fix: 修复学员端成长路径按用户岗位匹配的逻辑，支持多岗位

backend/app/services/growth_path_service.py

@@ -20,6 +20,7 @@ from app.models.growth_path import (
 )
 from app.models.user_course_progress import UserCourseProgress, ProgressStatus
 from app.models.position import Position
+from app.models.position_member import PositionMember
 from app.schemas.growth_path import (
     GrowthPathCreate,
     GrowthPathUpdate,
@@ -335,6 +336,20 @@ class GrowthPathService:
         如果指定了岗位ID，返回该岗位的成长路径
         否则根据用户岗位自动匹配
         """
+        # 如果没有指定岗位，获取用户的岗位列表
+        user_position_ids = []
+        if not position_id:
+            pos_result = await db.execute(
+                select(PositionMember.position_id).where(
+                    and_(
+                        PositionMember.user_id == user_id,
+                        PositionMember.is_deleted == False
+                    )
+                )
+            )
+            user_position_ids = [row[0] for row in pos_result.fetchall()]
+            logger.info(f"用户 {user_id} 的岗位列表: {user_position_ids}")
+        
         # 查找成长路径
         query = select(GrowthPath).where(
             and_(
@@ -342,12 +357,38 @@ class GrowthPathService:
                 GrowthPath.is_active == True
             )
         )
-        if position_id:
-            query = query.where(GrowthPath.position_id == position_id)
-
-        query = query.order_by(GrowthPath.sort_order).limit(1)
+        
+        # 按 sort_order 排序获取所有激活的成长路径
+        query = query.order_by(GrowthPath.sort_order)
         result = await db.execute(query)
-        growth_path = result.scalar_one_or_none()
+        all_paths = result.scalars().all()
+        
+        growth_path = None
+        
+        if position_id:
+            # 如果指定了岗位ID，查找匹配的路径
+            for path in all_paths:
+                # 检查 position_ids (多岗位) 或 position_id (单岗位)
+                path_position_ids = path.position_ids or []
+                if path.position_id:
+                    path_position_ids = list(set(path_position_ids + [path.position_id]))
+                if position_id in path_position_ids:
+                    growth_path = path
+                    break
+        elif user_position_ids:
+            # 根据用户岗位匹配
+            for path in all_paths:
+                path_position_ids = path.position_ids or []
+                if path.position_id:
+                    path_position_ids = list(set(path_position_ids + [path.position_id]))
+                # 检查用户岗位是否与路径岗位有交集
+                if any(pid in path_position_ids for pid in user_position_ids):
+                    growth_path = path
+                    logger.info(f"匹配到成长路径: {path.id}, 路径岗位: {path_position_ids}")
+                    break
+        else:
+            # 没有岗位限制，返回第一个
+            growth_path = all_paths[0] if all_paths else None
 
         if not growth_path:
             return None