问题

xian_favor/api.py

@@ -1781,15 +1781,23 @@ async function saveEdit() {
         is_starred: document.getElementById('editStarred').checked ? 1 : 0
     };
     
-    const res = await fetch(`${API_BASE}/items/${id}`, {
-        method: 'PUT',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify(data)
-    });
-    
-    if (res.ok) {
-        bootstrap.Modal.getInstance(document.getElementById('editModal')).hide();
-        refreshData();
+    try {
+        const res = await fetch(`${API_BASE}/items/${id}`, {
+            method: 'PUT',
+            headers: { 'Content-Type': 'application/json' },
+            body: JSON.stringify(data)
+        });
+        
+        const result = await res.json();
+        
+        if (res.ok && result.success) {
+            bootstrap.Modal.getInstance(document.getElementById('editModal')).hide();
+            refreshData();
+        } else {
+            alert('保存失败: ' + (result.error || '未知错误'));
+        }
+    } catch (e) {
+        alert('保存失败: ' + e.message);
     }
 }
 

xian_favor/db.py

@@ -263,6 +263,7 @@ class Database:
         allowed_fields = ['type', 'title', 'content', 'url', 'source', 'status', 'priority', 'due_date', 'note', 'is_starred']
         update_fields = {k: v for k, v in kwargs.items() if k in allowed_fields}
         
+        # 只有 tags 变化也算有效更新
         if not update_fields and 'tags' not in kwargs:
             return False
         
@@ -271,6 +272,11 @@ class Database:
         with self.get_conn() as conn:
             cursor = conn.cursor()
             
+            # 检查条目是否存在
+            cursor.execute("SELECT id FROM items WHERE id = ?", (item_id,))
+            if not cursor.fetchone():
+                return False
+            
             if update_fields:
                 set_clause = ", ".join(f"{k} = ?" for k in update_fields.keys())
                 set_clause += ", updated_at = ?"
@@ -285,7 +291,7 @@ class Database:
                     self._add_tags_to_item(conn, item_id, kwargs['tags'])
             
             conn.commit()
-            return cursor.rowcount > 0
+            return True
     
     def delete_item(self, item_id: int) -> bool:
         """删除条目"""