Elan,
Thanks for the explanation about the use of "make object!" in the context of
managing CGI GET and POSTs. It does help me to understand why it was used,
and it also gives me a better strategy for managing data sets in the future.
--Scott
Elan wrote:
> Hi GS Jones,
>
> I didn't read your message as containing anything negative.
>
> In the version I'm using on the Website I use the make object! in the
> calling function instead of in the retrieve-user-data function. That's
> incidental.
>
> The reason for make object! is:
>
> decode-cgi returns a block that contains set-word! value pairs:
>
> [name: "some-name" phone: "some-phone"]
>
> To conveniently retrieve the values by using a path notation,
> result/name result/phone I use the block returned by decode-cgi to
> construct an object:
>
> result: make object! decode-cgi input
>
> If I were to simply say
>
> result: decode-cgi input
>
> then I wouldn't be able to access the values in the block using the path
> notation in combination with the names: result/name wouldn't work
> because in the block name appears as name:
>
> result/name: wouldn't work because upon parsing a set-word as the last
> element of a path REBOL expects that you are changing the value
> following the word name and I would get an error reporting that the
> value being assigned to result/name: is missing.
>
> The one option would be to reduce the block returned by decode-cgi. Then
> name and phone will become global words that are associated with their
> respective values. I prefer to work with words that are local to the
> object's context to avoic conflicts with other words that may be in use.
>
> Hope this helps,
>
> Elan
>
> GS Jones wrote:
> >
> > No problem, Elan, and I certainly didn't mean to imply anything
negative.
> > Being new to the language, I just was "wondering out loud" that perhaps
a
> > change in the version of REBOL required a change in the method. Through
no
> > one's fault but my own, I am unclear why a "make object!" is needed.
> > Obviously, your site's version works both on your system and mine (at
least
> > when I am using /View), but not on Ryan's. And Ryan says that his works
> > with the "make object!" phrase left in, but only with GET. When I use
his
> > version, all I get is "?object?" printed for the data. As I have said
to
> > Carl R., I probably shouldn't be pitching my two pennies in because I am
> > still a novice with REBOL. But I like mysteries and solving them helps
me
> > learn the language more quickly.
> >
> > Thanks for your input.
> > --- Scott (The "S" in GS Jones)
> >
> > > Hi GS Jones
> > > [...]
> > > > left out the "make object!" phrase.
> > > [...]
> > >
> > > I didn't do that intentionally. I just happened to implement it that
way
> > > when I wrote the code for this Website.
> > >
> > > Elan
...
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