学生端选课进课闭环

Html/apps/services/course_service.py

@@ -10,21 +10,43 @@ from ..services.cos_service import upload_file, delete_file
 
 from ..models.material import Material
 
-# 假设你已有这两个 loader
-from db.course import load_course_from_json
 
-def load_course(course_id: str):
-    return load_course_from_json(
-        course_id, course_data_dir=current_app.config["COURSE_DATA_DIR"]
-    )
+def get_new_edit_materials(num: int)->List[Material]:
+    mongo = current_app.extensions["mongo"]
+    materials = mongo.db.materials.find().sort("updated_at", -1).limit(num)
+    returnCode = []
+    for material in materials:
+        returnCode.append(Material(**material))
+        returnCode[-1]._id = str(material['_id'])
+    return returnCode
+
+def user_selected_course(user_obj):
+    briefs = []
+    for cid in getattr(user_obj, "select_course", []):
+        course_obj = load_material(cid)
+        brief={}
+        brief["_id"] = cid
+        brief["name"] = course_obj.name
+        brief["description"] = course_obj.description
+        brief["image_url"] = course_obj.image_url
+        brief["created_at"] = course_obj.created_at.strftime("%Y-%m-%d %H:%M:%S")
+        brief["updated_at"] = course_obj.updated_at.strftime("%Y-%m-%d %H:%M:%S")
+        brief["chapters"] = [chapter.model_dump() for chapter in course_obj.chapters]
+        briefs.append(brief)
+    return briefs
 
 def user_selected_course_briefs(user_obj):
     """根据用户对象的选课列表，拼装课程简要信息数组"""
-    course_list = current_app.extensions["course_list"]
     briefs = []
     for cid in getattr(user_obj, "select_course", []):
-        course_obj = load_course(cid)
-        brief = course_list.get_course_brief_info(cid, course_obj)
+        course_obj = load_material(cid)
+        brief={}
+        brief["_id"] = cid
+        brief["name"] = course_obj.name
+        brief["description"] = course_obj.description
+        brief["image_url"] = course_obj.image_url
+        brief["created_at"] = course_obj.created_at.strftime("%Y-%m-%d %H:%M:%S")
+        brief["updated_at"] = course_obj.updated_at.strftime("%Y-%m-%d %H:%M:%S")
         briefs.append(brief)
     return briefs
 
@@ -45,6 +67,7 @@ def create_material(teacher_id, material_name, description, chapters, image_url)
 def load_material(material_id):
     mongo = current_app.extensions["mongo"]
     material = mongo.db.materials.find_one({"_id": ObjectId(material_id)})
+    material['_id'] = material_id
     return Material(**material)
 
 def update_material(material_id, chapters):