Update invoice form

nummi/main/templates/main/form/invoice.html

@@ -13,11 +13,16 @@
           type="text/css" />
 {% endblock %}
 {% block body %}
-    <h1>{{ form.instance }}</h1>
-    {% spaceless %}
-        <form id="transaction" method="post" enctype="multipart/form-data">
-            {% csrf_token %}
-            {{ form }}
-        </form>
-    {% endspaceless %}
+    {% with invoice=form.instance %}
+        <h1>{{ invoice }}</h1>
+        <p>
+            <a href="{{ invoice.transaction.get_absolute_url }}">{{ invoice.transaction }}</a>
+        </p>
+        {% spaceless %}
+            <form id="transaction" method="post" enctype="multipart/form-data">
+                {% csrf_token %}
+                {{ form }}
+            </form>
+        {% endspaceless %}
+    {% endwith %}
 {% endblock %}