Add inventory correction stuff

py/jon/templates/inventory/read_item.html

@@ -53,6 +53,28 @@
   </table>
 </fieldset>
 
+<fieldset>
+  <legend>Aktionen</legend>
+  
+  <form method="POST" action="/inventory/correction">
+    <input name="item_id" type="hidden" value="{{ item.item_id }}">
+    <input name="correction_comment" type="hidden" value="Verlust">
+    <input name="correction_delta" type="hidden" value="{{ -item.units_left }}">
+    <button{% if item.units_left == 0 %} disabled{% endif %}>Inventar zu 0 korrigieren</button>
+  </form>
+  
+  <form method="POST" action="/inventory/correction">
+    <input name="item_id" type="hidden" value="{{ item.item_id }}">
+    <input name="correction_comment" type="text" value="" placeholder="Kommentar">
+    <input name="correction_delta" type="number" value="" placeholder="Delta">
+    <button>Inventar korrigieren</button>
+  </form>
+
+  <form method="POST" action="/inventory/item/{{ item.item_id }}/deactivate">
+    <button{% if item.units_left != 0 %} disabled{% endif %}>Inventar- und Snackeintrag deaktivieren</button>
+  </form>
+</fieldset>
+
 <fieldset>
   <legend>Snackeinträge für {{ item.item_id }}</legend>
 
@@ -101,7 +123,7 @@
     </tr>
     {% for item in same_barcode_items %}
     <tr>
-      <td><a href="/inventory/{{ item.item_id }}">{{ item.item_id }}</a></td>
+      <td><a href="/inventory/item/{{ item.item_id }}">{{ item.item_id }}</a></td>
       <td><code>{{ item.item_barcode }}</code></td>
       <td>{{ item.name }}</td>
       <td class="--align-right">{{ format_currency(item.unit_price) }}</td>