Я использую 2 базы данных для моего Django проекта, и они находятся в настройках следующим образом:
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'AppDB',
'USER': 'genericpiratename',
'PASSWORD':'pass',
'HOST': 'mypirateapp-postgres.ja6as4d8ss54.ap-south-1.rds.amazonaws.com',
'PORT': '5432',
},
'mongoDB' : {
'ENGINE': 'djongo',
'NAME': 'pirateapp',
'USER': 'uncommonpiratename',
'PASSWORD': 'dbpass',
'HOST': 'mongodb+srv://uncommonpiratename:dbpass@cluster1-8zu5ge.mongodb.net/test',
}
}
Первая база данных - это размещенная база данных PostgreSQL, а вторая также размещенная база данных MongoDB. Я использовал атлас mongodb для размещения кластера и компаса для создания базы данных pirateapp. Я также разрешил доступ к базам данных для обеих баз данных со всех IP-адресов.
Я использовал следующие базы данных для баз данных:
class PrimaryRouter:
def db_for_read(self, model, **hints):
return 'default'
def db_for_write(self, model, **hints):
return 'default'
def allow_relation(self, obj1, obj2, **hints):
db_list = ('default')
if obj1._state.db in db_list and obj2._state.db in db_list:
return True
return None
def allow_migrate(self, db, app_label, model_name=None, **hints):
return True
class DirectionsRouter:
route_app_labels = {'tressureHunter'}
def db_for_read(self, model, **hints):
if model._meta.app_label in self.route_app_labels:
return 'mongoDB'
return None
def db_for_write(self, model, **hints):
if model._meta.app_label in self.route_app_labels:
return 'mongoDB'
return None
def allow_relation(self, obj1, obj2, **hints):
if (
obj1._meta.app_label in self.route_app_labels or
obj2._meta.app_label in self.route_app_labels
):
return True
return None
def allow_migrate(self, db, app_label, model_name=None, **hints):
if app_label in self.route_app_labels:
return db == 'mongoDB'
return None
Я также указал правильный путь к маршрутизаторам в настройках как:
DATABASE_ROUTERS = ['services.dataRouters.PrimaryRouter', 'services.dataRouters.DirectionsRouter']
После этого, когда я делаю python3 manage.py makemigrations, он показывает следующую ошибку:
Traceback (most recent call last):
File "manage.py", line 21, in <module>
main()
File "manage.py", line 17, in main
execute_from_command_line(sys.argv)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/django/core/management/__init__.py", line 401, in execute_from_command_line
utility.execute()
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/django/core/management/__init__.py", line 395, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/django/core/management/base.py", line 328, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/django/core/management/base.py", line 369, in execute
output = self.handle(*args, **options)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/django/core/management/base.py", line 83, in wrapped
res = handle_func(*args, **kwargs)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/django/core/management/commands/makemigrations.py", line 101, in handle
loader.check_consistent_history(connection)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/django/db/migrations/loader.py", line 283, in check_consistent_history
applied = recorder.applied_migrations()
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 76, in applied_migrations
if self.has_table():
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 56, in has_table
return self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor())
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/django/db/backends/base/introspection.py", line 48, in table_names
return get_names(cursor)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/django/db/backends/base/introspection.py", line 43, in get_names
return sorted(ti.name for ti in self.get_table_list(cursor)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/djongo/introspection.py", line 47, in get_table_list
for c in cursor.db_conn.list_collection_names()
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/pymongo/database.py", line 856, in list_collection_names
for result in self.list_collections(session=session, **kwargs)]
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/pymongo/database.py", line 819, in list_collections
_cmd, read_pref, session)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/pymongo/mongo_client.py", line 1454, in _retryable_read
read_pref, session, address=address)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/pymongo/mongo_client.py", line 1253, in _select_server
server = topology.select_server(server_selector)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/pymongo/topology.py", line 235, in select_server
address))
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/pymongo/topology.py", line 193, in select_servers
selector, server_timeout, address)
File "/home/suraj/Work/Speeve/speeve-backend/speeveEnv/lib/python3.6/site-packages/pymongo/topology.py", line 209, in _select_servers_loop
self._error_message(selector))
pymongo.errors.ServerSelectionTimeoutError: localhost:27017: [Errno 111] Connection refused
Я использую Django версию 3.0.3 и Djon go версия двигателя 1.3.1
Пожалуйста, помогите!