DBIx::Class and Postgres tweaks at startup

After connection you can do simple commands thanks to the on_connect_do connection setting. One thing I sometimes do is turn down the whining. Postgres can be quite noisy when you’re creating tables,

NOTICE:  CREATE TABLE / PRIMARY KEY will create implicit index "blah_pkey" for table "blah"
NOTICE:  CREATE TABLE will create implicit sequence "blah_id_seq" for serial column "blah.id"
...

So I sometimes SET client_min_messages=WARNING at connection. That makes deploying a schema a lot less verbal.

If you want to deploy to a different schema within a database you can also do a ‘SET search_path TO’ statement at that point too. That can be quite handy if you want to deploy the same tables again to an alternative schema within a database.

perl -I lib -MMyModule::Schema::DB -e "MyModule::Schema::DB->connect('dbi:Pg:dbname=database;host=postgres', 'username', 'password', { on_connect_do => 'SET search_path TO temp' })->deploy"

If you’re setting up a Catalyst config for DBIC you can set the connection options like this,

<Model::MyDB>
    connect_info dbi:Pg:dbname=database
    connect_info username
    connect_info password
    <connect_info>
        on_connect_do  [ SET client_min_messages=WARNING ]
        quote_names 1
...