重构扑克牌设计系统：修复后端渲染bug，重写前端编辑器

backend/apps/projects/views.py

@@ -18,7 +18,15 @@ def project_list(request):
         return Response(serializer.data)
 
     elif request.method == 'POST':
-        serializer = ProjectSerializer(data=request.data)
+        # 自动补默认 design/card_overrides/number_layout
+        data = dict(request.data or {})
+        if 'design' not in data:
+            data['design'] = Project._meta.get_field('design').default()
+        if 'card_overrides' not in data:
+            data['card_overrides'] = Project._meta.get_field('card_overrides').default()
+        if 'number_layout' not in data:
+            data['number_layout'] = Project._meta.get_field('number_layout').default()
+        serializer = ProjectSerializer(data=data)
         if serializer.is_valid():
             serializer.save()
             return Response(serializer.data, status=status.HTTP_201_CREATED)
@@ -38,7 +46,7 @@ def project_detail(request, pk):
         return Response(serializer.data)
 
     elif request.method == 'PUT':
-        serializer = ProjectSerializer(project, data=request.data)
+        serializer = ProjectSerializer(project, data=request.data, partial=True)
         if serializer.is_valid():
             serializer.save()
             return Response(serializer.data)
@@ -49,6 +57,27 @@ def project_detail(request, pk):
         return Response(status=status.HTTP_204_NO_CONTENT)
 
 
+@api_view(['POST'])
+def project_save_design(request, pk):
+    """整体保存项目设计（design / card_overrides / number_layout）"""
+    try:
+        project = Project.objects.get(pk=pk)
+    except Project.DoesNotExist:
+        return Response({'error': 'Project not found'}, status=status.HTTP_404_NOT_FOUND)
+
+    for field in ('design', 'card_overrides', 'number_layout', 'face_orientations'):
+        if field in request.data:
+            setattr(project, field, request.data[field])
+    project.save()
+    return Response({
+        'ok': True,
+        'design': project.design,
+        'card_overrides': project.card_overrides,
+        'number_layout': project.number_layout,
+        'face_orientations': project.face_orientations,
+    })
+
+
 @api_view(['GET', 'POST'])
 def asset_list(request, project_pk):
     """获取项目素材列表或上传新素材"""
@@ -59,7 +88,7 @@ def asset_list(request, project_pk):
 
     if request.method == 'GET':
         assets = project.assets.all()
-        serializer = AssetSerializer(assets, many=True)
+        serializer = AssetSerializer(assets, many=True, context={'request': request})
         return Response(serializer.data)
 
     elif request.method == 'POST':
@@ -75,19 +104,21 @@ def asset_list(request, project_pk):
         full_dir = os.path.join(settings.MEDIA_ROOT, project_media_dir)
         os.makedirs(full_dir, exist_ok=True)
 
-        # 保存文件
-        file_name = f"{asset_key}_{file.name}"
+        # 避免重名覆盖：补上时间戳
+        from time import time
+        ts = int(time() * 1000)
+        file_name = f"{asset_key}_{ts}_{file.name}"
         file_path = os.path.join(project_media_dir, file_name)
         saved_path = default_storage.save(file_path, file)
 
         # 获取图片尺寸
+        width, height = None, None
         try:
             img = Image.open(file)
             width, height = img.size
-        except:
-            width, height = None, None
+        except Exception:
+            pass
 
-        # 创建Asset记录
         asset = Asset.objects.create(
             project=project,
             asset_type=asset_type,
@@ -95,10 +126,10 @@ def asset_list(request, project_pk):
             file_path=saved_path,
             file_name=file_name,
             width=width,
-            height=height
+            height=height,
         )
 
-        serializer = AssetSerializer(asset)
+        serializer = AssetSerializer(asset, context={'request': request})
         return Response(serializer.data, status=status.HTTP_201_CREATED)
 
 
@@ -112,15 +143,16 @@ def asset_detail(request, project_pk, asset_pk):
         return Response({'error': 'Asset not found'}, status=status.HTTP_404_NOT_FOUND)
 
     if request.method == 'GET':
-        serializer = AssetSerializer(asset)
+        serializer = AssetSerializer(asset, context={'request': request})
         return Response(serializer.data)
 
     elif request.method == 'DELETE':
-        # 删除文件
         if asset.file_path:
             file_full_path = os.path.join(settings.MEDIA_ROOT, asset.file_path)
             if os.path.exists(file_full_path):
-                os.remove(file_full_path)
-
+                try:
+                    os.remove(file_full_path)
+                except OSError:
+                    pass
         asset.delete()
-        return Response(status=status.HTTP_204_NO_CONTENT)
+        return Response(status=status.HTTP_204_NO_CONTENT)