Try to figure out which mysql socket to use. Default to /path/to/your/mysql.sock

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2645 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

railties/CHANGELOG

 *SVN*
 
+* The rails command tries to deduce your MySQL socket by running `mysql_config
+--socket`.  If it fails, default to /path/to/your/mysql.sock
+
 * Made the rails command use the application name for database names in the tailored database.yml file. Example: "rails ~/projects/blog" will use "blog_development" instead of "rails_development". [Florian Weber]
 
 * Added Rails framework freezing tasks: freeze_gems (freeze to current gems), freeze_edge (freeze to Rails SVN trunk), unfreeze_rails (float with newest gems on system)

railties/configs/database.yml

 development:
   adapter: mysql
   database: <%= app_name %>_development
-  host: localhost
+  socket: <%= socket %>
   username: root
   password:
   # With the MySQL adapter on localhost, it defaults to /tmp/mysql.sock
@@ -13,13 +13,13 @@ development:
 test:
   adapter: mysql
   database: <%= app_name %>_test
-  host: localhost
+  socket: <%= socket %>
   username: root
   password:
 
 production:
   adapter: mysql
   database: <%= app_name %>_production
-  host: localhost
+  socket: <%= socket %>
   username: root
   password: 

railties/lib/rails_generator/generators/applications/app/app_generator.rb

@@ -11,6 +11,8 @@ def initialize(runtime_args, runtime_options = {})
     super
     usage if args.empty?
     @destination_root = args.shift
+    @socket = `mysql_config --socket`.strip
+    @socket = '/path/to/your/mysql.sock' if @socket.blank?
   end
 
   def manifest
@@ -32,7 +34,10 @@ def manifest
       m.template "helpers/test_helper.rb",        "test/test_helper.rb"
 
       # database.yml and .htaccess
-      m.template "configs/database.yml", "config/database.yml", :assigns => { :app_name => File.basename(File.expand_path(@destination_root)) }
+      m.template "configs/database.yml", "config/database.yml", :assigns => {
+        :app_name => File.basename(File.expand_path(@destination_root)),
+        :socket => @socket
+      }
       m.template "configs/routes.rb",    "config/routes.rb"
       m.template "configs/apache.conf",  "public/.htaccess"