review comments

Author: yogeshmahajan-1903

web/migrations/versions/320114f59d9c_.py

@@ -27,8 +27,9 @@
 
 
 def upgrade():
-    op.add_column('server', sa.Column('db_alias', sa.String(length=256)))
-
+    with op.batch_alter_table(
+            "server", table_kwargs={'sqlite_autoincrement': True}) as batch_op:
+        batch_op.add_column(sa.Column('db_alias', sa.String(length=256), nullable=True))
 
 def downgrade():
     # pgAdmin only upgrades, downgrade not implemented.

web/pgadmin/browser/server_groups/servers/__init__.py

@@ -768,7 +768,7 @@ def update(self, gid, sid):
             'name': gettext('name'),
             'port': gettext('Port'),
             'db': gettext('Maintenance database'),
-            'db_alias': gettext('Database Alias '),
+            'db_alias': gettext('Database Alias'),
             'username': gettext('Username'),
             'comment': gettext('Comments'),
             'role': gettext('Role')

web/pgadmin/browser/server_groups/servers/static/js/server.ui.js

@@ -326,6 +326,7 @@ export default class ServerSchema extends BaseUISchema {
         disabled: function(state) {
           return !isEmptyString(state.db);
         },
+        helpMessage: gettext('Specify the database alias to connect to the server using pg_bouncer.')
       },{
         id: 'username', label: gettext('Username'), type: 'text', group: gettext('Connection'),
         mode: ['properties', 'edit', 'create'],