Merge remote branch 'rails/master' into identity_map

Conflicts:
	activerecord/examples/performance.rb
	activerecord/lib/active_record/association_preload.rb
	activerecord/lib/active_record/associations.rb
	activerecord/lib/active_record/associations/association_proxy.rb
	activerecord/lib/active_record/autosave_association.rb
	activerecord/lib/active_record/base.rb
	activerecord/lib/active_record/nested_attributes.rb
	activerecord/test/cases/relations_test.rb

1 files changed, 8 insertions, 2 deletions

diff --git a/railties/lib/rails/commands/dbconsole.rb b/railties/lib/rails/commands/dbconsole.rb
index 14d245ab2e..f0d6ea1687 100644
--- a/railties/lib/rails/commands/dbconsole.rb
+++ b/railties/lib/rails/commands/dbconsole.rb
@@ -1,4 +1,10 @@
 require 'erb'
+
+begin
+  require 'psych'
+rescue LoadError
+end
+
 require 'yaml'
 require 'optparse'
 require 'rbconfig'
@@ -74,7 +80,7 @@ module Rails
 
         exec(find_cmd('mysql', 'mysql5'), *args)
 
-      when "postgresql"
+      when "postgresql", "postgres"
         ENV['PGUSER']     = config["username"] if config["username"]
         ENV['PGHOST']     = config["host"] if config["host"]
         ENV['PGPORT']     = config["port"].to_s if config["port"]
@@ -113,5 +119,5 @@ end
 
 # Has to set the RAILS_ENV before config/application is required
 if ARGV.first && !ARGV.first.index("-") && env = ARGV.first
-  ENV['RAILS_ENV'] = %w(production development test).find { |e| e.index(env) } || env
+  ENV['RAILS_ENV'] = %w(production development test).detect {|e| e =~ /^#{env}/} || env
 end