修复公共电子屏路由错误的bug

fzjgact/huodong/templates/public_screens.html

@@ -40,7 +40,13 @@
         {% for screen in public_screens %}
             <div class="border rounded-lg overflow-hidden shadow-md hover:shadow-lg transition-shadow">
                 <div class="relative">
+                    {% if screen.image %}
                         <img src="{{ screen.image.url }}" alt="{{ screen.get_screen_type_display }}" class="w-full h-[150px] object-cover cursor-pointer" onclick="openModal('{{ screen.image.url }}')">
+                    {% else %}
+                        <div class="w-full h-[150px] bg-gray-200 flex items-center justify-center">
+                            <span class="text-gray-500">暂无图片</span>
+                        </div>
+                    {% endif %}
                     <div class="absolute top-2 right-2 bg-black bg-opacity-50 text-white px-2 py-1 rounded text-sm">
                         {{ screen.get_screen_type_display }}
                     </div>