Hi.
I know it's not clean, and it is probably not what you need to do in the
long run, and I don't know a bit about HTML::Template.
But why don't you try the following, just to check :
>>>>> package Myserver::Handler;
>>>>>
>>>>> #Setup some essentials
>>>>> use strict; #strict tolerance for code
>>>>> use Carp; #debugging
>>>>> use diagnostics; #more debugging
>>>>> use warnings; #more debugging
>>>>> #Handler-related stuff
>>>>> use Apache2::RequestRec ();
>>>>> use Apache2::RequestIO ();
>>>>> use Apache2::Const -compile => qw(OK);
>>>>> use HTML::Template;
>>>>>
>>>>> sub handler {
>>>>> my $self = shift;
>>>>> $self->content_type('text/html');
>>>>>
>>>>> my $template = HTML::Template->new(
>>>>> filename => '/home/Perl/tmpl/mainpage.tmpl',
>>>>> cache => 1,
>>>>> debug => 1,
>>>>> stack_debug => 1 );
>>>>> print $template->output;
>>>>>
>>>>> # Obligatory stuff for the handler
>>>>> return Apache2::Const::OK;
>>>>>
>>>>> }
André
xyon wrote:
Good suggestion, I moved the content_type to the top of the handler
routine in Handler.pm, so it now looks like:
-------------------------------------------------------------------
sub handler {
my $self = shift;
$self->content_type('text/html');
my $view = Myserver::View->new();
$view->mainpage;
# Obligatory stuff for the handler
return Apache2::Const::OK;
}
-------------------------------------------------------------------
I am still getting a blank page, though. Here is the latest lwp-request
output:
-------------------------------------------------------------------
$ lwp-request -s -U -S -e -m GET "http://localhost/admin/";
GET http://localhost/admin/
User-Agent: lwp-request/2.07
GET http://localhost/admin/ --> 200 OK
Connection: close
Date: Thu, 13 Mar 2008 15:45:08 GMT
Server: Apache
Content-Length: 0
Content-Type: text/html; charset=UTF-8
Client-Date: Thu, 13 Mar 2008 15:45:09 GMT
Client-Peer: 127.0.0.1:80
Client-Response-Num: 1
-------------------------------------------------------------------
On Thu, 2008-03-13 at 16:38 +0100, André Warnier wrote:
Hi.
First, don't take my suggestions as gospel, I don't know the TT2 and do
not really know how you're supposed to work with it.
But it seems to me that this is in the wrong order :
$view->mainpage;
$self->content_type('text/html');
I think you should trigger the HTTP header before you generate the
content. Now, whether that is the reason of your current problem or
not, I haven't a clue.
But I'm trying, and I'm really interested, because I am starting to want
to know more about TT2 (and Catalyst) these days. So your
"from-the-very beginning" approach is also very helpful to me.
(And I do have a certain experience of Apache2/mod_perl2)
And, re-check your lwp-request switches, you might have disabled the
display of the response content (remove the -d).
André
xyon wrote:
Thanks for the reply.
I thought as you did (that there were too many "Content-Type"
definitions), so commented out this line in the View.pm module, but that
doesn't seem to have changed anything:
'print "Content-Type: text/html\n\n";'
Here is the lwp command and output:
-------------------------------------------------------------------
$ lwp-request -e -S -s -U -m GET -Sed "http://localhost/admin/";
GET http://localhost/admin/
User-Agent: lwp-request/2.07
GET http://localhost/admin/ --> 200 OK
Connection: close
Date: Thu, 13 Mar 2008 15:24:23 GMT
Server: Apache
Content-Length: 0
Content-Type: text/html; charset=UTF-8
Client-Date: Thu, 13 Mar 2008 15:24:23 GMT
Client-Peer: 127.0.0.1:80
Client-Response-Num: 1
-------------------------------------------------------------------
On Thu, 2008-03-13 at 16:11 +0100, André Warnier wrote:
Hi.
First, a small disgression : along with perl, comes a beautiful test
tool for HTTP stuff, called "lwp-request".
Like, at the command-line :
lwp-request (to see the options)
lwp-request -m GET -Sed "http://myserver/myURL";
(that will show you what you get as a response, without a browser
getting in the way)
Then, below, are you not now sending one "Content-type" too many ?
It looks like you are doing it once in handler(), and once in mainpage().
André
xyon wrote:
That worked great with the test script ( print $template->output; ), but
unfortunately, I'm having trouble getting the display onto a web page
(via the Handler). The resulting web page is blank, with no source.
Below are my Apache configs for the handler, logs, and the handler and
view module's latest code. I've also included the test script code, just
in case there is some obvious reason it would work and the handler
won't.
Apache config:
----------------------------------------------------
PerlRequire /etc/httpd/perl/startup.pl
<Location /admin>
SetHandler modperl
PerlResponseHandler Myserver::Handler
</Location>
----------------------------------------------------
/etc/httpd/perl/startup.pl:
----------------------------------------------------
use lib qw(/home/Perl/);
1;
----------------------------------------------------
Apache log:
----------------------------------------------------
==> /var/log/httpd/error_log <==
### HTML::Template Debug ### In _parse:
### HTML::Template _param Stack Dump ###
$VAR1 = [
\'<html><body bgcolor="#FF00FF">Test!</body></html>
'
];
### HTML::Template Debug ### In output
### HTML::Template output Stack Dump ###
$VAR1 = [
\'<html><body bgcolor="#FF00FF">Test!</body></html>
'
];
==> /var/log/httpd/ssl_request_log <==
[13/Mar/2008:10:48:38 -0400] 10.5.5.5 TLSv1 DHE-RSA-AES256-SHA
"GET /admin/ HTTP/1.1" -
==> /var/log/httpd/ssl_access_log <==
10.5.5.5 - - [13/Mar/2008:10:48:38 -0400] "GET /admin/ HTTP/1.1" 200 -
----------------------------------------------------
/home/Perl/Myserver/Handler.pm
----------------------------------------------------
package Myserver::Handler;
#Setup some essentials
use strict; #strict tolerance for code
use Carp; #debugging
use diagnostics; #more debugging
use warnings; #more debugging
#Handler-related stuff
use Apache2::RequestRec ();
use Apache2::RequestIO ();
use Apache2::Const -compile => qw(OK);
sub handler {
my $self = shift;
my $view = Myserver::View->new();
$view->mainpage;
# Obligatory stuff for the handler
$self->content_type('text/html');
return Apache2::Const::OK;
}
1;
----------------------------------------------------
/home/Perl/Myserver/View.pm:
----------------------------------------------------
package Myserver::View;
#Setup some essentials
use strict; #strict tolerance for code
use Carp; #debugging
use diagnostics; #more debugging
use warnings; #more debugging
#Loadup some needed functions
use HTML::Template;
sub new {
my $self = shift;
return $self;
}
sub mainpage {
my $self = shift;
my $template = HTML::Template->new(
filename => '/home/Perl/tmpl/mainpage.tmpl',
cache => 1,
debug => 1,
stack_debug => 1 );
print "Content-Type: text/html\n\n";
print $template->output;
return $self;
}
1;
----------------------------------------------------
/home/Perl/tmpl/mainpage.tmpl:
----------------------------------------------------
<html><body bgcolor="#FF00FF">Test!</body></html>
----------------------------------------------------
/home/Perl/tests/View_mainpage.pl
----------------------------------------------------
#!/usr/bin/perl -w
# Test printing of the main page
print "Main Page..";
#Let's load the view module
use lib "../";
use Myserver::View;
#Now let's load some things that are very handy
use strict; #strict tolerance for code
use Carp; #debugging
use warnings; #more debugging
use diagnostics; #even more debugging
# Let's create an object
my $view = Myserver::View->new;
# Now, let's tell View to display the main page
$view->mainpage;
print ".OK";
1;
----------------------------------------------------
On Thu, 2008-03-13 at 13:29 +0800, Foo JH wrote:
try print $template->output;
You forgot the print();
xyon wrote:
Hey everyone,
Firstly, I apologize I sent the previous email under an incorrect subject line.
I am working on my first Object-Oriented project, and have hit a slight
snag. I am using HTML::Template to output within the View module, but it
never outputs. I don't see any errors in the logs, I just get a blank
page. Below is pertinent information including a test script with its
output:
OS Info:
----------------------------------------------------
CentOS release 4.6 (Final)
----------------------------------------------------
Package info:
----------------------------------------------------
perl-5.8.8-11
perl-HTML-Template-2.9-1
httpd-2.0.59-1.el4s1.10.el4.centos
mod_perl-2.0.3-1.el4s1.3
----------------------------------------------------
/home/perl/Myserver/View.pm
----------------------------------------------------
package Myserver::View;
#Setup some essentials
use strict; #strict tolerance for code
use Carp; #debugging
use diagnostics; #more debugging
use warnings; #more debugging
#Loadup some needed functions
use HTML::Template;
sub new {
my $self = shift;
return $self;
}
sub mainpage {
my $self = shift;
my $template = HTML::Template->new( filename =>
'/home/Perl/tmpl/mainpage.tmpl',
cache => 1,
debug => 1,
stack_debug => 1 );
print "Content-Type: text/html\n\n";
$template->output;
return $self;
}
1;
----------------------------------------------------
/home/Perl/tests/View_mainpage.pl
----------------------------------------------------
#!/usr/bin/perl -w
# Test printing of the main page
print "Main Page..";
#Let's load the view module
use lib "../";
use Myserver::View;
#Now let's load some things that are very handy
use strict; #strict tolerance for code
use Carp; #debugging
use warnings; #more debugging
use diagnostics; #even more debugging
# Let's create an object
my $view = Myserver::View->new;
# Now, let's tell View to display the main page
$view->mainpage;
print ".OK";
1;
----------------------------------------------------
/home/Perl/tmpl/mainpage.tmpl:
----------------------------------------------------
<html><body bgcolor="#FF00FF">Test!</body></html>
----------------------------------------------------
Output with debugging on (as above):
----------------------------------------------------
$ tests/View_mainpage.pl
### HTML::Template Debug ### In _parse:
### HTML::Template _param Stack Dump ###
$VAR1 = [
\'<html><body bgcolor="#FF00FF">Test!</body></html>
'
];
Main Page..Content-Type: text/html
### HTML::Template Debug ### In output
### HTML::Template output Stack Dump ###
$VAR1 = [
\'<html><body bgcolor="#FF00FF">Test!</body></html>
'
];
.OK
----------------------------------------------------
Output without debugging:
----------------------------------------------------
$ tests/View_mainpage.pl
Main Page..Content-Type: text/html
.OK
----------------------------------------------------
