save graph editing settings

src/c3nav/editor/templates/editor/graph.html

@@ -17,7 +17,7 @@
     </small>
 </h3>
 
-<a href="{% url 'editor.graph.settings' %}" class="btn btn-default btn-xs pull-right">{% trans 'Settings' %}</a>
+<a href="{% url 'editor.graph.settings' %}" class="btn btn-default btn-xs pull-right" data-graph-editing-settings="{{ graph_editing_settings }}">{% trans 'Settings' %}</a>
 <p>
     <a href="{{ back_url }}">&laquo; {{ back_title }}</a>
 </p>

src/c3nav/editor/views/edit.py

@@ -1,3 +1,4 @@
+import json
 import typing
 from contextlib import suppress
 
@@ -368,10 +369,14 @@ def graph_edit(request, level=None, space=None):
             'geometry_url': '/api/editor/geometries/?space='+str(space.pk),
         })
 
+    graph_editing_settings = {field.name: field.initial for field in GraphEditorSettingsForm()}
+    graph_editing_settings.update(request.session.get('graph_editing_settings', {}))
+
     ctx.update({
         'node_form': GraphNode.EditorForm(request=request),
         'edge_form': GraphEdge.EditorForm(request=request),
         'settings_form': GraphEditorSettingsForm(),
+        'graph_editing_settings': json.dumps(graph_editing_settings, separators=(',', ':'))
     })
 
     return render(request, 'editor/graph.html', ctx)
@@ -386,10 +391,11 @@ def graph_editing_settings(request):
         form = GraphEditorSettingsForm(data=request.POST)
         if form.is_valid():
             messages.success(request, _('Graph Editing Settings were successfully saved.'))
-        if request.POST.get('can_close_modal') == '1':
-            ctx['closemodal'] = True
+            request.session['graph_editing_settings'] = form.cleaned_data
+            if request.POST.get('can_close_modal') == '1':
+                ctx['closemodal'] = True
     else:
-        form = GraphEditorSettingsForm()
+        form = GraphEditorSettingsForm(data=request.session.get('graph_editing_settings', {}))
 
     ctx.update({
         'form': form,