database_apps_mapping = {
# example:
# 'app_name':'database_name',
# 'admin': 'default',
# 'users': 'default', #django
'basic_estate': 'basic_estate',
'footstone': 'footstone',
'mall': 'hsmall',
'iot_biz': 'iot_biz',
'mall': 'mall',
'hsuser': 'hsuser',
}

# -*- coding: utf-8 -*-
"""
@author: obaby
@license: (c) copyright 2013-2020, obaby@mars.
@contact: root@obaby.org.cn
@link: http://www.51sjk.com/Upload/Articles/1/0/261/261927_20210702001929799.cn
  http://www.51sjk.com/Upload/Articles/1/0/261/261927_20210702001929815.cn
  http://www.51sjk.com/Upload/Articles/1/0/261/261927_20210702001929815.co
@file: atabase_router.py.py
@time: 2021/2/26 9:07
@desc:
"""
from django.conf import settings
 
database_mapping = settings.database_apps_mapping
 
 
class databaseappsrouter(object):
 """
 a router to control all database operations on models for different
 databases.
 
 in case an app is not set in settings.database_apps_mapping, the router
 will fallback to the `default` database.
 
 settings example:
 
 database_apps_mapping = {'app1': 'db1', 'app2': 'db2'}
 """
 
 def db_for_read(self, model, **hints):
  """"point all read operations to the specific database."""
  if model._meta.app_label in database_mapping:
   return database_mapping[model._meta.app_label]
  return 'default'
 
 def db_for_write(self, model, **hints):
  """point all write operations to the specific database."""
  if model._meta.app_label in database_mapping:
   return database_mapping[model._meta.app_label]
  return 'default'
 
 def allow_relation(self, obj1, obj2, **hints):
  """allow any relation between apps that use the same database."""
  db_obj1 = database_mapping.get(obj1._meta.app_label)
  db_obj2 = database_mapping.get(obj2._meta.app_label)
  if db_obj1 and db_obj2:
   if db_obj1 == db_obj2:
    return true
   else:
    return false
  return none
 
 def allow_syncdb(self, db, model):
  """make sure that apps only appear in the related database."""
 
  if db in database_mapping.values():
   return database_mapping.get(model._meta.app_label) == db
  elif model._meta.app_label in database_mapping:
   return false
  return none
 
 def allow_migrate(self, db, app_label, model=none, **hints):
  """
  make sure the auth app only appears in the 'auth_db'
  database.
  """
  if db in database_mapping.values():
   return database_mapping.get(app_label) == db
  elif app_label in database_mapping:
   return false
  return none