class PostgreSQLAdapter

Ruby on Rails 2.3.18

Since v2.2.3

Compare with:

The PostgreSQL adapter works both with the native C (ruby.scripting.ca/postgres/) and the pure Ruby (available both as gem and from rubyforge.org/frs/?group_id=234&release_id=1944) drivers.

Options:

:host - Defaults to “localhost”.
:port - Defaults to 5432.
:username - Defaults to nothing.
:password - Defaults to nothing.
:database - The name of the database. No default, must be provided.
:schema_search_path - An optional schema search path for the connection given as a string of comma-separated schema names. This is backward-compatible with the :schema_order option.
:encoding - An optional client encoding that is used in a SET client_encoding TO <encoding> call on the connection.
:min_messages - An optional client min messages that is used in a SET client_min_messages TO <min_messages> call on the connection.
:allow_concurrency - If true, use async query methods so Ruby threads don’t deadlock; otherwise, use blocking query methods.