Update link visibility depending on item number in table

nummi/main/templates/main/account_form.html

@@ -19,7 +19,7 @@
         {% csrf_token %}
         {{ form }}
     </form>
-    {% if snapshots %}
+    {% if not form.instance.adding %}
         <h2>{% translate "Statements" %}</h2>
         {% include "main/table/snapshot.html" %}
     {% endif %}

nummi/main/templates/main/snapshot_form.html

@@ -71,7 +71,7 @@
                 {% endfor %}
             </div>
         {% endif %}
-        {% if snapshot.transaction_set.all %}
+        {% if not snapshot.adding %}
             <h2>{% translate "Transactions" %} ({{ snapshot.sum|pmvalue }} / {{ snapshot.diff|pmvalue }})</h2>
             {% include "main/table/transaction.html" %}
         {% endif %}

nummi/main/views.py

@@ -134,18 +134,27 @@ class AccountUpdateView(NummiUpdateView):
     form_class = AccountForm
 
     def get_context_data(self, **kwargs):
+        _max = 8
         data = super().get_context_data(**kwargs)
         account = data["form"].instance
-        return data | {
+
-            "transactions": account.transaction_set.all()[:8],
+        _transactions = account.transaction_set.all()
-            "transactions_url": reverse_lazy(
+        if _transactions.count() > _max:
+            data["transactions_url"] = reverse_lazy(
                 "account_transactions", args=(account.pk,)
-            ),
+            )
+        _snapshots = account.snapshot_set.all()
+        if _snapshots.count() > _max:
+            data["snapshots_url"] = reverse_lazy(
+                "account_snapshots", args=(account.pk,)
+            )
+
+        return data | {
+            "transactions": _transactions[:8],
             "new_snapshot_url": reverse_lazy(
                 "snapshot", kwargs={"account": account.pk}
             ),
-            "snapshots": account.snapshot_set.all()[:8],
+            "snapshots": _snapshots[:8],
-            "snapshots_url": reverse_lazy("account_snapshots", args=(account.pk,)),
         }
 
 
@@ -193,16 +202,21 @@ class SnapshotUpdateView(NummiUpdateView):
     form_class = SnapshotForm
 
     def get_context_data(self, **kwargs):
+        _max = 8
         data = super().get_context_data(**kwargs)
         snapshot = data["form"].instance
+
+        _transactions = snapshot.transaction_set.all()
+        if _transactions.count() > _max:
+            data["transactions_url"] = reverse_lazy(
+                "snapshot_transactions", args=(snapshot.pk,)
+            )
+
         return data | {
             "new_transaction_url": reverse_lazy(
                 "transaction", kwargs={"snapshot": snapshot.pk}
             ),
-            "transactions": snapshot.transaction_set.all()[:8],
+            "transactions": _transactions[:_max],
-            "transactions_url": reverse_lazy(
-                "snapshot_transactions", args=(snapshot.pk,)
-            ),
         }