Hi ... it's been a while since I have frequented the monastery ^^; but I have finally had time to work on a new project. 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? 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 HTML::Template;
use CGI qw (:standard);
use CGI::Carp qw(fatalsToBrowser);
use DB_File;

@fields = ("title","date","author","news");
$q = new CGI;
print $q->header;

my $template = HTML::Template->new(filename => 'news.tmpl');

$filename="database.db";
tie(%hash, "DB_File", $filename) or die "Can't open $filename: $!";

#add();

my @loop_data = ();  # initialize an array to hold your loop
my @keys = ();
my @values = ();

get_values();
sub get_values {
while (($key,$value) = each %hash) {
  push(@keys, $key);
  push(@values, $value);
}
}

while (@keys and @values) {
  my %row_data;  # get a fresh hash for the row data
  
# fill in this row
  $row_data{KEY} = shift @keys;
  $row_data{VALUE} = shift @values;

  # the crucial step - push a reference to this row into the loop!
  push(@loop_data, \%row_data);
}

my @newfields = ();
foreach $field (@fields){
  push(@newfields, $field);
}
while (@newfields) {
  get_values();
  my %nf_row_data;
  $nf_row_data{FIELD} = shift @newfields;
  push(@field_data, \%nf_row_data);
}

#delete();
untie %hash;

$template->param(
    SHOW_ALL_LOOP => \@loop_data,
    FIELD_LOOP => \@field_data);

print $template->output;

sub add {
  $key = time();
  $record = $key;
  foreach $field(@fields){
    $record  .= "\|$field";
  }
  $hash{$key}  = "$record";
}

sub delete {
  %hash = ();
}

[download]


And here is the HTML Template file for the code (news.tmpl):
<html>
<head><title>news.tmpl</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>

<table border=1 cellspacing=0 cellpadding=0>
<tr>
<TMPL_LOOP NAME="FIELD_LOOP">
  <td><TMPL_VAR NAME="FIELD"></td>
</TMPL_LOOP>
</tr>
</table>

</center>
</body>
</html>

[download]


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

Edit Petruchio Sat Dec 29 03:17:53 UTC 2001 - Added READMORE tag.

In reply to How can I display DBM entries in an HTML table? by bladx

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