Индикатор выполнения Django для бэкэнда для последующей интеграции с фронтендом ⇐ Python

[Anonymous]

Я хочу реализовать индикатор выполнения, поскольку запросу требуется некоторое время, чтобы выдать ответ
при вызове запроса API, я хочу, чтобы индикатор выполнения начинался с 0 до 100 при загрузке ответа
views.py:
класс AllNodeReportView(View):

Код: Выделить всё

def get(self, request, *args, **kwargs):
start_date = request.GET.get('start')
end_date = request.GET.get('end')
format_type = request.GET.get('format', 'json')

try:
start_datetime = datetime.strptime(start_date, '%Y-%m-%d')
end_datetime = datetime.strptime(end_date, '%Y-%m-%d') + timedelta(days=1)
except ValueError:
return JsonResponse({"error": "Invalid date format.  Use 'YYYY-MM-DD'."}, status=400)

nodes = Node.objects.only('mac', 'location', 'unicast')

response_data = []
node_unicasts = nodes.values_list('unicast', flat=True)

loc_tag_relations = LocTagRelation.objects.filter(
unicastAddr__in=node_unicasts,
uuid__gte=start_datetime.timestamp(),
uuid__lt=end_datetime.timestamp()
).values('unicastAddr', 'tagMac').annotate(
intime=Min('uuid'),
outtime=Max('uuid')
).order_by('tagMac', 'intime')

loc_tag_relation_map = {}
for relation in loc_tag_relations:
if relation['unicastAddr'] not in loc_tag_relation_map:
loc_tag_relation_map[relation['unicastAddr']] = []
loc_tag_relation_map[relation['unicastAddr']].append(relation)

tag_macs = [relation['tagMac'] for relation in loc_tag_relations]
tag_data = TagHistory.objects.filter(
mac__in=tag_macs,
lastUpdated__gte=start_datetime.timestamp(),
lastUpdated__lt=end_datetime.timestamp()
).order_by('mac', 'lastUpdated')

tag_data_map = {}
for entry in tag_data:
if entry.mac not in tag_data_map:
tag_data_map[entry.mac] = []
tag_data_map[entry.mac].append(entry)

for node in nodes:
if node.unicast in loc_tag_relation_map:
for relation in loc_tag_relation_map[node.unicast]:
tag_mac = relation['tagMac']
if tag_mac in tag_data_map:
tag_entries = tag_data_map[tag_mac]
current_location = None
entry_time = None
entry_date = None  # Capture the actual date of entry
last_exit_time = None
ongoing_entry = None

for tag_entry in tag_entries:
timestamp = datetime.fromtimestamp(float(tag_entry.lastUpdated))
date_str = timestamp.strftime('%Y-%m-%d')
time_str = timestamp.strftime('%I:%M %p')

if current_location is None:
current_location = tag_entry.location
entry_time = time_str
entry_date = date_str  # Set the date when the entry starts
ongoing_entry = True
elif tag_entry.location != current_location:
if ongoing_entry and current_location == node.location:
response_data.append({
'Date': entry_date,  # Use the captured entry date
'NodeMac': node.mac,
'TagMac': tag_mac,
'InTime': entry_time,
'OutTime': last_exit_time,
'Location': current_location
})
current_location = tag_entry.location
entry_time = time_str
entry_date = date_str  # Update the date to the new entry
ongoing_entry = True

last_exit_time = time_str

if ongoing_entry and current_location == node.location:
response_data.append({
'Date': entry_date,  # Ensure the final entry uses the correct date
'NodeMac': node.mac,
'TagMac': tag_mac,
'InTime': entry_time,
'OutTime': last_exit_time,
'Location': current_location
})

if format_type == 'pdf':
return self.generate_pdf(response_data, start_date)
elif format_type == 'csv':
return self.generate_csv(response_data, start_date)
else:
return JsonResponse(response_data, safe=False)

Я хочу интегрировать индикатор выполнения одновременно с запросом API

Подробнее здесь: https://stackoverflow.com/questions/790 ... h-frontend