From: patrick-may@... (Patrick May)
Date: 2002-05-13T18:19:09+09:00
Subject: Re: cgi params api

Wakou Aoyama <wakou@fsinet.or.jp> wrote in message news:<20020512175956.GA12329%wakou@fsinet.or.jp>...
> Hi,
> 
> > cgi["name"]       # => "value"
> > cgi["name"].to_a  # => ["value"]
>  
> > cgi["name"]       # => "value1\0value2\0value3\0"
> > cgi["name"].to_a  # => ["value1", "value2", "value3"]

cgi["name"].values is better than cgi["name"].to_a, because of the
conflict with Enumerable in String.

> cgi["name"].size   # how many values (1,2,3... or 0,1,2...)
> 
> These mean the next thing.
> 
> if 2 <= cgi["name"].size   # or, if 1 <= cgi["name"].size
>   cgi["name"].each() do |value|
>     foo(value)
>   end
> else
>   foo(cgi["name"])
> end

With cgi["name"].values, cgi["name"].size is not needed:

# process a <select multiple>
cgi["name"].values.each do |value|
    foo(value)
end

works for one or more values.



Also, cgi["name"].size conflicts within aString.size:

# query string: "key=value"

"key".size == "key".length #  => true
cgi["key"].size = ?????    #  => "key".size, or ["key"].size ? 

~ Patrick