Fix interface error when downloading taxa list (#4131)

bims/database_backend/base.py

@@ -0,0 +1,15 @@
+import django.db
+from psycopg2 import InterfaceError
+from django_tenants.postgresql_backend.base import (
+ DatabaseWrapper as TenantDatabaseWrapper
+)
+
+
+class DatabaseWrapper(TenantDatabaseWrapper):
+ def create_cursor(self, name=None):
+ try:
+ return super().create_cursor(name=name)
+ except InterfaceError:
+ django.db.close_old_connections()
+ django.db.connection.connect()
+ return super().create_cursor(name=name)

core/settings/contrib.py

@@ -260,10 +260,6 @@
  absolute_path('pesticide', 'static'),
 ]
 
-MIDDLEWARE += (
- 'bims.middleware.VisitorTrackingMiddleware',
-)
-
 # for middleware in MIDDLEWARE_CLASSES:
 # if middleware not in MIDDLEWARE:
 # MIDDLEWARE += (middleware,)

core/settings/dev_docker.py

@@ -21,7 +21,7 @@
 
 DATABASES = {
  'default': {
- 'ENGINE': 'django_tenants.postgresql_backend',
+ 'ENGINE': 'bims.database_backend',
  'NAME': 'gis',
  'USER': 'docker',
  'PASSWORD': 'docker',

core/settings/prod_docker.py

@@ -17,7 +17,7 @@
 
 DATABASES = {
  'default': {
- 'ENGINE': 'django_tenants.postgresql_backend',
+ 'ENGINE': 'bims.database_backend',
  'NAME': os.environ.get('DATABASE_NAME'),
  'USER': os.environ.get('DATABASE_USERNAME'),
  'PASSWORD': os.environ.get('DATABASE_PASSWORD'),