views.py

# views.py
from horizon import views
from horizon import exceptions
from horizon import tabs
from tables import InstanceTable,PackagesForUpgradeTable
from horizon import tables, exceptions

from django.utils.translation import ugettext_lazy as _


from openstack_dashboard.api.salt_api import minions_list_custom,pkg_list_for_upgrade

class IndexView(tables.DataTableView):
    # A very simple class-based view...

    template_name = 'patch_management/instances/index.html'
    table_class = InstanceTable

    def get_data(self):
        # Add data to the context here...

        minions = []

        try:

            minions = minions_list_custom()

        except exceptions.NotAvailable:

            exceptions.handle(self.request,_('Unable to connect to Salt-master:'))

        return minions


class PackagesToUpgradeView(tables.DataTableView):
    template_name = 'patch_management/instances/packages_index.html'
    page_title = _("Packages available to upgrade on {{ instance.id }}")

    table_class = PackagesForUpgradeTable

    def get_data(self):
        try:
            instance_id = self.kwargs['instance_id']
            pkgs_list = pkg_list_for_upgrade(instance_name=instance_id)
        except Exception:
            redirect = self.get_redirect_url()
            exceptions.handle(self.request,
                              _('Unable to retrieve packages to upgrade'),
                              redirect=redirect)
        return pkgs_list

    def get_redirect_url(self):
        # we may ignore this function because it is never running
        return reverse('horizon:patch_management:index')