From: Chris White <cwprogram@...>
Date: 2011-08-11T00:16:10+09:00
Subject: Re: Passing multiple parameters


On Aug 10, 2011, at 8:10 AM, Avantec Van wrote:

> Hi,
> 
>  I have a method & i wanna pass around 25 parameters to it and i hav to
> make string from that, as follows...

I wouldn't recommend writing a method that takes 25 parameters, but moving along...

> 
> def method1(email, b_day, b_month, b_year, gender, f_name, l_name,
> mdl_name, title, country,  .......)
> 
>    params =
> "email=#{email}&birth_day=#{b_day}&birth_year=#{b_year}.............."
> 
> end
> 
> it looks very odd when passing these many parameters. Is there any other
> option that I can mention only mandatory args in the method & remaining
> all are in single argument or something like that?

Yes, you can do this:

def method1(required, required, required, *args)

Which Ruby will fill *args with remaining arguments as an array (empty array if there are none):

>> def test(a,b,*args)
>>   p a,b,args
>> end
=> nil
>> test(1,2,3,4,5)
1
2
[3, 4, 5]

Another option is to pass either an object in, or a Hash. I'd recommend this path if the data you're dealing with relates to each other (which it looks like it does).

Regards,
Chris White
http://www.twitter.com/cwgem