fix action url_for route and add upload image for manage_table html page

backstage/templates/tables/manage_table.html

@@ -2,7 +2,7 @@
 {% block main %}
 <h1>{{ title }}</h1>
 {% for content in contents %}
-  <form action="{{ url_for('room_planner.update', page=page, section_class=content.sectionClass) }}" method="POST">
+  <form action="{{ url_for(form_url, page=page, section_class=content.sectionClass) }}" method="POST" enctype="multipart/form-data">
   <table id="example" class="table table-striped table-bordered" cellspacing="0" width="60%">
     <thead>
       <tr>
@@ -20,10 +20,18 @@
           <tbody>
             <tr>
               <td>{{ loop.index }}</td>
-              <td>{{ key }}</td>
+              {% if key == "img" %}
+                <td><img src="http://127.0.0.1:1313/{{ data['src'] }}" width="80px" height="50px"></td>
+                <td>
+                  <input id="image" name="image-{{ loop.index }}" type="file" value="{{ data['src'] }}">
+                  <input name="{{ key }}-{{ loop.index }}" type="hidden" value="{{ data }}">
+                </td>
+              {% else %}
+              <td>文字</td>
               <td>
                 <input name="{{ key }}-{{ loop.index }}" class="form-control form-control-lg" value="{{ data }}">
               </td>
+              {% endif %}
               <td>
                 <div>
                   <form action="#" method="POST">