Rails - Jul 2006 - File.open behavior for ActiveRecord, to ensure save after manipulation?

File.open in core Ruby is nifty, in that it automagically closes the
file when you''re done using/manipulating it. I''m wondering
whether
there''s something like that for ActiveRecord?

So you can do:

AR.find(23).open {|ar|
  ar.foo = ''bar''
  ...
}

And ar.save would be called when the block closes.

-- 
-Alder

On Jul 21, 2006, at 3:37 AM, Alder Green wrote:
> File.open in core Ruby is nifty, in that it automagically closes the
> file when you''re done using/manipulating it. I''m
wondering whether
> there''s something like that for ActiveRecord?
>
> So you can do:
>
> AR.find(23).open {|ar|
>  ar.foo = ''bar''
>  ...
> }
>
> And ar.save would be called when the block closes.
>
> -- 
> -Alder
class ActiveRecord::Base

   def self.build_with_block(attributes = nil, &block)
     item = self.new(attributes || {})
     yield item if block_given?
     item.save!
     item
   end

   def modify_with_block(attributes = nil, &block)
     self.attributes = attributes
     yield self if block_given?
     save!
     self
   end

end

Model.build_with_block do |m|
   m.foo = ''bar''
   m.bar = ''foo''
end


Model.find(23).modify_with_block do |m|
   m.foo = ''bizz''
   m.bar = ''fuzz!''
end


Cheers-
-Ezra

On 7/21/06, Ezra Zygmuntowicz <ezmobius@gmail.com>
wrote:
>
> On Jul 21, 2006, at 3:37 AM, Alder Green wrote:
>
> > File.open in core Ruby is nifty, in that it automagically closes the
> > file when you''re done using/manipulating it. I''m
wondering whether
> > there''s something like that for ActiveRecord?
> >
> > So you can do:
> >
> > AR.find(23).open {|ar|
> >  ar.foo = ''bar''
> >  ...
> > }
> >
> > And ar.save would be called when the block closes.
> >
> > --
> > -Alder
>
> class ActiveRecord::Base
>
>    def self.build_with_block(attributes = nil, &block)
>      item = self.new(attributes || {})
>      yield item if block_given?
>      item.save!
>      item
>    end
>
>    def modify_with_block(attributes = nil, &block)
>      self.attributes = attributes
>      yield self if block_given?
>      save!
>      self
>    end
>
> end
>
> Model.build_with_block do |m|
>    m.foo = ''bar''
>    m.bar = ''foo''
> end
>
>
> Model.find(23).modify_with_block do |m|
>    m.foo = ''bizz''
>    m.bar = ''fuzz!''
> end
>
>
> Cheers-
> -Ezra
>
Awesome, thanks!

-- 
-Alder