Re: Site Host Providers that Support mod_perl?
On Thu, 7 Mar 2002, Fran Fabrizio wrote: My ideal setup would be to be able to colocate one of my servers and just use the ISP's bandwidth, but those plans are all pretty pricey. So, I'd really like to have a good ISP that supports mod_perl that I can afford because I'd enjoy being able to play around and create sites that use mod_perl outside of work. Of course, I can do it at home, but it's not the best place to host a web app, it'd have an audience of one. =) If you had something like Speakeasy DSL or a similar provider that allows you to run your own servers, you can run a server out of your house and use mod_perl and have fun. -- Brett http://www.chapelperilous.net/ What the scientists have in their briefcases is terrifying. -- Nikita Khrushchev
Re: statINC or startINC ??
On Fri, 1 Mar 2002, Dermot Paikkos wrote: So I guess I need to know how to make the PERL5LIB variable available to Apache from its first initialisation (would that be the startuppl or the UID of the httpd process?) I also need to make sure that this is variable persists PerlSetVar PERL5LIB path should accomplish this You can also do use lib 'path'; in your scripts to have them search the correct path to modules that aren't in INC I also use Apache::Reload See the appropriate documentation (it talks about using Apache::Reload as a drop-in for StatINC) -- Brett http://wwwchapelperilousnet/ My mother wants grandchildren, so I said, Mom, go for it! -- Sue Murphy
Re: module errors
On Thu, 7 Feb 2002, GsuLinuX wrote: we wroted a perl code to fetch some information we want from a web site. The code is as below: #!/usr/bin/perl use LWP::Simple; use HTML::Parse; snippage We have the debug error: Can't locate HTML/Parse.pm in @INC(@INC contains: /usr/lib/perl5/5.6.0/i386-linux /usr/lib/... ) at /usr/local/plesk/apache/vhosts/loop10.com/httpdocs/DDdeneme/parite2.cgi line 3 Begin Failed-compilation aborted at /usr/local/plesk/apache/vhosts/loop10.com/httpdocs/DDdeneme/parite2.cgi line 3 Are you sure you don't mean HTML::Parser (they are two differenty modules)? -- Brett http://www.chapelperilous.net/ Where do I find the time for not reading so many books? -- Karl Kraus
Re: mod_perl version for Tomcat
On Wed, 6 Feb 2002, Chuck Goehring wrote: Is there anyone out there working on a mod_perl version for Tomcat? We currently have Apache running for mod_perl and Tomcat running for a purchased servlet library. I primarily user mod_perl as a speedup for cgi programs. I need ssl capabilities and have had problems trying to get it working. Tomcat has an option for ssl from sun that may not have the issues on our platform. Why would you need mod_perl with Tomcat? You can use Tomcat with Apache using mod_jk, and get the best of both worlds. -- Brett http://www.chapelperilous.net/ What's the matter with the world? Why, there ain't but one thing wrong with every one of us -- and that's selfishness. -- The Best of Will Rogers
Re: weird problem. Lost of the POST data
On Mon, 4 Feb 2002, Oscar Serrano wrote:
some days ago I wrote to ask for this problem: The CGI.pm (sometimes) could
not receive the POST data. I tried all you recomended me here in the list.
But I still had the problem. Finally I decide to kick out CGI.pm and start
to use the old cgi-lib.pl. But I still had the same problem. Then I turnet
to Apache::Request, and since I use it, I've never had the same problem.
I just tell you because perphaps somebody may have the same problem. I
don't really understan if the problem is in mod_perl, in Apache, in Templat
Toolkit, in my ultrasecure patched kernel, in CGI.pm, but the point is that
Apache::Request seems not to loose any post data :-?
I had a similar problem a few days ago with a form processing engine I
developed with mod_perl Text::Template. It takes a sequence of states
out of a database and generates a 'wizard' to lead a user through a set of
forms for, say, an employment application, membership application, etc.
It uses a combination of CGI.pm for some of the high-level front end
stuff, and uses the Apache::* modules for the lower level stuff (cookies,
session management, etc). Anyway, I had this wierd bug that instead of
the straight sequence of forms, it would do the first form, then the
second, the the first again, then the third, then the first again, then
the fourth, and so on. POST data was either missing, or incomplete, or
was picking up values from several pages back.
I discovered what the problem was: I had a hash in one of my top-level
class files (the system is object-oriented) that was being used as a
global variable, a hash that had data that changed a lot. Bad juju with
mod_perl! Moving the hash into the class constructor and making sure it
got properly blessed into that class fixed the problem.
Another issue that can cause problems, especially using the OOP interface
to CGI.pm under mod_perl, is using a global CGI object and using it inside
of subroutines:
my $cgi = new CGI;
...
sendmail('A message');
...
sub send_mail {
my $msg = shift;
print $cgi-h1('Something');
print $cgi-p;
...
}
This will cause some wierd problems. The solution is to not use globals
inside your subroutine, but pass what you need into it:
sendmail($cgi, 'A Message');
sub send_mail {
my $q = shift;
my $msg = shift;
...
}
http://www.chapelperilous.net/
When the wind is great, bow before it;
when the wind is heavy, yield to it.
RE: email attachments; was modperl growth
On Sun, 3 Feb 2002, Jonathan M. Hollin wrote: Er, that's not strictly true. Outlook handles encrypted and/or signed email as well as any other client. Outlook displays the signed email with a unique icon to identify it as such. The attachment contains the actual PGP info (in case you want to see it). I think that's fair enough isn't it? To be fair, it showed up as an attachment in Pine under Linux also (although identified as a PGP signature). -- Brett http://www.chapelperilous.net/ You will pay for your sins. If you have already paid, please disregard this message.
Re: perl with java
On Fri, 7 Dec 2001, nookala nagaraju wrote: I'm a java programmer. I don't know anything about perl. I just want to know whether it's possible to call servlets from perl scripts after validating some data provided by the user. Thank you very much. Sure -- if you have a servlet engine, like Tomcat running. They can behave just like CGI scripts and be the action of a form. There are also some ways of calling Java directly in Perl, using the Java.pm or Inline.pm modules, but I don't think they can handle servlets. -- Brett http://www.chapelperilous.net/ Life is a concentration camp. You're stuck here and there's no way out and you can only rage impotently against your persecutors. -- Woody Allen
Re: User customisable website application?
On Thu, 6 Dec 2001, Russell Matbouli wrote: Just to clarify what I mean by customisable - the user can log in and change their colour scheme, font, ordering of components, choose a theme... The sort of thing you see on some commercial websites. There are some websites out there that are user customizable -- www.perlmonks.org, for instance, has some customizable features. It shouldn't be too difficult to do what you are shooting for, especially if you use a modular/component based architecture like Mason or AxKit. -- Brett http://www.chapelperilous.net/ Agree with them now, it will save so much time.
Re: Creating an installable web site.
On Thu, 6 Dec 2001, Luciano Miguel Ferreira Rocha wrote: * have on cd apache with mod_perl and postgresl in installable form with your data. Or have them already installed on the cd. The problem here is that the source for your entire site will have to be distributed too and available for everybody's eyes to see. You'll also have to have different apaches and postgres for every architecture your clients use, and you should configure them to use different ports than the normal ones and above 1024, so that they don't conflict with already running web servers and rdbms. Also, they will have to be configured without absolute paths, and without any creation or writting to files (the cd medium is read-only, of course). As someone who currently helps maintain and develop similar installation software for the company I work for, this is not at all a trivial problem -- we have to install *everything*, Perl, Java, Apache, database software, as well as configure networking options, make sure they get properly reflected in the Apache configuration, turn on SSL if the client wants it. You can't make any assumptions about the system you are deploying on, other than the basics like having an installed OS, a shell, and a network card. Luckily we only deply on Solaris, which makes things a little easier. Having to support multiple platforms would be a PITA, especially since we have some custom-built C++ software (not to mention some C++ classes that get used with JNI). -- Brett http://www.chapelperilous.net/ Resisting temptation is easier when you think you'll probably get another chance later on.
Re: CGI.pm 2.78 and mod_perl 1.26 troubles
On 6 Dec 2001, David Shrewsbury wrote: Solved it... apparently, if you upgrade CGI.pm while your web server is running, a restart is not good enough. You have to shutdown completely and then start it back up. yeah, especially if you're using mod_perl and have pre-loaded modules at server start up. -- Brett http://www.chapelperilous.net/ It is better to live rich than to die rich. -- Samuel Johnson
Re: ASP.NET Linux equivalent?
On Mon, 3 Dec 2001, Vsevolod Ilyushchenko wrote: Is anyone aware of a Linux product equivalent to ASP.NET from MS? Its most attractive feature is the GUI construction of Web forms and the automatic connection of their fields to a database. Since I am getting sick and tired of writing over and over the code to process user input and store it in the database, a similar product would be a huge help. (PHPLens does something similar, but it only presents data in the table format.) If you are writing the same code over and over again, that's a good sign you need to start creating modules and using those. One thing you may want to look at is Mason, which is a component based architecture for building web sites. See http://masonhq.com. But it's not point and click GUI stuff -- you still need to do some coding. -- Brett http://www.chapelperilous.net/ Poverty must have its satisfactions, else there would not be so many poor people. -- Don Herold
Re: Forking problem with mod_perl...
On Sun, 2 Dec 2001, Brian wrote: I'm writing a script that will run under mod_perl. Right now, if I disable mod_perl the script runs fine. When I turn mod_perl back on, it stops working. Here's the lowdown. Forking under mod_perl isn't a good idea. Did you read this? http://perl.apache.org/guide/performance.html#Forking_and_Executing_Subprocess -- Brett http://www.chapelperilous.net/ America may be unique in being a country which has leapt from barbarism to decadence without touching civilization. -- John O'Hara
Re: Upgrade Perl to 5.6.1and mod_perl still see 5.6.0
On Fri, 23 Nov 2001, Hans Poo wrote: I've just installed a redhat 7.2 machine. I the installed Apache::ASP using CPAN, and ended upgrading to perl 5.6.1. After restarting httpd. i noticed that mod_perl is still int he old libraries. Did you rebuild mod_perl? If not, it's still the 5.6.0 version fo the interpreter. -- Brett http://www.chapelperilous.net/ Alden's Laws: (1) Giving away baby clothes and furniture is the major cause of pregnancy. (2) Always be backlit. (3) Sit down whenever possible.
Re: IBM patents Template Systems?
On Wed, 17 Oct 2001, Ged Haywood wrote: An only slightly less casual reading indicates that anyone who writes use strict; or html isn't at risk of violating this patent. It looks to me that products like Zope or Midgard are more going to be in violation, but since they are Python and PHP based, it is of no concern. :-) -- Brett http://www.chapelperilous.net/ You know you've landed gear-up when it takes full power to taxi.
Re: Mod_perl component based architecture
On Tue, 16 Oct 2001, Gargi Bodke wrote: i have been asked to suggest an architecture to seperate the business logic from the html. how is this done in modperl? i guess by using functions for the business logic. is there any other way? There are several solutions you can explore, that are optimized for mod_perl. I personally favor Mason (http://masonhq.com), which uses a component-based architecture with some object-oriented extensions, but there are others like EmbPerl and various templating solutions that achieve similar goals. You can start here for more information (most, if not all, of these are also open source/free software): http://perl.apache.org/#appservers -- Brett http://www.chapelperilous.net/ I'm always looking for a new idea that will be more productive than its cost. -- David Rockefeller
Re: Mod_perl component based architecture
On Tue, 16 Oct 2001, Dominique Quatravaux wrote: As for the remaining of the question, I've been wondering for myself if there is a MVC (model-view-controller) framework for WWW publishing in Perl ? I gather there exist quite a few for Java, but I couldn't find anything significant under Perl. Quite a few, as the other posts in thread have already made reference to. In addition, there is also CGI::Application, which supports templating via HTML::Template and uses an MVC architecture as well. -- Brett http://www.chapelperilous.net/ Perfection is reached, not when there is no longer anything to add, but when there is no longer anything to take away. -- Antoine de Saint-Exupery
Re: Mod_perl component based architecture
On Tue, 16 Oct 2001, Michael wrote: Quite a few, as the other posts in thread have already made reference to. In addition, there is also CGI::Application, which supports templating via HTML::Template and uses an MVC architecture as well. Are any of the packages mentioned particularly suited to client content management packages where the client can manage some limeted page content text/graphics but not really mess with the overall page layout and site content. I'm about to start researching this but would like input from the experts. Mason has a content management suite, and I think Smart Worker may also have something along these lines. I can't speak for the other ones, as I have not used them. -- Brett http://www.chapelperilous.net/ Your lucky number is 3552664958674928. Watch for it everywhere.
Re: modperl/ASP and MVC design pattern
On Fri, 20 Apr 2001, Francesco Pasqualini wrote: an interesting feature of JSP is the possibility to use the MVC design pattern (INPUT/OUTPUT/LOGIC separation) This is obtained with the "forward" instruction. How the MVC design pattern can be implemented in the mod_perl (and specifically Apache::ASP) architecture ? MVC isn't dependent on any particular language, it's a top level design for your application. I have used something similar to the MVC model using just CGI.pm DBI/DBD. The basic idea is to decouple your data model from the display of that data. It's probably not textbook accurate MVC, but it borrows heavily from the architecture. I created a wrapper class for by database functionality (didn't sub-class DBI, but encapsulated it and the specifics of my data retrieval in the class). This class had hogh-level methods like $data-get_id, $data-list_ids, etc. I have used this same class with both PostgreSQL and MySQL, and the top-level interface didn't have to change, even though the underlying data structures did because of differences between PostgreSQL and MySQL (for instance, I could't use views or referential integrity contraints in MySQL). Then I created a display class that handled displaying stuff on the browser -- also encapsulating the CGI module in high-level methods like $disp-registration_form, $disp-error_page, etc. Again, here, I used this class where I had a newer version of CGI, but had to retrofit the class to a system that used an older version of CGI, so I had to recode a couple of methods using raw HTML and here docs, since the older system didn't have CGI methods available in the newer version. Finally, my top-level layer was a simple script (this wasn't a class per se) that was a 'driver' for the everything else -- I actually use a modified form of Recipe 19.12 in the Perl cookbook. I maintain state between page access through a single state variable, and have a hash that manages my data class and the display class, and the state variable is used to determine what 'page' to display, and handles top-level error handling. -- Brett http://www.chapelperilous.net/btfwk/ genealogy, n.: An account of one's descent from an ancestor who did not particularly care to trace his own. -- Ambrose Bierce
Re: Java.pm
On Tue, 10 Apr 2001, cbell wrote:
Hello everyone, has anyone had any experience with Java.pm? There
doesn't seem to be much info in the mail archives. I'm trying to access
a JAR from within perl using the Java.pm, but I always receive the
error: 'java.lang.ClassNotFoundException'. I can access the jar from a
Java script at the command line, so the problem is from within Perl
itself.
I've tried the following two methods but always end up with the same
results...
my $class = $java-java_lang_Class("forName","Test");
my $return_value =
$java-static_call("MyStaticClass","function_name",@params);
I don't know if Java.pm is capable of directly using jar files. I have
gotten it to directly use .class files with no problem. Did you try
emailing the author? I emailed him with some questions and he was very
responsive (answer in just a couple of hours). he can probably give you
the best support.
-- Brett
http://www.chapelperilous.net/btfwk/
Begathon, n.:
A multi-day event on public television, used to raise money so
you won't have to watch commercials.
Re: CGI - mod_perl 101
On Fri, 6 Apr 2001, Paul Lombardo wrote: What is the best way (Is there a reference source) to move cgi scripts to perl modules so they run under mod_perl? http://perl.apache.org/dist/cgi_to_mod_perl.html -- Brett http://www.chapelperilous.net/btfwk/ When in doubt, do it. It's much easier to apologize than to get permission. -- Grace Murray Hopper
Re: perl session management
On 27 Mar 2001, tom joseph wrote: Hello there.. Could u suggest a way to update a session variable. At present it is not possible for me to update a session variable from any other page. I thought it would be automatically updated when i do a new insertion into the session variable which in my case is a hash. Is there any other way. Could anyone please help. I am using the module Apache::Session::MYSQL. How about some code so we can see where things might not be working? -- Brett http://www.chapelperilous.net/btfwk/ The star of riches is shining upon you.
