request: hide lease request button if no lease types are present

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

@@ -8,11 +8,13 @@
   <a class="btn btn-default" href="{{object.get_absolute_url}}" data-dismiss="modal">
     {% trans "Cancel" %}
   </a>
+  {% if lease_types %}
   <a class="btn btn-primary" id="vm-renew-request-lease-button"
    href="{% url "request.views.request-lease" vm_pk=object.pk %}">
     <i class="fa fa-forward"></i>
     {% trans "Request longer lease" %}
   </a>
+  {% endif %}
   <button class="btn btn-{{ opview.effect }} btn-op-form-send" type="submit" id="op-form-send">
     {% if opview.icon %}<i class="fa fa-fw fa-{{opview.icon}}"></i> {% endif %}{{ op.name|capfirst }}
   </button>

circle/dashboard/views/vm.py

@@ -66,7 +66,7 @@ from ..forms import (
     VmPortRemoveForm, VmPortAddForm,
     VmRemoveInterfaceForm,
 )
-from request.models import TemplateAccessType
+from request.models import TemplateAccessType, LeaseType
 from request.forms import LeaseRequestForm, TemplateRequestForm
 from ..models import Favourite
 from manager.scheduler import has_traits
@@ -681,6 +681,7 @@ class VmRenewView(FormOperationMixin, TokenOperationView, VmOperationView):
     def get_context_data(self, **kwargs):
         context = super(VmRenewView, self).get_context_data(**kwargs)
         context['lease_request_form'] = LeaseRequestForm(request=self.request)
+        context['lease_types'] = LeaseType.objects.exists()
         return context