Rails - Jan 2005 - OnLAMP Tutorial Question

I''m a Ruby Nuby, so please bear with me....

I''ve been working through the OnLAMP tutorial, and it seems to work
fine, at least for a while.  At some (apparently random) point,
however, the scaffold-provided links seem to stop working.

That is, the New Recipe link from http://127.0.0.1:3000/Recipe/ does
nothing, and the edit or destroy links take me to a Not Found page
with the message  "`/Recipe/1'' not found" (or similar,
depending on
the specific link).

Likewise, http://127.0.0.1:3000/Recipe/new brings up the expected
form, but clicking the Create button won''t add anything to my database
and just refreshes the form.

What''s confounding me is that it will sometimes work correctly, but it
will sometimes revert to the above behavior without my having changed
anything (at least that I''m aware of).

I''m running XP Pro using MySQL and WEBbrick per the tutorial, and
I''ve
tried deleting the cookbook directory and starting over from scratch
several times.  That has worked twice (for a little while, at least),
and failed twice.

Has anyone seen this behavior before?  Is there some fix for it?

Thanks,
Ryan Wells

P.S. If I''m doing something monumentally stupid and obvious, feel free
to respond privately to spare me the public humiliation. ;-)

On Sun, Jan 23, 2005 at 06:37:33PM -0600, Ryan Wells
wrote:
> I''m a Ruby Nuby, so please bear with me....
> 
> I''ve been working through the OnLAMP tutorial, and it seems to
work
> fine, at least for a while.  At some (apparently random) point,
> however, the scaffold-provided links seem to stop working.
> 
> That is, the New Recipe link from http://127.0.0.1:3000/Recipe/ does
> nothing, and the edit or destroy links take me to a Not Found page
> with the message  "`/Recipe/1'' not found" (or similar,
depending on
> the specific link).
> 
> Likewise, http://127.0.0.1:3000/Recipe/new brings up the expected
> form, but clicking the Create button won''t add anything to my
database
> and just refreshes the form.
> 
> What''s confounding me is that it will sometimes work correctly,
but it
> will sometimes revert to the above behavior without my having changed
> anything (at least that I''m aware of).
> 
> I''m running XP Pro using MySQL and WEBbrick per the tutorial, and
I''ve
> tried deleting the cookbook directory and starting over from scratch
> several times.  That has worked twice (for a little while, at least),
> and failed twice.
> 
> Has anyone seen this behavior before?  Is there some fix for it?
> 
> Thanks,
> Ryan Wells
> 
> P.S. If I''m doing something monumentally stupid and obvious, feel
free
> to respond privately to spare me the public humiliation. ;-)
> _______________________________________________
Ryan:

  I''m new to Ruby and Rails too.  Are you running on Linux or on
Windows?  I''m running Linux (SuSE 9.1 pro) and I found that I had to
kill the server and then restart it to be able to see my changes.
There was no mention of that in the article.  

Hope that helps in some way.  I finally got it working and I''m
impressed enough to start learning more about both Ruby and Rails.

Eric

-- 
------------------------------------------------------------------------
#   Eric Lucas 
=======================================================================The
uncreative mind can spot the wrong answers, but it takes a very
creative mind to spot the wrong questions.
  -- Anthony Jay

Ryan Wells wrote:
>
> I''m a Ruby Nuby, so please bear with me....
>
> I''ve been working through the OnLAMP tutorial, and it seems to
work
> fine, at least for a while.  At some (apparently random) point,
> however, the scaffold-provided links seem to stop working.
>
> That is, the New Recipe link from http://127.0.0.1:3000/Recipe/ does
> nothing, and the edit or destroy links take me to a Not Found page
> with the message  "`/Recipe/1'' not found" (or similar,
depending on
> the specific link).
>
> Likewise, http://127.0.0.1:3000/Recipe/new brings up the expected
> form, but clicking the Create button won''t add anything to my
database
> and just refreshes the form.
>
> What''s confounding me is that it will sometimes work correctly,
but it
> will sometimes revert to the above behavior without my having changed
> anything (at least that I''m aware of).
>
> I''m running XP Pro using MySQL and WEBbrick per the tutorial, and
I''ve
> tried deleting the cookbook directory and starting over from scratch
> several times.  That has worked twice (for a little while, at least),
> and failed twice.
>
> Has anyone seen this behavior before?  Is there some fix for it?
That sounds pretty strange... I really don''t know what could be causing
that. I would suggest trying to isolate the problem (when it occurs) by
doing something like this:

1) First try closing all instances of your browser and then restart the
browser to check out your page. Perhaps its got something to do with browser
caching.

2) If that doesn''t work, try restarting the WEBrick server, and see if
it
then starts to work.

If either of these work for you (or don''t work for you), please report
it
back here as these steps my clue us in on where to look for the source of
your problem.

Curt

Thanks for your help.

I can tell what''s wrong, and I''ve got a pretty good idea what
I did to
cause it, although I don''t understand the reason.

I recreated the cookbook project from scratch, and it worked fine.  I
made it a point to look very carefully at the URLs involved, and the
URL associated with Destroy was http://127.0.0.1:3000/Recipe/destroy/1
(where 1 is apparently the recipe id).

I then shut down WEBrick, changed to another rails project directory,
and restarted it from there using ''ruby script\server'' as
usual.  That
project exhibited the same behavior I described earlier.  I then shut
down WEBrick again, cd''d to the cookbook directory, started it from
there, and the cookbook project (which had previously worked
correctly), had stopped working.

I checked the URLs, and they appear to be broken.  For instance, the
link for Destroy now points to http://127.0.0.1:3000/Recipe//1. 
Typing http://127.0.0.1:3000/Recipe/destroy/1 directly into the
browser address bar takes me to an error page telling me that record
couldn''t be found, but it does actually remove it from the db.

As far as I can tell, at this point restarting WEBrick, closing
browsers, and even rebooting won''t fix the problem.

It hadn''t occurred to me that switching between projects would have
that effect.  So what''s going on that I''m misunderstanding?

Thanks again,
Ryan

On Sun, 23 Jan 2005 21:42:33 -0600, Curt Hibbs
<curt-fk6st7iWb8MAvxtiuMwx3w@public.gmane.org>
wrote:
> Ryan Wells wrote:
> >
> > I''m a Ruby Nuby, so please bear with me....
> >
> > I''ve been working through the OnLAMP tutorial, and it seems
to work
> > fine, at least for a while.  At some (apparently random) point,
> > however, the scaffold-provided links seem to stop working.
> >
> > That is, the New Recipe link from http://127.0.0.1:3000/Recipe/ does
> > nothing, and the edit or destroy links take me to a Not Found page
> > with the message  "`/Recipe/1'' not found" (or
similar, depending on
> > the specific link).
> >
> > Likewise, http://127.0.0.1:3000/Recipe/new brings up the expected
> > form, but clicking the Create button won''t add anything to my
database
> > and just refreshes the form.
> >
> > What''s confounding me is that it will sometimes work
correctly, but it
> > will sometimes revert to the above behavior without my having changed
> > anything (at least that I''m aware of).
> >
> > I''m running XP Pro using MySQL and WEBbrick per the tutorial,
and I''ve
> > tried deleting the cookbook directory and starting over from scratch
> > several times.  That has worked twice (for a little while, at least),
> > and failed twice.
> >
> > Has anyone seen this behavior before?  Is there some fix for it?
> 
> That sounds pretty strange... I really don''t know what could be
causing
> that. I would suggest trying to isolate the problem (when it occurs) by
> doing something like this:
> 
> 1) First try closing all instances of your browser and then restart the
> browser to check out your page. Perhaps its got something to do with
browser
> caching.
> 
> 2) If that doesn''t work, try restarting the WEBrick server, and
see if it
> then starts to work.
> 
> If either of these work for you (or don''t work for you), please
report it
> back here as these steps my clue us in on where to look for the source of
> your problem.
> 
> Curt
> 
>

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Ryan Wells wrote:
> I recreated the cookbook project from scratch, and it worked fine.  I
> made it a point to look very carefully at the URLs involved, and the
> URL associated with Destroy was http://127.0.0.1:3000/Recipe/destroy/1
> (where 1 is apparently the recipe id).
Use all-lowercase in your URLs:  http://127.0.0.1:3000/recipe/

Rails does a case-insensitive match on the URL to determine the
controller and action, but does a case-sensitive match to generate new
URLs (redirect_to, link_to, url_for, etc.)  This gotcha (bug?) snags a
lot of folks.

jeremy
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Ah, yes, that''s it.  I didn''t realize that the real variable
was
following the links in the article (all lowercase) vs. typing them in
myself.  I knew it had to be something boneheaded. :-)

Thanks to Jeremy and Curt!

On Sun, 23 Jan 2005 22:23:24 -0800, Jeremy Kemper
<jeremy-w7CzD/W5Ocjk1uMJSBkQmQ@public.gmane.org>
wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Ryan Wells wrote:
> > I recreated the cookbook project from scratch, and it worked fine.  I
> > made it a point to look very carefully at the URLs involved, and the
> > URL associated with Destroy was http://127.0.0.1:3000/Recipe/destroy/1
> > (where 1 is apparently the recipe id).
> 
> Use all-lowercase in your URLs:  http://127.0.0.1:3000/recipe/
> 
> Rails does a case-insensitive match on the URL to determine the
> controller and action, but does a case-sensitive match to generate new
> URLs (redirect_to, link_to, url_for, etc.)  This gotcha (bug?) snags a
> lot of folks.
> 
> jeremy
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.2.6 (Darwin)
> Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org
> 
> iD8DBQFB9JRcAQHALep9HFYRAn6HAJ9iIiJLdbw9xGMmQcu/jZefTog/SACgyc5X
> VL4cNhw4EIqj7ePTTi5a9MM> =tIQo
> -----END PGP SIGNATURE-----
>

If this question is as stupid as I think it is please feel free to tell me
to RTM.
How do you alter the recipe/new page to include being able to choose a
category?
If you only alter it through the edit function crashes happen.
	Sorry for the dumbness of this question
	David

Gonzo wrote:
>
> If this question is as stupid as I think it is please feel free to tell me
> to RTM.
> How do you alter the recipe/new page to include being able to choose a
> category?
> If you only alter it through the edit function crashes happen.
Its not a dumb question, I can see that this is a flaw in the tutorial (I
never added a new recipe after adding categories -- duh!).

You need to create you own "new" action in the controller and create a
"new"
view template, overriding the one provided by the scaffolding. Just use what
you did to add categories in the edit function as a guide.

I will correct this in Part 2 of the tutorial (which I am currently working
on).

Curt

Curt,

Thanks for the tutorial.
After much hair pulling after installing rails 0.9.5 using the
gem install rails
command. I finally discovered that installing:
gem install rails -v 0.9.4
didn''t work either, since 0.9.5 was still installed.
I did a:
gem uninstall rails
and told it to uninstall both version. For safe measure,
I also uninstalled actionrecord, et. al. and reinstalled
fresh with the command:
gem install rails -v 0.9.4
Finally I''m at the ''Unknown action'' point of the
tutorial!

Thanks!

Regards,
   JJ

On 26-Jan-2005, at 13:32, Curt Hibbs wrote:
> Gonzo wrote:
>>
>> If this question is as stupid as I think it is please feel free to 
>> tell me
>> to RTM.
>> How do you alter the recipe/new page to include being able to choose a
>> category?
>> If you only alter it through the edit function crashes happen.
>
> Its not a dumb question, I can see that this is a flaw in the tutorial 
> (I
> never added a new recipe after adding categories -- duh!).
>
> You need to create you own "new" action in the controller and
create a
> "new"
> view template, overriding the one provided by the scaffolding. Just 
> use what
> you did to add categories in the edit function as a guide.
>
> I will correct this in Part 2 of the tutorial (which I am currently 
> working
> on).
>
> Curt
>
> _______________________________________________
> Rails mailing list
> Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
> http://lists.rubyonrails.org/mailman/listinfo/rails
>

John Johnson wrote:
>
> Curt,
>
> Thanks for the tutorial.
> After much hair pulling after installing rails 0.9.5 using the
> gem install rails
> command. I finally discovered that installing:
> gem install rails -v 0.9.4
> didn''t work either, since 0.9.5 was still installed.
> I did a:
> gem uninstall rails
> and told it to uninstall both version. For safe measure,
> I also uninstalled actionrecord, et. al. and reinstalled
> fresh with the command:
> gem install rails -v 0.9.4
> Finally I''m at the ''Unknown action'' point of the
tutorial!
Thanks for your patience. The ONLamp editor just updated the tutorial to
specify version 0.9.4 in the rails installation. So, hopefully, others
won''t
have to go through what you did.

Curt