rename chapter/lesson

Html/apps/services/course_service.py

@@ -92,6 +92,44 @@ def add_material_chapter(material_id, chapter_name, teacher_id):
             {'$push': {'chapters': {'chapter_name': chapter_name, 'lessons': []}}})
         return True
 
+def rename_material_structure(material_id, is_chapter, chapter_name, lesson_name, new_name):
+    mongo = current_app.extensions["mongo"]
+    material = mongo.db.materials.find_one({'_id': ObjectId(material_id)})
+    # 先检查是否存在
+    if is_chapter:
+        for chapter in material['chapters']:
+            if chapter['chapter_name'] == chapter_name:
+                break
+            return False
+        for chapter in material['chapters']:
+            if chapter['chapter_name'] == new_name:
+                return False
+    else:
+        for chapter in material['chapters']:
+            if chapter['chapter_name'] == chapter_name:
+                break
+            return False
+        for lesson in chapter['lessons']:
+            if lesson['lesson_name'] == lesson_name:
+                break
+        for lesson in chapter['lessons']:
+            if lesson['lesson_name'] == new_name:
+                return False
+
+    if is_chapter:
+        mongo.db.materials.update_one(
+            {'_id': ObjectId(material_id)},
+            {'$set': {'chapters.$[c].chapter_name': new_name}},
+            array_filters=[{'c.chapter_name': chapter_name}]
+        )
+    else:
+        mongo.db.materials.update_one(
+            {'_id': ObjectId(material_id)},
+            {'$set': {'chapters.$[c].lessons.$[l].lesson_name': new_name}},
+            array_filters=[{'c.chapter_name': chapter_name}, {'l.lesson_name': lesson_name}]
+        )
+    return True
+
 def delete_material_chapter_lesson(material_id, chapter_name, lesson_name, teacher_id):
     """
     删除指定课程的课时。