From: Nanyang Zhan <sxain@...>
Date: 2007-05-07T16:22:45+09:00
Subject: Re: passing by value of object of a model

arjun ghosh wrote:
> Hi,
> can anyone tell me - is it possible to pass a string name equivalent of 
> a
> model name(example:- have a model called food_dept and i am passing the
> string "food_dept" to a method) and then covert(or cast) it to its 
> original
> model equivalent so that i can use its object in the called method. and 
> why
> i am i trying to this manner is because i want to avoid passing an 
> object
> which will make it very heavy. i think there should be some better 
> elegant
> manner of doing this. can any one help me with this?
> ciao
> -AG

I know how to do it for RoR.
If food_dept is a model(class) name,shouldn't it be FoodDept?
if so, you can use this:
"food_dept".camelize.constantize

if you mean it's a method, use this:
send("food_dept")

>> class Foo
>> def bar
>> "test"
>> end
>> end
=> nil
>> a="foo"
=> "foo"
>> b="bar"
=> "bar"
>> c = a.camelize.constantize.new
=> #<Foo:0xb76cfa80>
>> c.send(b)
=> "test"

but sadly, it seems this wouldn't work for ruby.



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