Rails - Aug 2006 - establish_connection method

I''m digging into rails source code.
But I''ve got a problem in undestading actionrecord::base source code
which is connection_specification.rb.

In the body of establish_connection method,

    def self.establish_connection(spec = nil)
      case spec
        when nil
          raise AdapterNotSpecified unless defined? RAILS_ENV
          establish_connection(RAILS_ENV)
        when ConnectionSpecification
          clear_active_connection_name
          @active_connection_name = name
          @@defined_connections[name] = spec
        when Symbol, String
          if configuration = configurations[spec.to_s]
            establish_connection(configuration)
          else
            raise AdapterNotSpecified, "#{spec} database is not 
configured"
          end
        else
          spec = spec.symbolize_keys
          unless spec.key?(:adapter) then raise AdapterNotSpecified, 
"database configuration does not specify adapter" end
          adapter_method = "#{spec[:adapter]}_connection"
          unless respond_to?(adapter_method) then raise AdapterNotFound, 
"database configuration specifies nonexistent #{spec[:adapter]}
adapter"
end
          remove_connection
          establish_connection(ConnectionSpecification.new(spec, 
adapter_method))
      end
    end

there is case statement.
when spec is ConnectionSpecification, @active_connection_name is set by 
name.

But I couldn''t find what the hack is ''name''
variable..

Do you have any idea or where is that variable set?

Thanks in advance..

-- 
Posted via http://www.ruby-forum.com/.

On Aug 13, 2006, at 11:50 AM, eskim wrote:
> I''m digging into rails source code.
> But I''ve got a problem in undestading actionrecord::base source
code
> which is connection_specification.rb.
>
> In the body of establish_connection method,
>
>     def self.establish_connection(spec = nil)
>       case spec
>         when nil
>           raise AdapterNotSpecified unless defined? RAILS_ENV
>           establish_connection(RAILS_ENV)
>         when ConnectionSpecification
>           clear_active_connection_name
>           @active_connection_name = name
>           @@defined_connections[name] = spec
>         when Symbol, String
>           if configuration = configurations[spec.to_s]
>             establish_connection(configuration)
>           else
>             raise AdapterNotSpecified, "#{spec} database is not
> configured"
>           end
>         else
>           spec = spec.symbolize_keys
>           unless spec.key?(:adapter) then raise AdapterNotSpecified,
> "database configuration does not specify adapter" end
>           adapter_method = "#{spec[:adapter]}_connection"
>           unless respond_to?(adapter_method) then raise  
> AdapterNotFound,
> "database configuration specifies nonexistent #{spec[:adapter]}  
> adapter"
> end
>           remove_connection
>           establish_connection(ConnectionSpecification.new(spec,
> adapter_method))
>       end
>     end
>
> there is case statement.
> when spec is ConnectionSpecification, @active_connection_name is  
> set by
> name.
>
> But I couldn''t find what the hack is ''name''
variable..
>
> Do you have any idea or where is that variable set?
>
> Thanks in advance..
self.name.  Name of the class.

--
Chris Wanstrath
http://errtheblog.com