From: Li Chen <chen_li3@...>
Date: 2008-09-27T02:13:48+09:00
Subject: Re: How to iterate of the attributes of an object?

Rich Sturim wrote:
> I need to build a string of all populated attributes of a given object.
> 
> I need to get the attribute name and it's value
> 
> Also,the object may have 10 attributes, but I'm only interested in the
> attribute that are not nil.
> 
> 
> 
> here's a sample object:
> foo = Foo.new(:bar => 'baz', :bar2 => 'baz2', :bar3 => 'baz3')
> 
> 
> ultimately what I want is this as a string like this:
>  ":bar => 'baz', :bar2 => 'baz2', :bar3 => 'baz3'"
> 
> code should be something like this? (sorry I'm a newbie)
> 
>    s = ""
> 
>    foo.instance_values.each  do |v|
>       s += ":#{v.name} => #{v.value}"
>    end
> 
>    s.split(",")


C:\Documents and Settings\chen73>irb
irb(main):001:0> foo = {:bar => 'baz', :bar2 => 'baz2', :bar3 => 'baz3'}
=> {:bar3=>"baz3", :bar=>"baz", :bar2=>"baz2"}
irb(main):002:0> foo.each{|k,v| puts "#{k} "+"=>"+"#{v}" }
bar3 =>baz3
bar =>baz
bar2 =>baz2
=> {:bar3=>"baz3", :bar=>"baz", :bar2=>"baz2"}

Li

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