good version for 算法注册

backend/migrate_add_service_fields.py

@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+"""数据库迁移脚本：为algorithm_services表添加技术分类和输出类型字段"""
+
+import sys
+import os
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+
+from sqlalchemy import text
+from app.models.database import engine
+
+def migrate():
+    """执行数据库迁移"""
+    try:
+        with engine.connect() as conn:
+            # 检查字段是否已存在（PostgreSQL语法）
+            result = conn.execute(text("""
+                SELECT column_name 
+                FROM information_schema.columns 
+                WHERE table_name = 'algorithm_services'
+            """))
+            columns = [row[0] for row in result.fetchall()]
+            
+            # 添加 tech_category 字段
+            if 'tech_category' not in columns:
+                conn.execute(text("ALTER TABLE algorithm_services ADD COLUMN tech_category VARCHAR(50) DEFAULT 'computer_vision'"))
+                print("✓ 已添加 tech_category 字段到 algorithm_services 表")
+            else:
+                print("✓ tech_category 字段已存在于 algorithm_services 表")
+            
+            # 添加 output_type 字段
+            if 'output_type' not in columns:
+                conn.execute(text("ALTER TABLE algorithm_services ADD COLUMN output_type VARCHAR(50) DEFAULT 'image'"))
+                print("✓ 已添加 output_type 字段到 algorithm_services 表")
+            else:
+                print("✓ output_type 字段已存在于 algorithm_services 表")
+            
+            conn.commit()
+            print("\n数据库迁移完成！")
+            
+    except Exception as e:
+        print(f"数据库迁移失败: {e}")
+        sys.exit(1)
+
+if __name__ == "__main__":
+    migrate()