This is the revised question and code, many thanks go to
jepri for all the changes, and the obvious mistake I made (didn't
use strict;) anyways, on to the real question, but first a little background.
I am creating a simple news database program that saves to a DBM style database, and can add entries into it, using hashes. I am also using HTML::Template for the first real time to seperate the code from the HTML. My question is, how can I have this code snippet display all of the database entries in a table?
Also a second question I have about implementing this type of code, is: how can I display all the entries in a form where each of the contents of each hash row is seperated ... like by using split? Thanks for any help!
note:I have not added the file lock yet, but that will be added before I actually use this code in a bigger project later. I am sure that there is a lot of the program that could be much more efficient than it is, if so, please let me know, so I can learn and fix it! Thanks again.
Here is the first file, the actual code file (
news.pl):
#!/usr/bin/perl -w
use strict;
use HTML::Template;
use CGI qw (:standard);
use CGI::Carp qw(fatalsToBrowser);
use DB_File;
my @fields = ("title","date","author","news");
my $q = new CGI;
print $q->header;
my $template = HTML::Template->new(filename => 'news.tmpl');
my $filename="database.db";
tie(my %hash, "DB_File", $filename) or die "Can't open $filename: $!";
#add(); Temporarily not used.
my @loop_data = (); # initialize an array to hold your loop
my @keys = ();
my @values = ();
while ((my $key, my $value) = each my %hash) {
push(@keys, $key);
push(@values, $value);
}
while (@keys and @values) {
my %row_data;
$row_data{KEY} = shift @keys;
$row_data{VALUE} = shift @values;
push(@loop_data, \%row_data);
}
#delete(); Temporarily not used.
untie %hash;
$template->param(
SHOW_ALL_LOOP => \@loop_data);
print $template->output;
sub add {
my $key = time();
my $record = $key;
foreach my $field(@fields){
$record .= "\|$field";
}
$hash{$key} = "$record";
}
sub delete {
%hash = ();
}
And here is the HTML Template file for the code (
news.tmpl):
<html>
<head><title>News</title></head>
<body bgcolor=#eeeeee>
<center>
<TMPL_LOOP NAME="SHOW_ALL_LOOP">
<table width=400 border=1 cellspacing=0 cellpadding=0>
<tr><td valign=top bgcolor=#dddddd>
<b>Key</b>:<TMPL_VAR NAME="KEY"><br>
<b>Value</b>:<TMPL_VAR NAME="VALUE"><br><br>
</td></tr>
</table><br>
</TMPL_LOOP>
</center>
</body>
</html>
That should be all you need to check this program. By the way, this is not a homework question, this is a question that I would like to figure out how to do this sort of program correctly, because last summer I created a web framework news type of thing, but it sucked, and I am hoping this will be better overall than my last project. The old project's site page is at www.hashes.f2s.com ... but it is terrible ^_- so don't see it.
Andy Summers
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