Add back link to create forms linked to accounts, snapshots

nummi/main/templates/main/form/base.html

@@ -33,6 +33,7 @@
                 {% block h1 %}{{ instance }}{% endblock %}
             </h1>
         {% endif %}
+        {% block pre %}{% endblock %}
         <form method="post">
             {% csrf_token %}
             {% if instance.adding %}<input hidden name="next" value="{{ request.path }}" />{% endif %}

nummi/main/templates/main/form/snapshot.html

@@ -11,6 +11,13 @@
     {{ form.instance.sum|check:form.instance.diff }}
     {{ form.instance }}
 {% endblock %}
+{% block pre %}
+    {% if account %}
+        <p>
+            <a href="{{ account.get_absolute_url }}">{{ account.icon|remix }}{{ account }}</a>
+        </p>
+    {% endif %}
+{% endblock %}
 {% block tables %}
     {% if categories %}
         <h2>{% translate "Categories" %}</h2>

nummi/main/templates/main/form/transaction.html

@@ -6,6 +6,13 @@
 {% block h1_new %}
     {% translate "New transaction" %}
 {% endblock %}
+{% block pre %}
+    {% if snapshot %}
+        <p>
+            <a href="{{ snapshot.get_absolute_url }}">{{ snapshot }}</a>
+        </p>
+    {% endif %}
+{% endblock %}
 {% block tables %}
     {% if not form.instance.adding %}
         <h2>{% translate "Invoices" %}</h2>

nummi/main/views.py

@@ -73,7 +73,7 @@ class UserFormMixin:
 class NummiCreateView(UserMixin, UserFormMixin, CreateView):
     def form_valid(self, form):
         form.instance.user = self.request.user
-        self.next = form.data.get("next")
+        self.next = form.data.get("next", None)
         return super().form_valid(form)
 
     def get_success_url(self):
@@ -109,15 +109,18 @@ class TransactionCreateView(NummiCreateView):
     form_class = TransactionForm
     template_name = "main/form/transaction.html"
 
-    def get_form_kwargs(self):
-        return super().get_form_kwargs() | {
-            "initial": {
-                "snapshot": (
-                    self.kwargs.get("snapshot")
-                    or Snapshot.objects.filter(user=self.request.user).first()
-                ),
-            },
-        }
+    def get_initial(self):
+        _queryset = Snapshot.objects.filter(user=self.request.user)
+        if "snapshot" in self.kwargs:
+            self.snapshot = get_object_or_404(_queryset, pk=self.kwargs["snapshot"])
+        else:
+            self.snapshot = _queryset.first()
+        return {"snapshot": self.snapshot}
+
+    def get_context_data(self, **kwargs):
+        if "snapshot" in self.kwargs:
+            return super().get_context_data(**kwargs) | {"snapshot": self.snapshot}
+        return super().get_context_data(**kwargs)
 
 
 class InvoiceCreateView(NummiCreateView):
@@ -147,17 +150,18 @@ class SnapshotCreateView(NummiCreateView):
     form_class = SnapshotForm
     template_name = "main/form/snapshot.html"
 
-    def get_form_kwargs(self):
-        return super().get_form_kwargs() | {
-            "initial": {
-                "account": (
-                    self.kwargs.get("account")
-                    or Account.objects.filter(user=self.request.user)
-                    .order_by("-default")
-                    .first()
-                ),
-            },
-        }
+    def get_initial(self):
+        _queryset = Account.objects.filter(user=self.request.user)
+        if "account" in self.kwargs:
+            self.account = get_object_or_404(_queryset, pk=self.kwargs["account"])
+        else:
+            self.account = _queryset.first()
+        return {"account": self.account}
+
+    def get_context_data(self, **kwargs):
+        if "account" in self.kwargs:
+            return super().get_context_data(**kwargs) | {"account": self.account}
+        return super().get_context_data(**kwargs)
 
 
 class AccountUpdateView(NummiUpdateView):