confirm before restoring changes

src/c3nav/editor/templates/editor/changeset_restore_confirm.html

@@ -0,0 +1,19 @@
+{% load bootstrap3 %}
+{% load i18n %}
+
+{% include 'editor/fragment_modal_close.html' %}
+<h3>{% trans 'Restore original state' %}</h3>
+<form action="{{ request.path }}" method="post">
+    {% csrf_token %}
+    <p>{% trans 'Do you really want to restore the original state before this change?' %}</p>
+    <input type="hidden" name="restore" value="{{ pk }}">
+    {% buttons %}
+    <button class="invisiblesubmit" type="submit"></button>
+    <a class="btn btn-default" href="{{ request.path }}">
+        {% trans 'Cancel' %}
+    </a>
+    <button type="submit" name="restore_confirm" value="1" class="btn btn-primary pull-right">
+        {% trans 'Restore' %}
+    </button>
+    {% endbuttons %}
+</form>

src/c3nav/editor/views/changes.py

@@ -29,6 +29,8 @@ def changeset_detail(request, pk, show_history=False):
         if restore.isdigit():
             change = changeset.changes.filter(pk=restore).first()
             if change is not None and change.can_restore:
+                if request.POST.get('restore_confirm') != '1':
+                    return render(request, 'editor/changeset_restore_confirm.html', {'pk': change.pk})
                 change.restore(request.user if request.user.is_authenticated else None)
                 messages.success(request, _('Original state has been restored!'))
         return redirect(request.path)