Re: [Catalyst] Documentation on DBIx Class
Tobias Kremer wrote: I need some advice on where to look for documentation specially the DBIx Class and which methods I can use in here along with Catalyst. I've already ordered the Catalyst book but until this arrive any hints? I suggest going through the tutorial application which teaches you all the basics of Catalyst and DBIx::Class: http://search.cpan.org/dist/Catalyst-Manual/lib/Catalyst/Manual/Tutorial.pod Unfortunately, Tutorial is weak. CRUD section lacks Update at all, and it does not deal with any transaction, and it seems to use poor methods to create records. Alex. ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Documentation on DBIx Class
On 1/16/08, Alex Povolotsky [EMAIL PROTECTED] wrote: Tobias Kremer wrote: I need some advice on where to look for documentation specially the DBIx Class and which methods I can use in here along with Catalyst. I've already ordered the Catalyst book but until this arrive any hints? I suggest going through the tutorial application which teaches you all the basics of Catalyst and DBIx::Class: http://search.cpan.org/dist/Catalyst-Manual/lib/Catalyst/Manual/Tutorial.pod Unfortunately, Tutorial is weak. CRUD section lacks Update at all, and it does not deal with any transaction, and it seems to use poor methods to create records. Could you provide an example of richer methods for record creation? -- Ian Tegebo ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Documentation on DBIx Class
I need some advice on where to look for documentation specially the DBIx Class and which methods I can use in here along with Catalyst. On top of everyone else's suggestions, DO read the perldocs for SQL::Abstract, as that's how DBIC queries are defined. -- Mike Whitaker - [EMAIL PROTECTED] ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Development environments and performance
Ian Docherty wrote: I would just like to canvas opinion on a good development environment and practices for Catalyst since we are starting to have some performance issues. We are running on a managed server (Red Hat Enterprise), Apache2, MySql 5.1 We have several people developing on this machine (about 5), each with their own sandboxes. I have set up apache so that each developer runs their Catalyst application under fast-cgi. We are beginning to see some performance issues especially with several people testing at the same time on different fast-cgi processes. The 'top' command shows 'server.pl' and 'perl' taking the bulk of the cpu time. CPU time? Look at paging first of all. How much RAM do you have? How much swap is your server using? Look at top, especially at system time percentage. Best case for a simple dynamic page in Catalyst to respond is about 5 seconds. With several people testing at the same time it can take 30 seconds or more to respond to a simple page. I would have hoped for only a second or so on such a lightly loaded server. Try catalyst-server, it does some (extremly basic) profiling. Alex. ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
[Catalyst] PostgreSQL quoting issues
I've got an application where I do the following:
# Look up last calculated transsum if it exists
my $rsts = $c-model ('MintAppDB::TransSum')-find ({
category = $c-req-param ('category'),
sentto = $c-req-param ('sentto'),
iso = $c-req-param ('iso')
});
sentto contains an url style link, for instance
email:[EMAIL PROTECTED]. Somewhere when generating SQL for this, it
becomes:
STH: SELECT me.updated, me.category, me.sentto, me.iso, me.amt FROM
mm_transsum me WHERE ( email:[EMAIL PROTECTED] = ? AND me.category = ? )
It seems Postgres gets confused with my usage of a variable with colon
in it, and the default quoting being done on strings somewhere in
DBD::Pg or DBIx::Class doesn't seem to pursuade Postgres from
interpreting the string with the colon in as a special variable field
(or whatever, I haven't looked to deep into this functionality of Postgres).
I've tried calling quote manually and use:
sentto = \ $myquotedstring
instead, hoping that manually calling quote from the dbh driver from
DBD::Pg would take care of it, but no such luck.
The error message being generated by Catalyst/DBIx::Class is:
Cannot mix placeholder styles :foo and ?
Does anybody have an idea how I can pursuade Postgres into accepting
this as just a simple string and that Postgres shouldn't try to
interpret anything in it?
Thanks,
Marius K.
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Re: [Catalyst] PostgreSQL quoting issues
Marius Kjeldahl wrote: I've got an application where I do the following: It seems Postgres gets confused with my usage of a variable with colon in it, and the default quoting being done on strings somewhere in DBD::Pg or DBIx::Class doesn't seem to pursuade Postgres from interpreting the string with the colon in as a special variable field (or whatever, I haven't looked to deep into this functionality of Postgres). This doesn't have anything to do with PostgreSQL. This appears to be a driver issue. instead, hoping that manually calling quote from the dbh driver from DBD::Pg would take care of it, but no such luck. The error message being generated by Catalyst/DBIx::Class is: Cannot mix placeholder styles :foo and ? Does anybody have an idea how I can pursuade Postgres into accepting this as just a simple string and that Postgres shouldn't try to interpret anything in it? Yeah, quote the string. You can't submit an unquoted string to PostgreSQL. Sincerely, Joshua D. Drake ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] PostgreSQL quoting issues
Joshua D. Drake wrote:
Does anybody have an idea how I can pursuade Postgres into accepting
this as just a simple string and that Postgres shouldn't try to
interpret anything in it?
Yeah, quote the string. You can't submit an unquoted string to PostgreSQL.
As my original post demonstrated, that was not the issue at all. But I
found the reason for the bug. It seems IF in the following expression:
my $rsts = $c-model ('MintAppDB::TransSum')-find ({
category = $c-req-param ('category'),
sentto = $c-req-param ('sentto'),
iso = $c-req-param ('iso')
});
if category and iso pointed to undefined values, the bug I struggled
with was triggered. Making sure that they were defined took care of the
problem. I guess the sql generating stuff didn't like being fed
undefined values.
Thanks anyway,
Marius K.
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Re: [Catalyst] PostgreSQL quoting issues
my $rsts = $c-model ('MintAppDB::TransSum')-find ({
category = $c-req-param ('category'),
sentto = $c-req-param ('sentto'),
iso = $c-req-param ('iso')
});
This is broken! Simply try requesting a URL such:
?category=cat1category=cat2
Carl
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Re: [Catalyst] Development environments and performance
John Goulah [EMAIL PROTECTED] wrote on 01/16/2008 11:13:06 AM: Why wouldn't you just use the standalone server bundled with Catalyst? Fcgi is great for production, but the processes are fairly thick memory wise, so having instances for each developer could be an issue. We use the cat server for development and works fine for about 5-10 people at any given time on a modest box (4G ram) Could be a massive assumption, but usually when you go through the cost (time, cap) of building out a dev server environment you want it to mirror your production servers as much as possible so that you spend time squishing bugs that may exist in your production environment -- not some other different environment. If they are using FCGI in prod it makes perfect sense to do so in dev. Why battle bugs that may be introduced on the standalone server, or worse miss bugs that _do_ affect your production environment because you are developing on a different environment? -Wade ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Development environments and performance
On Jan 16, 2008, at 5:51 PM, [EMAIL PROTECTED] wrote: John Goulah [EMAIL PROTECTED] wrote on 01/16/2008 11:13:06 AM: Why wouldn't you just use the standalone server bundled with Catalyst? Fcgi is great for production, but the processes are fairly thick memory wise, so having instances for each developer could be an issue. We use the cat server for development and works fine for about 5-10 people at any given time on a modest box (4G ram) Could be a massive assumption, but usually when you go through the cost (time, cap) of building out a dev server environment you want it to mirror your production servers as much as possible so that you spend time squishing bugs that may exist in your production environment -- not some other different environment. If they are using FCGI in prod it makes perfect sense to do so in dev. Why battle bugs that may be introduced on the standalone server, or worse miss bugs that _do_ affect your production environment because you are developing on a different environment? -Wade No, thats a testing environment. Dev is usually very different process. At least at every place I've worked at. ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
[Catalyst] Help with Cwd Error
after some upgrades of my perl modules: [EMAIL PROTECTED]:~/progs/MyApp$script/myapp_server.pl /usr/bin/perl: symbol lookup error: /usr/local/lib/perl/5.8.8/auto/Cwd/Cwd.so: undefined symbol: strlcpy Can you help me please ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] PostgreSQL quoting issues
Thank you for all the hints about the security issues with using the param call. I will replace those calls with accessing the parameters/params hash instead, which should solve the list context issues in the hash that my example was suffering from. Marius K. ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Re: Development environments and performance
On Wed, 16 Jan 2008, kevin montuori wrote: DR == Dave Rolsky [EMAIL PROTECTED] writes: DR * dev is one box per dev, with the best hardware affordable - nowadays DR * that means at least a dual core machine with 4GB of ram and decent DR * disks. at least 4 GB of ram? crikey. I'm thinking that a sane budget is $2,500 per developer machine (with monitor). Is that unreasonable? Do you really need to save a few hundred bucks on ram? i'd have to disagree. if you have a bunch of junior developers writing code, a shared (to some extent) development environment can aid in enforcing good development habits. it also allows them to work more on development than systems or database administration. never mind that it's asking a lot to make programmers (of any skill level) DBA their own oracle instances, LDAP servers, or, god forbid, siteminder installations. This is what automation was invented for. At several past positions, I've set things up so that development consisted of checking out the source and running a set up my dev env script that created/updated the database, inserted test data, set up any servers needed, etc. This doesn't require much of the individual dev, and if you have packages for your app, the installation part is pretty simple. That said, I think good developers should have some minimal sysadmin skills, and should be comfortable setting up a DBMS or LDAP server on their own machine, and difficult installations can be scripted. my suspicion is that in shops with poor shared development environments, the systems administration is more to blame for the suitability issues than the fact that the environment is shared. Well, not if there's a _resource_ issue. If, as J Rockway described, you have 40 people sharing one machine, you're probably screwed no matter how good your sysadmins are. catalyst allows for a particularly nice sandbox though, using the devlopment httpd. we're having a lot of luck providing a (robust, but not 4GB per devloper!) shared dev/sandbox environment with each of 8 or so developers running a dev httpd. we then releasing code to integration for regression testing. i'm certainly not seeing the performance problems that have been reported on this list. Presumably that depends on how many devs you have. However, I'd be going nuts if I had to deal with other devs changing the database schema, or even just changing the state of the data while I'm trying to develop against it. I stand by my position that any place not providing individual environments is backwards. -dave /*=== VegGuide.Orgwww.BookIRead.com Your guide to all that's veg. My book blog ===*/ ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Help with Cwd Error
On Wed, Jan 16, 2008 at 03:04:59PM -0600, Jonathan Rockway wrote: On Wed, 2008-01-16 at 20:41 +0200, Angel Kolev wrote: after some upgrades of my perl modules: [EMAIL PROTECTED]:~/progs/MyApp$script/myapp_server.pl /usr/bin/perl: symbol lookup error: /usr/local/lib/perl/5.8.8/auto/Cwd/Cwd.so: undefined symbol: strlcpy This bug bit Andreas' smoker also. I don't know of the fix yet, but I'll reply to this message if I find anything. (The dist in question is PathTools; try downgrading that.) Regards, Jonathan Rockway I just got bit by the same thing when I installed HTML::Template and its dependencies on my file server. A cron job that runs mrtg started kicking out the error every five minutes. A web search finds this: http://rt.cpan.org/Public/Bug/Display.html?id=32296 part of which recommends (as one solution) downgrading PathTools to v3.25*. And of course you can get it here: http://search.cpan.org/CPAN/authors/id/K/KW/KWILLIAMS/PathTools-3.2501.tar.gz That fixes it. Cheers, -- Bob McClure, Jr. Bobcat Open Systems, Inc. [EMAIL PROTECTED] http://www.bobcatos.com Make sure that nobody pays back wrong for wrong, but always try to be kind to each other and to everyone else. 1 Thessalonians 5:15 (NIV) ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] Help with Cwd Error
Thanks, Dave. This helps PathTools-3.26_01http://search.cpan.org/%7Ekwilliams/PathTools-3.26_01/ 2008/1/16, Dave Rolsky [EMAIL PROTECTED]: On Wed, 16 Jan 2008, Jonathan Rockway wrote: On Wed, 2008-01-16 at 20:41 +0200, Angel Kolev wrote: after some upgrades of my perl modules: [EMAIL PROTECTED]:~/progs/MyApp$script/myapp_server.pl /usr/bin/perl: symbol lookup error: /usr/local/lib/perl/5.8.8/auto/Cwd/Cwd.so: undefined symbol: strlcpy This bug bit Andreas' smoker also. I don't know of the fix yet, but I'll reply to this message if I find anything. (The dist in question is PathTools; try downgrading that.) There's a fixed version of PathTools on CPAN (3.26_01 IIRC). -dave /*=== VegGuide.Orgwww.BookIRead.com Your guide to all that's veg. My book blog ===*/ ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/ ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
[Catalyst] Re: Development environments and performance
DR == Dave Rolsky [EMAIL PROTECTED] writes: DR I'm thinking that a sane budget is $2,500 per developer machine DR (with monitor). Is that unreasonable? Do you really need to save a DR few hundred bucks on ram? it's not so much that it's unreasonable (though the extra $700 apple charges for 4 instead of 2 GB certainly is) as unnecessary. actually, the at least part made me chuckle. i've honestly never felt constrained by 2 GB, but whatever. i'd have to disagree. if you have a bunch of junior developers writing code, a shared (to some extent) development environment can aid in enforcing good development habits. DR This is what automation was invented for. At several past positions, DR I've set things up so that development consisted of checking out the DR source and running a set up my dev env script that created/updated DR the database, inserted test data, set up any servers needed, etc. so resources should not be shared in a development environment at all? everyone gets their own oracle server *instance* (not database)? it's one thing to crank up a new database and slap in a schema, something else entirely to maintain a separate instance of oracle. i've seen grown men cry trying to install it (and get the instantclient libs, tnsnames.ora, c working). DR That said, I think good developers should have some minimal sysadmin DR skills, and should be comfortable setting up a DBMS or LDAP server on DR their own machine, and difficult installations can be scripted. that's naive. not that i don't agree (i do, very much so). the sad reality is that we're having a difficult enough time finding developers (for a $75k/year, 2-4 years experience position) who can even discuss what LDAP is, never mind try to configure it. maybe everyone in your shop is a reasonable sysadmin, but that's not what i've seen. my suspicion is that in shops with poor shared development environments, the systems administration is more to blame for the suitability issues than the fact that the environment is shared. DR Well, not if there's a _resource_ issue. If, as J Rockway described, DR you have 40 people sharing one machine, you're probably screwed no DR matter how good your sysadmins are. of course you're right, but a good sysadmin wouldn't try to put 40 people on one machine. and i wouldn't say that machine equals environment. whenever possible it's nice to develop (yes, actually develop, not just test) on an environment similiar to what production looks like. if that's distributed fast CGI across more than one machine, having developer access to a similiar environment will save on having unplesant surprises later. catalyst allows for a particularly nice sandbox though, using the devlopment httpd. we're having a lot of luck providing a (robust, but not 4GB per devloper!) shared dev/sandbox environment with each of 8 or so developers running a dev httpd. we then releasing code to integration for regression testing. i'm certainly not seeing the performance problems that have been reported on this list. DR Presumably that depends on how many devs you have. However, I'd be DR going nuts if I had to deal with other devs changing the database DR schema, or even just changing the state of the data while I'm trying DR to develop against it. presently, development (database and LDAP) schema changes are managed by the release manager (which makes sense if the changes are going to end up in integration, test, and production). developers have access to their own copies of the schema and data that can be refreshed at their leisure, but DBA services are provided centrally, so backups (and restores) just happen on sandbox databases. DR I stand by my position that any place not providing individual DR environments is backwards. and i'd maintain that i've seen very successful setups that provided centralized services for development. i wouldn't advocate that everyone try to share a working directory, or a database, or an apache instance, but having decent administrators provide a reliable and consistent dev environment has benefited us in a number of ways: -- code that's been tested by the developer in development will almost always run in integration because the versions of the libraries are consistent. furthermore, there's a good understanding of what's required to deploy code that's been written against the development environment. less so when people tell me that it runs on my machine, i don't konw why it doesn't run in integration. -- experienced developers new to the environment waste almost no time trying to futz around getting all the working parts configured correctly. we run a setup script and volia, their databases, ldap instances, apache sandbox, SSO configuration, firewall configuration, c. are complete and correct. when upgrades are done to any of the software, these are mostly transparent to the
Re: [Catalyst] Documentation on DBIx Class
On Wed, Jan 16, 2008 at 08:54:35AM +0100, Peter Sørensen wrote: Hi, I've been using perls for years and when dealing with web - CGI and DBI. Now I've come across Catalyst and DBIx. This is fantastic. Now I can get back to the code I've written and actually understand what I wrote 2 weeks back :-) I need some advice on where to look for documentation specially the DBIx Class and which methods I can use in here along with Catalyst. http://search.cpan.org/dist/DBIx-Class/ http://search.cpan.org/perldoc?Catalyst::Model::DBIC::Schema There's no 'which methods I can use', Model::DBIC::Schema exposes your (Catalyst-independent) DBIx::Class::Schema fairly directly so anything you can do with DBIC outside of Catalyst you can do inside, too. Note also that DBIx::Class is a separate project with its own list you can ask questions on, and 'DBIx' is the namespace for DBI extensions, of which there are lots, so just saying 'DBIx' when you mean DBIx::Class is wrong (and will potentially confuse people :) -- Matt S Trout Need help with your Catalyst or DBIx::Class project? Technical Directorhttp://www.shadowcat.co.uk/catalyst/ Shadowcat Systems Ltd. Want a managed development or deployment platform? http://chainsawblues.vox.com/http://www.shadowcat.co.uk/servers/ ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
Re: [Catalyst] PostgreSQL quoting issues
On Wed, Jan 16, 2008 at 03:17:58PM +0100, Marius Kjeldahl wrote:
I've got an application where I do the following:
# Look up last calculated transsum if it exists
my $rsts = $c-model ('MintAppDB::TransSum')-find ({
category = $c-req-param ('category'),
sentto = $c-req-param ('sentto'),
iso = $c-req-param ('iso')
});
Never use $c-req-param. You're not competent to do so without screwing
it up, and neither am I :)
$c-req-params-{category}
will, I think, turn out to be much safer all round (or better still RUN USER
INPUT THROUGH A VALIDATOR BEFORE YOU LET IT ON THE SAME SUBNET AS YOUR
PRODUCTION DATABASE DAMMIT :)
--
Matt S Trout Need help with your Catalyst or DBIx::Class project?
Technical Directorhttp://www.shadowcat.co.uk/catalyst/
Shadowcat Systems Ltd. Want a managed development or deployment platform?
http://chainsawblues.vox.com/http://www.shadowcat.co.uk/servers/
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Re: [Catalyst] Two ways to create record
On Tue, Jan 15, 2008 at 04:38:36PM +0300, Alex Povolotsky wrote: Matt S Trout wrote: Neither of these are standard DBIx::Class methods; the standard approach is to do my $obj = $rs-new(\%data); maybe use $obj-column_name($value) to set more data $obj-insert; ... I see. It does not depend on model implementation. Ok than, assume I'm using DBI connection without AutoCommit (AutoCommit is often a very bad practice). Don't do that. Turn AutoCommit on and use DBIC's txn_do method. If you leave AutoCommit off DBIC can't manage transaction depth properly and you have to handle everything manually- which is *always* a very bad practive. Also, once again there's a dbix-class list and this discussion would be more appropriate there. -- Matt S Trout Need help with your Catalyst or DBIx::Class project? Technical Directorhttp://www.shadowcat.co.uk/catalyst/ Shadowcat Systems Ltd. Want a managed development or deployment platform? http://chainsawblues.vox.com/http://www.shadowcat.co.uk/servers/ ___ List: Catalyst@lists.scsys.co.uk Listinfo: http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst Searchable archive: http://www.mail-archive.com/catalyst@lists.scsys.co.uk/ Dev site: http://dev.catalyst.perl.org/
[Catalyst] Problem with TT view and form.field
Hi,
I am trying to get hold of the Template Toolkit views.
If I make a .tt2 file like
[% form.render %]
all form fields are showing up - OK.
Now I want do my own layout and as I understood the DOCS all
fields are saved in a hash field or array fields.
All my fields are defined in a .fb file
If I do:
[% FOREACH field IN form.fields %]
tr
td[% field.label %]/td
td[% field.name %]/td
td[% field.field %]/td
/tr
[% END %]
The output is OK but as I understood the docs it should also
be possible to access this directly.
[% fields %] - List of fields
[% field %] - Hash of fields (for lookup by name)
Lets say I have a field named
firstname then it should be possible to do:
[% form.fields.firstname.label %]
BUT NOTHING SHOWS UP.
I have tried to create a testhash in the controller like:
my %testhash;
$testhash{firstname} = myname;
$c-stash-{testhash} = \%testhash;
and I have no problem using:
[% testhash.firstname %]
in the .tt2 file
What am i missing or what have I overlooked??
Regards
Peter Sørensen/University of Southern Denmark/email: [EMAIL PROTECTED]
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