dashboard: remove unused form helper

circle/dashboard/forms.py

@@ -765,12 +765,6 @@ class VmMigrateForm(forms.Form):
             queryset=choices, initial=default, required=False,
             widget=forms.RadioSelect(), label=_("Node")))
 
-    @property
-    def helper(self):
-        helper = FormHelper(self)
-        helper.form_tag = False
-        return helper
-
 
 class VmStateChangeForm(forms.Form):
 

circle/dashboard/templates/dashboard/_vm-migrate.html

@@ -14,7 +14,7 @@ Choose a compute node to migrate {{obj}} to.
 
 {% block formfields %}
   <ul id="vm-migrate-node-list" class="list-unstyled">
-  {% with current=object.node.pk recommended=form.fields.to_node.initial %}
+  {% with current=object.node.pk recommended=form.fields.to_node.initial.pk %}
     {% for n in form.fields.to_node.queryset.all %}
       <li class="panel panel-default"><div class="panel-body">
         <label for="migrate-to-{{n.pk}}">

circle/dashboard/views/vm.py

@@ -437,7 +437,7 @@ class VmMigrateView(FormOperationMixin, VmOperationView):
         inst = self.get_object()
         try:
             if isinstance(inst, Instance):
-                default = inst.select_node().pk
+                default = inst.select_node()
         except SchedulerError:
             logger.exception("scheduler error:")