The PostgreSQL adapter works both with the native C (http://ruby.scripting.ca/postgres/) and the pure Ruby (available both as gem and from http://rubyforge.org/frs/?group_id=234&release_id=1944) drivers.
Options:
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:host - Defaults to “localhost”.
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:port - Defaults to 5432.
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:username - Defaults to nothing.
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:password - Defaults to nothing.
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:database - The name of the database. No default, must be provided.
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: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.
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:encoding - An optional client encoding that is used in a SET client_encoding TO <encoding> call on the connection.
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:min_messages - An optional client min messages that is used in a SET client_min_messages TO <min_messages> call on the connection.
Constants
ADAPTER_NAME = 'PostgreSQL'
NATIVE_DATABASE_TYPES = { :primary_key => "serial primary key", :string => { :name => "character varying", :limit => 255 }, :text => { :name => "text" }, :integer => { :name => "integer" }, :float => { :name => "float" }, :decimal => { :name => "decimal" }, :datetime => { :name => "timestamp" }, :timestamp => { :name => "timestamp" }, :time => { :name => "time" }, :date => { :name => "date" }, :binary => { :name => "bytea" }, :boolean => { :name => "boolean" }, :xml => { :name => "xml" }, :tsvector => { :name => "tsvector" } }
MONEY_COLUMN_TYPE_OID = 790
BYTEA_COLUMN_TYPE_OID = 17