From greg.mccall at telstra.com  Thu Sep  5 19:21:23 2002
From: greg.mccall at telstra.com (Greg McCall)
Date: Thu, 5 Sep 2002 19:21:23 +1000
Subject: [albatross-users] Should I consider Albatross if I allready use Zope
Message-ID: <000801c254bd$9b84a9b0$bc3d30cb@greg>

Hi

Does anyone have comments on advantages/disadvantages between Zope and
Albatross?

Cheers

Greg

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From andrewm at object-craft.com.au  Wed Sep 11 11:33:43 2002
From: andrewm at object-craft.com.au (Andrew McNamara)
Date: Wed, 11 Sep 2002 11:33:43 +1000
Subject: [albatross-users] Should I consider Albatross if I allready use Zope 
In-Reply-To: Message from "Greg McCall" <greg.mccall@telstra.com> 
   of "Thu, 05 Sep 2002 19:21:23 +1000." <000801c254bd$9b84a9b0$bc3d30cb@greg> 
References: <000801c254bd$9b84a9b0$bc3d30cb@greg> 
Message-ID: <20020911013343.E702A3C9B1@coffee.object-craft.com.au>

>Does anyone have comments on advantages/disadvantages between Zope and
>Albatross?

The goals with Albatross and Zope are very different. I don't have a lot of
experience with Zope, but my impression is that it tries to be all things
to all people.

Albatross, on the other hand, attempts to solve a smaller set of problems
(session management, templating, separation of logic and presentation,
etc). The intention is that it is easy for people to understand it's
code and extend it, if need be, in the direction they require.

Someone who already knows Zope might choose Albatross for applications
where the complexity of Zope is unwarranted, or in an environment where
installing Zope is problematic (for example, third-party web hosting),
or where the applications will be maintained by developers who haven't
been indoctrinated to the Zope way... 8-)

-- 
Andrew McNamara, Senior Developer, Object Craft
http://www.object-craft.com.au/


From gnb at itga.com.au  Fri Sep 13 15:31:58 2002
From: gnb at itga.com.au (Gregory Bond)
Date: Fri, 13 Sep 2002 15:31:58 +1000
Subject: [albatross-users] complete newbie al-for / template problem....
Message-ID: <200209130531.PAA05004@lightning.itga.com.au>

I'm a complete newbie when it comes to albatross, but the following script is 
giving errors I don't understand.

s = '''
        <table>
          <al-for iter="f" expr = "flist">
            <tr>
              <al-for iter="f2" expr = "filenames(f)">
                <td><al-value expr="f2"></td>
              </al-for>
            </tr>
          </al-for>
        </table>
'''

import albatross
ctx = albatross.SimpleContext('.')
albatross.Template(ctx, '<magic>', s).to_html(ctx)
ctx.flush_content()

Traceback (most recent call last):
  File "t.py", line 15, in ?
    albatross.Template(ctx, '<magic>', s).to_html(ctx)
  File "/usr/local/lib/python2.1/site-packages/albatross/template.py", line 283, in __init__
    raise TemplateError('%s:%s: "%s"; unexpected "%s" end tag' \
albatross.template.TemplateError: <magic>:7: "/al-for"; unexpected "al-for" end tag

I've stared and stared at this, and compared it to the popview example, and 
I'm stumped.

Sign me confused....

Greg.





From djc at object-craft.com.au  Fri Sep 13 17:03:29 2002
From: djc at object-craft.com.au (Dave Cole)
Date: 13 Sep 2002 17:03:29 +1000
Subject: [albatross-users] complete newbie al-for / template problem....
In-Reply-To: <200209130531.PAA05004@lightning.itga.com.au>
References: <200209130531.PAA05004@lightning.itga.com.au>
Message-ID: <m3admm2wxq.fsf@ferret.object-craft.com.au>

gnb> I'm a complete newbie when it comes to albatross, but the
gnb> following script is giving errors I don't understand.
gnb> 
gnb> s = '''
gnb>         <table>
gnb>           <al-for iter="f" expr = "flist">
gnb>             <tr>
gnb>               <al-for iter="f2" expr = "filenames(f)">
gnb>                 <td><al-value expr="f2"></td>
gnb>               </al-for>
gnb>             </tr>
gnb>           </al-for>
gnb>         </table>
gnb> '''
gnb> 
gnb> import albatross
gnb> ctx = albatross.SimpleContext('.')
gnb> albatross.Template(ctx, '<magic>', s).to_html(ctx)
gnb> ctx.flush_content()
gnb> 
gnb> Traceback (most recent call last):
gnb>   File "t.py", line 15, in ?
gnb>     albatross.Template(ctx, '<magic>', s).to_html(ctx)
gnb>   File "/usr/local/lib/python2.1/site-packages/albatross/template.py", line 283, in __init__
gnb>     raise TemplateError('%s:%s: "%s"; unexpected "%s" end tag' \
gnb> albatross.template.TemplateError: <magic>:7: "/al-for"; unexpected "al-for" end tag
gnb> 
gnb> I've stared and stared at this, and compared it to the popview
gnb> example, and I'm stumped.

I think the spaces around the '=' in the <al-for ... expr = "...">
tags are causing the parser regexes to not recognise the tags.  Things
which are not recognised by the regex are treated as plain text.

Try changing the template to this:

        <table>
          <al-for iter="f" expr="flist">
            <tr>
              <al-for iter="f2" expr="filenames(f)">
                <td><al-value expr="f2"></td>
              </al-for>
            </tr>
          </al-for>
        </table>

- Dave

-- 
http://www.object-craft.com.au



From andrewm at object-craft.com.au  Fri Sep 13 17:09:21 2002
From: andrewm at object-craft.com.au (Andrew McNamara)
Date: Fri, 13 Sep 2002 17:09:21 +1000
Subject: [albatross-users] complete newbie al-for / template problem.... 
In-Reply-To: Message from Dave Cole <djc@object-craft.com.au> 
   of "13 Sep 2002 17:03:29 +1000." <m3admm2wxq.fsf@ferret.object-craft.com.au> 
References: <200209130531.PAA05004@lightning.itga.com.au>  <m3admm2wxq.fsf@ferret.object-craft.com.au> 
Message-ID: <20020913070921.D8D3C3C9B1@coffee.object-craft.com.au>

>I think the spaces around the '=' in the <al-for ... expr = "...">
>tags are causing the parser regexes to not recognise the tags.  Things
>which are not recognised by the regex are treated as plain text.

One other thing, I suspect you should be using f.value(), which is the
flist element, rather than just plain "f", which is the iterator instance.

>Try changing the template to this:
>
>        <table>
>          <al-for iter="f" expr="flist">
>            <tr>
>              <al-for iter="f2" expr="filenames(f)">
>                <td><al-value expr="f2"></td>
>              </al-for>
>            </tr>
>          </al-for>
>        </table>
-- 
Andrew McNamara, Senior Developer, Object Craft
http://www.object-craft.com.au/


From gnb at itga.com.au  Fri Sep 13 17:41:19 2002
From: gnb at itga.com.au (Gregory Bond)
Date: Fri, 13 Sep 2002 17:41:19 +1000
Subject: [albatross-users] complete newbie al-for / template problem.... 
In-Reply-To: Your message of 13 Sep 2002 17:03:29 +1000.
Message-ID: <200209130741.RAA16435@lightning.itga.com.au>

> I think the spaces around the '=' in the <al-for ... expr = "...">
> tags are causing the parser regexes to not recognise the tags.

That looks like it.  It seems the template parser thinggy is much more limited 
than I might haver expected.  (I don't remember reading anything that warned 
against this sort of thing, but perhaps this is assumed XML knowledge?)

Some other ways I have tricked it:
	<al-for iter="f", expr="alist">	(note the bogus comma)
	
	<al-for iter="f" expr='''
		( 1, 2, 3,  # Lots and lots more
		4, 5, 6
		)
		'''> (which seems reasonable from a python programmer's viewpoint!)

These both gave an unhelpful message about "</al-for> not expected".

Also:
	<al-input type="text" name="aname" size=10> 
		(note the missing "" around the size arg)
which caused the al-input tag to be passed through the template expansion 
verbatim, even tho this seems to work in raw HTML.

Not bad for a couple of hours fiddling!

So this comes to a suggestion: add a section to the manual to explain that the 
tag format is very picky and must be properly-formated XML.

And a complete aside: has anyone looked at an Xemacs XML editing mode that
knows the albatross tags?

Greg.




From andrewm at object-craft.com.au  Fri Sep 13 19:39:49 2002
From: andrewm at object-craft.com.au (Andrew McNamara)
Date: Fri, 13 Sep 2002 19:39:49 +1000
Subject: [albatross-users] complete newbie al-for / template problem.... 
In-Reply-To: Message from Gregory Bond <gnb@itga.com.au> 
   of "Fri, 13 Sep 2002 17:41:19 +1000." <200209130741.RAA16435@lightning.itga.com.au> 
References: <200209130741.RAA16435@lightning.itga.com.au> 
Message-ID: <20020913093949.556033C9B2@coffee.object-craft.com.au>

>That looks like it.  It seems the template parser thinggy is much more
>limited than I might haver expected.  (I don't remember reading anything
>that warned against this sort of thing, but perhaps this is assumed XML
>knowledge?)

More likely we've just overlooked documenting it! 8-)

The template parser is a huge regular expression - the downside is that
it will overlook things that aren't correctly structured - the upside is
that it will overlook everything but albatross tags (this is important
for performance - if we used a real XML parser, we'd have to build an
enourmous tree of every HTML tag, which, in python, would really bite).
It also means that the user can be lazy in their pure-HTML mark-up
without Albatross choking.

>Some other ways I have tricked it:
>	<al-for iter="f", expr="alist">	(note the bogus comma)

That's asking for it! 8-)

>	<al-for iter="f" expr='''
>		( 1, 2, 3,  # Lots and lots more
>		4, 5, 6
>		)
>		'''> (which seems reasonable from a python programmer's viewpoint!)

We could, in fact, relatively easily extend the parsing regexp to
handle this. But an XML editor would probably choke (not that we're 100%
correct with our XML at the moment - things like <al-else> really should
be <al-else /> (this does work)).

>These both gave an unhelpful message about "</al-for> not expected".

Because the start tag wasn't recognised by the regexp.

>Also:
>	<al-input type="text" name="aname" size=10> 
>		(note the missing "" around the size arg)
>which caused the al-input tag to be passed through the template expansion 
>verbatim, even tho this seems to work in raw HTML.

Yep - I suspect the regexp is again not seeing the attribute. XHTML
explicitly disallows unquoted attributes.

>Not bad for a couple of hours fiddling!

Indeed - it's good having a fresh set of eyes over the code - you pick up
many things that we miss. Keep the reports coming... 8-)

>So this comes to a suggestion: add a section to the manual to explain that
>the tag format is very picky and must be properly-formated XML.

Good idea.

>And a complete aside: has anyone looked at an Xemacs XML editing mode that
>knows the albatross tags?

That would be question for Dave, I think - he uses emacs more regularly
than me.

-- 
Andrew McNamara, Senior Developer, Object Craft
http://www.object-craft.com.au/


From djc at object-craft.com.au  Sun Sep 15 12:58:50 2002
From: djc at object-craft.com.au (Dave Cole)
Date: 15 Sep 2002 12:58:50 +1000
Subject: [albatross-users] complete newbie al-for / template problem....
In-Reply-To: <20020913093949.556033C9B2@coffee.object-craft.com.au>
References: <200209130741.RAA16435@lightning.itga.com.au>
	<20020913093949.556033C9B2@coffee.object-craft.com.au>
Message-ID: <m3fzwcarh1.fsf@ferret.object-craft.com.au>

>>>>> "Andrew" == Andrew McNamara <andrewm at object-craft.com.au> writes:

>> And a complete aside: has anyone looked at an Xemacs XML editing
>> mode that knows the albatross tags?

Andrew> That would be question for Dave, I think - he uses emacs more
Andrew> regularly than me.

I know enough elisp to make my .emacs work so an Albatross extension
to any XML editing mode would be difficult.

- Dave

-- 
http://www.object-craft.com.au



From bdhruva at gmx.net  Mon Sep 16 07:52:15 2002
From: bdhruva at gmx.net (Dhruva B. Reddy)
Date: Sun, 15 Sep 2002 15:52:15 -0600
Subject: [albatross-users] Uploading Files
Message-ID: <20020915215215.GA8312@dr.mobizinc.com>

I am trying to upload a file.  From within my application, I can get the
base file name, but I can't figure out where the file is stored on the
server.

Any help would be appreciated.

Thanks,
Dhruva
-- 
"Advice is what we ask for when we already know the answer but wish
we didn't." Erica Jong (b. 1942); US author



From bdhruva at gmx.net  Mon Sep 16 08:11:26 2002
From: bdhruva at gmx.net (Dhruva B. Reddy)
Date: Sun, 15 Sep 2002 16:11:26 -0600
Subject: [albatross-users] Uploading Files...Pt II
Message-ID: <20020915221126.GB8312@dr.mobizinc.com>

Actually, I figured it out--I forgot that you have to set the ENCODE
attribute in the HTML form.

Sorry for the noise.

-d
-- 
"Advice is what we ask for when we already know the answer but wish
we didn't." Erica Jong (b. 1942); US author



From gnb at itga.com.au  Mon Sep 16 15:43:09 2002
From: gnb at itga.com.au (Gregory Bond)
Date: Mon, 16 Sep 2002 15:43:09 +1000
Subject: [albatross-users] Getting None in the __albform__?
Message-ID: <200209160543.PAA17968@lightning.itga.com.au>

The problem: I have a dict of IDs for which I need descriptions.  (It's known
as "missing" in the code below.)  When I run the attached script (which is a
cut down version of the original), it does the right thing (puts up the form
etc), but when I hit Submit I get the following traceback:

Template traceback (most recent call last):

Traceback (most recent call last):
  File "/usr/local/lib/python2.1/site-packages/albatross/app.py", line 145, in run
    self.merge_request(ctx)
  File "/usr/local/lib/python2.1/site-packages/albatross/app.py", line 219, in merge_request
    ctx.merge_request()
  File "/usr/local/lib/python2.1/site-packages/albatross/context.py", line 294, in merge_request
    self.set_value(name, value)
  File "/usr/local/lib/python2.1/site-packages/albatross/context.py", line 321, in set_value
    elems = string.split(name, ',')
  File "/usr/local/lib/python2.1/string.py", line 114, in split
    return s.split(sep, maxsplit)
AttributeError: 'None' object has no attribute 'split'


Having a look at the generated HTML, and doing the unpickle trick on
__albform__, I get the following:

	{'desc_id1': 0, 'desc_id2': 0, None: 0}

Which is where I suspect the None in the traceback is coming from.

Any clues?

BTW: There orta be a neater way to run a template from a literal string, say 
a ctx.run_template_str() function, for quick 1-pagers like this!

Greg,
New set of eyes, new set of bugs!
-------------- next part --------------
#! /usr/local/bin/python

templ = '''
<html>
<head></herad>
<body>
	  <table>
	  <tr><th>ID</th><th>Description</th></tr>
	  <al-form method="POST">
	  <al-for iter="s" expr="mkeys">
	      <tr>
	      <td><al-value expr="s.value()"></td>
	      <td><al-input type="text" nameexpr="'desc_%s' % s.value()" 
			    expr="missing[s.value()]" 
			    size="10"></td>
	  </al-for>
	  <tr>
	    <td colspan="2"><al-input type="submit" value="Submit"></td>
	  </tr>
	  </al-form>
</body>
</html>
'''

import sys

import albatross
from albatross.cgiapp import Request

class Input:
    def page_enter(self, ctx):
	ctx.locals.missing = { 'id1': '', 'id2': ''}
	ctx.locals.mkeys = ctx.locals.missing.keys()
	ctx.locals.mkeys.sort()
    def page_display(self, ctx):
	#ctx.run_template('input.html')
	t = albatross.Template(ctx,'<magic>', templ)
        t.to_html(ctx)
    def page_execute(self, ctx):
	print >> sys.stderr, "Never gets here"
    
	  
app = albatross.SimpleApp('t2.py', '.', 'input', 'secret')
app.register_page('input', Input())
app.run(Request())

From andrewm at object-craft.com.au  Mon Sep 16 15:48:52 2002
From: andrewm at object-craft.com.au (Andrew McNamara)
Date: Mon, 16 Sep 2002 15:48:52 +1000
Subject: [albatross-users] Getting None in the __albform__? 
In-Reply-To: Message from Gregory Bond <gnb@itga.com.au> 
   of "Mon, 16 Sep 2002 15:43:09 +1000." <200209160543.PAA17968@lightning.itga.com.au> 
References: <200209160543.PAA17968@lightning.itga.com.au> 
Message-ID: <20020916054852.47E013C8FF@coffee.object-craft.com.au>

>Having a look at the generated HTML, and doing the unpickle trick on
>__albform__, I get the following:
>
>	{'desc_id1': 0, 'desc_id2': 0, None: 0}
>
>Which is where I suspect the None in the traceback is coming from.

My guess would be this:

    <al-input type="submit" value="Submit">

There's no name attribute there. Okay, Albatross should raise an exception
earlier in the process... 8-)

-- 
Andrew McNamara, Senior Developer, Object Craft
http://www.object-craft.com.au/


From gnb at itga.com.au  Mon Sep 16 16:17:26 2002
From: gnb at itga.com.au (Gregory Bond)
Date: Mon, 16 Sep 2002 16:17:26 +1000
Subject: [albatross-users] Getting None in the __albform__? 
In-Reply-To: Your message of Mon, 16 Sep 2002 15:48:52 +1000.
Message-ID: <200209160617.QAA20204@lightning.itga.com.au>

> My guess would be this:
> 
>     <al-input type="submit" value="Submit">
> 
> There's no name attribute there. Okay, Albatross should raise an exception
> earlier in the process... 8-)

Bingo!  Thanks!  




From bgg at object-craft.com.au  Tue Sep 17 19:31:00 2002
From: bgg at object-craft.com.au (Ben Golding)
Date: Tue, 17 Sep 2002 19:31:00 +1000
Subject: [albatross-users] Re: Install in a shell account
In-Reply-To: <3D847CC8.21352.F7FE0D@localhost>
Message-ID: <2D5B353C-CA20-11D6-9197-003065907038@object-craft.com.au>

On Monday, Sep 16, 2002, at 02:27 Australia/Melbourne, Bill Bell wrote:

> I'm just starting out with Albatross, and just returning to a variant 
> of Unix from an
> absence of several years.
>
> Your documentation seems quite excellent. Since it mentions your wish 
> to receive
> notifications of failures of the installation software I offer the 
> following (which you
> have probably seen before).
>
> [wbell at vex.net:albatross-1.00] $ python setup.py install
> running install
> running build
> running build_py
> creating build
> creating build/lib
> creating build/lib/albatross
> copying albatross/__init__.py -> build/lib/albatross
> copying albatross/apacheapp.py -> build/lib/albatross
> copying albatross/app.py -> build/lib/albatross
> copying albatross/cgiapp.py -> build/lib/albatross
> copying albatross/context.py -> build/lib/albatross
> copying albatross/pidfile.py -> build/lib/albatross
> copying albatross/randompage.py -> build/lib/albatross
> copying albatross/session.py -> build/lib/albatross
> copying albatross/sessionfile.py -> build/lib/albatross
> copying albatross/simpleserver.py -> build/lib/albatross
> copying albatross/tags.py -> build/lib/albatross
> copying albatross/template.py -> build/lib/albatross
> running build_scripts
> creating build/scripts
> copying and adjusting session-server/al-session-daemon -> build/scripts
> running install_lib
> creating /usr/lib/python2.1/site-packages/albatross
> error: could not create '/usr/lib/python2.1/site-packages/albatross': 
> Permission
>  denied
>
> Best of luck with your product. I'm itching to get started using it.

This looks like it's a simple permissions problem: you probably need to 
install
albatross as root (or a user who has access to 
/usr/lib/python2.1/site-packages).
Try that and you should have more success.

BTW, the mailing list for albatross is 
"albatross-users at object-craft.com.au".

	Ben.



From bill-bell at bill-bell.hamilton.on.ca  Tue Sep 17 22:23:46 2002
From: bill-bell at bill-bell.hamilton.on.ca (Bill Bell)
Date: Tue, 17 Sep 2002 08:23:46 -0400
Subject: [albatross-users] Re: Install in a shell account
In-Reply-To: <2D5B353C-CA20-11D6-9197-003065907038@object-craft.com.au>
References: <3D847CC8.21352.F7FE0D@localhost>
Message-ID: <3D86E692.23128.7FDDB5@localhost>

Ben,

I _really_ should have mentioned that I was doing this on Win2K (where 
constructions like "/usr/lib/python" haven't much meaning) :o).

Bill

On 17 Sep 2002 at 19:31, Ben Golding wrote:

> 
> On Monday, Sep 16, 2002, at 02:27 Australia/Melbourne, Bill Bell
> wrote:
> 
> > I'm just starting out with Albatross, and just returning to a
> > variant of Unix from an absence of several years.
> >
> > Your documentation seems quite excellent. Since it mentions your
> > wish to receive notifications of failures of the installation
> > software I offer the following (which you have probably seen
> > before).
> >
> > [wbell at vex.net:albatross-1.00] $ python setup.py install
> > running install
> > running build
> > running build_py
> > creating build
> > creating build/lib
> > creating build/lib/albatross
> > copying albatross/__init__.py -> build/lib/albatross
> > copying albatross/apacheapp.py -> build/lib/albatross
> > copying albatross/app.py -> build/lib/albatross
> > copying albatross/cgiapp.py -> build/lib/albatross
> > copying albatross/context.py -> build/lib/albatross
> > copying albatross/pidfile.py -> build/lib/albatross
> > copying albatross/randompage.py -> build/lib/albatross
> > copying albatross/session.py -> build/lib/albatross
> > copying albatross/sessionfile.py -> build/lib/albatross
> > copying albatross/simpleserver.py -> build/lib/albatross
> > copying albatross/tags.py -> build/lib/albatross
> > copying albatross/template.py -> build/lib/albatross
> > running build_scripts
> > creating build/scripts
> > copying and adjusting session-server/al-session-daemon ->
> > build/scripts running install_lib creating
> > /usr/lib/python2.1/site-packages/albatross error: could not create
> > '/usr/lib/python2.1/site-packages/albatross': Permission
> >  denied
> >
> > Best of luck with your product. I'm itching to get started using it.
> 
> This looks like it's a simple permissions problem: you probably need
> to install albatross as root (or a user who has access to
> /usr/lib/python2.1/site-packages). Try that and you should have more
> success.
> 
> BTW, the mailing list for albatross is 
> "albatross-users at object-craft.com.au".
> 
>  Ben.




From neel at mediapulse.com  Wed Sep 18 03:46:16 2002
From: neel at mediapulse.com (Michael C. Neel)
Date: Tue, 17 Sep 2002 13:46:16 -0400
Subject: [albatross-users] Broken PDF
Message-ID: <C0FC22C08B82074A88B50061764157772C63DA@johnson.mediapulse.net>

Hi all,

	I'm trying to print the pdf documentation, and it breaks every
time at page 3.  This happens both from the pdf on the web site and one
built with make pdf; and also breaks on both windows and linux.  I'd
print off the ps version, but I really don't want it in the booklet form
since I don't have access to a duplex printer.

Thanks,
Mike

--
Michael C. Neel
There are only 10 types of people in the world;
those who understand binary and those who don't.


From bdhruva at gmx.net  Wed Sep 18 06:17:53 2002
From: bdhruva at gmx.net (Dhruva B. Reddy)
Date: Tue, 17 Sep 2002 14:17:53 -0600
Subject: [albatross-users] Defining an "error" page...
Message-ID: <20020917201753.GA1764@dr.mobizinc.com>

In JavaServer Pages (JSP), you have the ability to specify a page to
which the user is forwarded if there is an unrecoverable error.  This is
commonly used to send the user to a page that says "There has been an
error.  Please call the site administrator." rather than expose the user
to the raw Python error displays, such as:

Template traceback (most recent call last):

Traceback (most recent call last):
  File "/usr/lib/python2.1/site-packages/albatross/app.py", line 146, in run
      self.process_request(ctx)
  File "/usr/lib/python2.1/site-packages/albatross/app.py", line 296, in process_request func(ctx)
  File "prop_list.py", line 25, in page_process
      aContext.set_page(page)
  File "/usr/lib/python2.1/site-packages/albatross/app.py", line 86, in set_page
      self.app.load_page(self)
  File "/usr/lib/python2.1/site-packages/albatross/app.py", line 253, in load_page
      self.load_page_module(ctx, name)
  File "/usr/lib/python2.1/site-packages/albatross/app.py", line 268, in load_page_module
      file, filepath, desc = imp.find_module(name, [dirname])
ImportError: No module named bob


Is there any way to achieve the same functionality in Albatross?

Thanks,
Dhruva
-- 
"Advice is what we ask for when we already know the answer but wish
we didn't." Erica Jong (b. 1942); US author



From tchur at optushome.com.au  Wed Sep 18 06:37:42 2002
From: tchur at optushome.com.au (Tim Churches)
Date: Wed, 18 Sep 2002 06:37:42 +1000
Subject: [albatross-users] Broken PDF
References: <C0FC22C08B82074A88B50061764157772C63DA@johnson.mediapulse.net>
Message-ID: <3D879296.EF2DC670@optushome.com.au>

"Michael C. Neel" wrote:
> 
> Hi all,
> 
>         I'm trying to print the pdf documentation, and it breaks every
> time at page 3.  This happens both from the pdf on the web site and one
> built with make pdf; and also breaks on both windows and linux.  I'd
> print off the ps version, but I really don't want it in the booklet form
> since I don't have access to a duplex printer.

This is a known bug - the PDFs generated from the LaTex2 source viathe
Python macros
cause Adobe Acrobat Version 5 to fall over whne printing. I think the
PDF prints OK 
from Acrobat version 4. Not sure about GhostView etc. We worked around
this problem for 
another project by converting the PostScript to a PDF using the
commercial Acrobat
Distiller. I am happy to do this for you, guys, if you e-mail me the
PostScript at 
work.

Tim C

> 
> Thanks,
> Mike
> 
> --
> Michael C. Neel
> There are only 10 types of people in the world;
> those who understand binary and those who don't.
> _______________________________________________
> Albatross-users mailing list
> Albatross-users at object-craft.com.au
> https://www.object-craft.com.au/cgi-bin/mailman/listinfo/albatross-users


From neel at mediapulse.com  Wed Sep 18 07:14:46 2002
From: neel at mediapulse.com (Michael C. Neel)
Date: Tue, 17 Sep 2002 17:14:46 -0400
Subject: [albatross-users] Broken PDF
Message-ID: <C0FC22C08B82074A88B50061764157775BAD@johnson.mediapulse.net>

Thanks, I guess I'll have to track down reader v4.  I have converted the
ps to pdf, but the ps is not in the same format as the pdf it is in a
booklet form and I'd rather have it in normal form.

Mike

-----Original Message-----
From: Tim Churches [mailto:tchur at optushome.com.au] 
Sent: Tuesday, September 17, 2002 4:38 PM
To: Michael C. Neel
Cc: albatross-users at object-craft.com.au
Subject: Re: [albatross-users] Broken PDF


"Michael C. Neel" wrote:
> 
> Hi all,
> 
>         I'm trying to print the pdf documentation, and it breaks every
> time at page 3.  This happens both from the pdf on the web site and
one
> built with make pdf; and also breaks on both windows and linux.  I'd
> print off the ps version, but I really don't want it in the booklet
form
> since I don't have access to a duplex printer.

This is a known bug - the PDFs generated from the LaTex2 source viathe
Python macros
cause Adobe Acrobat Version 5 to fall over whne printing. I think the
PDF prints OK 
from Acrobat version 4. Not sure about GhostView etc. We worked around
this problem for 
another project by converting the PostScript to a PDF using the
commercial Acrobat
Distiller. I am happy to do this for you, guys, if you e-mail me the
PostScript at 
work.

Tim C

> 
> Thanks,
> Mike
> 
> --
> Michael C. Neel
> There are only 10 types of people in the world;
> those who understand binary and those who don't.
> _______________________________________________
> Albatross-users mailing list
> Albatross-users at object-craft.com.au
>
https://www.object-craft.com.au/cgi-bin/mailman/listinfo/albatross-users


From andrewm at object-craft.com.au  Wed Sep 18 10:31:29 2002
From: andrewm at object-craft.com.au (Andrew McNamara)
Date: Wed, 18 Sep 2002 10:31:29 +1000
Subject: [albatross-users] Defining an "error" page... 
In-Reply-To: Message from "Dhruva B. Reddy" <bdhruva@gmx.net> 
   of "Tue, 17 Sep 2002 14:17:53 CST." <20020917201753.GA1764@dr.mobizinc.com> 
References: <20020917201753.GA1764@dr.mobizinc.com> 
Message-ID: <20020918003129.C46133C8FF@coffee.object-craft.com.au>

>In JavaServer Pages (JSP), you have the ability to specify a page to
>which the user is forwarded if there is an unrecoverable error.  This is
>commonly used to send the user to a page that says "There has been an
>error.  Please call the site administrator." rather than expose the user
>to the raw Python error displays, such as:
[...]
>Is there any way to achieve the same functionality in Albatross?

Yes - the handle_exception() method on the Application mixin attempts to
run the template "traceback.html", and only if that fails (doesn't exist,
or produces an exception) does it display the traceback to the user.

The python and template tracebacks are available to the template in
python_exc and html_exc respectively.

Alternatively, if you want to do something this framework doesn't allow,
you can define you own handle_exception() method on your application
class.

Albatross tries to make it's source accessible for extension - have a look
at the Application class in app.py to see how this machinery works.

-- 
Andrew McNamara, Senior Developer, Object Craft
http://www.object-craft.com.au/


From andrewm at object-craft.com.au  Wed Sep 18 10:35:57 2002
From: andrewm at object-craft.com.au (Andrew McNamara)
Date: Wed, 18 Sep 2002 10:35:57 +1000
Subject: [albatross-users] Re: Install in a shell account 
In-Reply-To: Message from "Bill Bell" <bill-bell@bill-bell.hamilton.on.ca> 
   of "Tue, 17 Sep 2002 08:23:46 -0400." <3D86E692.23128.7FDDB5@localhost> 
References: <3D847CC8.21352.F7FE0D@localhost>  <3D86E692.23128.7FDDB5@localhost> 
Message-ID: <20020918003557.211EF3C8FF@coffee.object-craft.com.au>

>I _really_ should have mentioned that I was doing this on Win2K (where 
>constructions like "/usr/lib/python" haven't much meaning) :o).

Have you tried doing the install from an account with administrator
privileges?

-- 
Andrew McNamara, Senior Developer, Object Craft
http://www.object-craft.com.au/


From djc at object-craft.com.au  Wed Sep 18 10:38:07 2002
From: djc at object-craft.com.au (Dave Cole)
Date: 18 Sep 2002 10:38:07 +1000
Subject: [albatross-users] Defining an "error" page...
In-Reply-To: <20020917201753.GA1764@dr.mobizinc.com>
References: <20020917201753.GA1764@dr.mobizinc.com>
Message-ID: <m3sn085dzk.fsf@ferret.object-craft.com.au>

> In JavaServer Pages (JSP), you have the ability to specify a page to
> which the user is forwarded if there is an unrecoverable error.  This is
> commonly used to send the user to a page that says "There has been an
> error.  Please call the site administrator." rather than expose the user
> to the raw Python error displays, such as:
> 
> Template traceback (most recent call last):
> 
> Traceback (most recent call last):
>   File "/usr/lib/python2.1/site-packages/albatross/app.py", line 146, in run
>       self.process_request(ctx)
>   File "/usr/lib/python2.1/site-packages/albatross/app.py", line 296, in process_request func(ctx)
>   File "prop_list.py", line 25, in page_process
>       aContext.set_page(page)
>   File "/usr/lib/python2.1/site-packages/albatross/app.py", line 86, in set_page
>       self.app.load_page(self)
>   File "/usr/lib/python2.1/site-packages/albatross/app.py", line 253, in load_page
>       self.load_page_module(ctx, name)
>   File "/usr/lib/python2.1/site-packages/albatross/app.py", line 268, in load_page_module
>       file, filepath, desc = imp.find_module(name, [dirname])
> ImportError: No module named bob
> 
> 
> Is there any way to achieve the same functionality in Albatross?

If you look in app.py at the handle_exception() method of the
Application class you will see how it performs the exception reporting
you are seeing.  All Albatross application classes inherit from
Application.  You have two options for changing what you see:

1) Provide a template file called traceback.html which contains the
   text you want the user to see.

2) Subclass the Albatross application object and override the
   handle_exception() method.  You could make your version report the
   traceback to a log file, send email, whatever takes your fancy.

- Dave

-- 
http://www.object-craft.com.au



From bill-bell at bill-bell.hamilton.on.ca  Wed Sep 18 10:53:53 2002
From: bill-bell at bill-bell.hamilton.on.ca (Bill Bell)
Date: Tue, 17 Sep 2002 20:53:53 -0400
Subject: [albatross-users] Re: Install in a shell account 
In-Reply-To: <20020918003557.211EF3C8FF@coffee.object-craft.com.au>
References: Message from "Bill Bell" <bill-bell@bill-bell.hamilton.on.ca>  of "Tue, 17 Sep 2002 08:23:46 -0400." <3D86E692.23128.7FDDB5@localhost> 
Message-ID: <3D879661.27918.32EA0C1@localhost>

Andrew, thanks for responding. Yes, I've been using an administrator's login.

I changed install.cfg since reporting my problem. It now contains the following line.

cgibin_dir = "H:/Program Files/Apache Group/Apache/cgi-bin/albatross"

and these installs work just fine.

It's entirely possible that I did something incorrectly during the installation of albatross 
as a whole, and that this resulted in the cgibin_dir being set to something suitable for 
a Unix-style system. 

Just thought you might like to know what my experience was.

Cheers,

Bill


On 18 Sep 2002 at 10:35, Andrew McNamara wrote:

> >I _really_ should have mentioned that I was doing this on Win2K
> >(where constructions like "/usr/lib/python" haven't much meaning)
> >:o).
> 
> Have you tried doing the install from an account with administrator
> privileges?
> 
> -- 
> Andrew McNamara, Senior Developer, Object Craft
> http://www.object-craft.com.au/




From andrewm at object-craft.com.au  Wed Sep 18 11:15:38 2002
From: andrewm at object-craft.com.au (Andrew McNamara)
Date: Wed, 18 Sep 2002 11:15:38 +1000
Subject: [albatross-users] Re: Install in a shell account 
In-Reply-To: Message from "Bill Bell" <bill-bell@bill-bell.hamilton.on.ca> 
   of "Tue, 17 Sep 2002 20:53:53 -0400." <3D879661.27918.32EA0C1@localhost> 
References: Message from "Bill Bell" <bill-bell@bill-bell.hamilton.on.ca> of "Tue, 17 Sep 2002 08:23:46 -0400." <3D86E692.23128.7FDDB5@localhost>  <3D879661.27918.32EA0C1@localhost> 
Message-ID: <20020918011538.0F7E43C21B@coffee.object-craft.com.au>

>Andrew, thanks for responding. Yes, I've been using an administrator's login.
>
>I changed install.cfg since reporting my problem. It now contains the
>following line.
>
>cgibin_dir = "H:/Program Files/Apache Group/Apache/cgi-bin/albatross"
>
>and these installs work just fine.

Is this a different problem, though? The original failure appeared to
occur while installing albatross itself, but this sounds more like a
problem with the sample installer (it prompts the user to supply install
paths the first time around, then saves them to install.cfg)?

>It's entirely possible that I did something incorrectly during the
>installation of albatross as a whole, and that this resulted in the
>cgibin_dir being set to something suitable for a Unix-style system. 

If it was the samples installer, it does prompt, but the default is set
to the Debian-centric /usr/lib/cgi-bin...

>Just thought you might like to know what my experience was.

Yes indeed - all feedback is appreciated.

-- 
Andrew McNamara, Senior Developer, Object Craft
http://www.object-craft.com.au/


From bill-bell at bill-bell.hamilton.on.ca  Thu Sep 19 01:48:50 2002
From: bill-bell at bill-bell.hamilton.on.ca (Bill Bell)
Date: Wed, 18 Sep 2002 11:48:50 -0400
Subject: [albatross-users] Re: Install in a shell account 
In-Reply-To: <20020918011538.0F7E43C21B@coffee.object-craft.com.au>
References: Message from "Bill Bell" <bill-bell@bill-bell.hamilton.on.ca>  of "Tue, 17 Sep 2002 20:53:53 -0400." <3D879661.27918.32EA0C1@localhost> 
Message-ID: <3D886822.26469.13E67EF@localhost>

Andrew, my apologies for not being more lucid in the first place. I was assuming 
you'd seen this more often. - Bill

On 18 Sep 2002 at 11:15, Andrew McNamara wrote:

> >Andrew, thanks for responding. Yes, I've been using an
> >administrator's login.
> >
> >I changed install.cfg since reporting my problem. It now contains the
> >following line.
> >
> >cgibin_dir = "H:/Program Files/Apache Group/Apache/cgi-bin/albatross"
> >
> >and these installs work just fine.
> 
> Is this a different problem, though? The original failure appeared to
> occur while installing albatross itself, but this sounds more like a
> problem with the sample installer (it prompts the user to supply
> install paths the first time around, then saves them to install.cfg)?
> 
> >It's entirely possible that I did something incorrectly during the
> >installation of albatross as a whole, and that this resulted in the
> >cgibin_dir being set to something suitable for a Unix-style system. 
> 
> If it was the samples installer, it does prompt, but the default is
> set to the Debian-centric /usr/lib/cgi-bin...
> 
> >Just thought you might like to know what my experience was.
> 
> Yes indeed - all feedback is appreciated.
> 
> -- 
> Andrew McNamara, Senior Developer, Object Craft
> http://www.object-craft.com.au/




From bdhruva at gmx.net  Fri Sep 20 04:52:04 2002
From: bdhruva at gmx.net (Dhruva B. Reddy)
Date: Thu, 19 Sep 2002 12:52:04 -0600
Subject: [albatross-users] Questions
Message-ID: <20020919185204.GA889@dr.mobizinc.com>

We are building an application that will process image files (JPGs,
GIFs, etc.) uploaded by the user.

1) How do we get to the Content-Type to figure out the content type of
   the uploaded file
2) How do we get to the file name that the user specified?
3) How do we limit the memory used during a binary file upload and
   provide a way to gracefully inform the user that they have exceeded
   this size and must therefore upload a file with less number of bytes?

Thanks,
Dhruva
-- 
"Advice is what we ask for when we already know the answer but wish
we didn't." Erica Jong (b. 1942); US author



From djc at object-craft.com.au  Sat Sep 21 23:07:05 2002
From: djc at object-craft.com.au (Dave Cole)
Date: 21 Sep 2002 23:07:05 +1000
Subject: [albatross-users] Questions
In-Reply-To: <20020919185204.GA889@dr.mobizinc.com>
References: <20020919185204.GA889@dr.mobizinc.com>
Message-ID: <m3n0qbze2u.fsf@ferret.object-craft.com.au>

> We are building an application that will process image files (JPGs,
> GIFs, etc.) uploaded by the user.
> 
> 1) How do we get to the Content-Type to figure out the content type of
>    the uploaded file

ctx.request.get_header('Content-Type')

> 2) How do we get to the file name that the user specified?

To handle file uploading you will need to make a slight change to the
Request class to detect when a field is of type file and return
something other then a plain value.

For example in cgiapp.Request.field_value() you would need to do
something like this:

    def field_value(self, name):
        field = self.__fields[name]
        if type(field) is type([]):
            value = []
            for elem in field:
                value.append(elem.value)
            return value
+       if hasattr(field, 'filename'):
+           return field
        return field.value

This would just return the raw request field which you handle as per
normal cgi file upload.

Retro-fitting file upload to apacheapp.Request would require something
similar.

> 3) How do we limit the memory used during a binary file upload and
>    provide a way to gracefully inform the user that they have exceeded
>    this size and must therefore upload a file with less number of bytes?

The standard Python cgi module does not read the entire file into
memory - it reads and writes 8k at a time.  The mod_python module
seems to read everything as text.

The Python cgi module has a maxlen variable which you can set to your
maximum file size.

At some stage we will have to implement file upload capability for
Albatross.

- Dave

-- 
http://www.object-craft.com.au