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Miscellaneous query optimizations

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This commit is contained in:
Jeremy Stretch
2016-08-10 13:07:11 -04:00
parent ed03449164
commit cbde6e8321
2 changed files with 11 additions and 9 deletions
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12
netbox/dcim/views.py
View File

@@ -8,6 +8,7 @@ from django.contrib.auth.mixins import PermissionRequiredMixin
from django.core.exceptions import ValidationError
from django.core.urlresolvers import reverse
from django.db.models import Count, Sum
from django.db.models.functions import Coalesce
from django.http import HttpResponseRedirect
from django.shortcuts import get_object_or_404, redirect, render
from django.utils.http import urlencode
@@ -137,7 +138,7 @@ class SiteBulkEditView(PermissionRequiredMixin, BulkEditView):
#
class RackGroupListView(ObjectListView):
queryset = RackGroup.objects.annotate(rack_count=Count('racks'))
queryset = RackGroup.objects.select_related('site').annotate(rack_count=Count('racks'))
filter = filters.RackGroupFilter
filter_form = forms.RackGroupFilterForm
table = tables.RackGroupTable
@@ -188,8 +189,9 @@ class RackRoleBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
#
class RackListView(ObjectListView):
queryset = Rack.objects.select_related('site').prefetch_related('devices__device_type')\
.annotate(device_count=Count('devices', distinct=True), u_consumed=Sum('devices__device_type__u_height'))
queryset = Rack.objects.select_related('site', 'group', 'tenant', 'role').prefetch_related('devices__device_type')\
.annotate(device_count=Count('devices', distinct=True),
u_consumed=Coalesce(Sum('devices__device_type__u_height'), 0))
filter = filters.RackFilter
filter_form = forms.RackFilterForm
table = tables.RackTable
@@ -559,8 +561,8 @@ class PlatformBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
#
class DeviceListView(ObjectListView):
queryset = Device.objects.select_related('device_type__manufacturer', 'device_role', 'rack__site', 'primary_ip4',
'primary_ip6')
queryset = Device.objects.select_related('device_type__manufacturer', 'device_role', 'tenant', 'rack__site',
'primary_ip4', 'primary_ip6')
filter = filters.DeviceFilter
filter_form = forms.DeviceFilterForm
table = tables.DeviceTable