Gossamer Forum
Home : Products : Links 2.0 : Customization :

Newest Entry To Top

Quote Reply
Newest Entry To Top
hi - I hope you can help.

I'm trying to get my latest entries to be at the top of the first page in a category. Is this possible?

any ideas what I might be doing wrong?


like here -
http://www.creativeireland.com/jobdesk/pages/jobs_offered/graphics/index.shtml

I can't figure out how to get latest entries to top of page.

Been trying to get this sorted for absolutely ages. Hope you can help.
Quote Reply
Re: [davidarthurs2] Newest Entry To Top In reply to
If I'm not mistaken this should happen automatically. Have you set "Number of days a link is considered New." in links.cfg?
Quote Reply
Re: [MJB] Newest Entry To Top In reply to
I have this -

Code:
# Setting for popular cutoff, can either be a percent (i.e. top 3%), or
# a fixed value (i.e. top 10). Enter 0.03 or 10 respectively.
$db_popular_cutoff = 0.03; # Top 3%
# Number of days a link is considered New.
$db_new_cutoff = 14; # 14 days old.

if new entries are validated and re-built it doesn't put them at the top of page 1.
Quote Reply
Re: [davidarthurs2] Newest Entry To Top In reply to
Have you made any changes to the sort routine in db_utils.pl?


Leonard
aka PerlFlunkie
Quote Reply
Re: [PerlFlunkie] Newest Entry To Top In reply to
here's db_utils -

Code:
sub get_record {
# --------------------------------------------------------
# Given an ID as input, get_record returns a hash of the
# requested record or undefined if not found.

my ($key, $found, @data, $field);
$key = shift; $found = 0;

open (DB, "<$db_file_name") or &cgierr("error in get_records. unable to open db file: $db_file_name.\nReason: $!");
if ($db_use_flock) { flock(DB, 1); }
LINE: while (<DB>) {
(/^#/) and next LINE;
(/^\s*$/) and next LINE;
chomp;
@data = &split_decode($_);
if ($data[$db_key_pos] eq $key) {
$found = 1;
%rec = &array_to_hash (0, @data);
last LINE;
}
}
close DB;
$found ? (return %rec) : (return undef);
}

sub menu {
# --------------------------------------------------------
#
my (%c, @fields);
open (DB, "<$db_category_name") or &cgierr("unable to open $db_file_name. Reason: $!");
if ($db_use_flock) { flock(DB, 1); }
LINE: while (<DB>) {
(/^#/) and next LINE;
(/^\s*$/) and next LINE;
@fields = &split_decode ($_);
$c{$fields[$db_main_category]}++;
}
close DB;
foreach $field (sort keys %c) {
unless ($field =~ m?/([^"]+)?) {
$field2 = &build_clean($1);
$field2 =~ /^.+\_/;
$category_list .= qq|<a href= "$build_root_url/$field">$field2</a>|;
}
}
return $category_list;
}



sub get_defaults {
# --------------------------------------------------------
# Returns a hash of the defaults used for a new record.

my %default;

foreach $field (keys %db_defaults) {
$db_defaults{$field} =~ /^\s*$/ and ($default{$field} = $in{$field}) and next;
(ref $db_defaults{$field} eq 'CODE') ?
($default{$field} = &{$db_defaults{$field}}) : ($default{$field} = $db_defaults{$field});
}
if ($db_key_track) {
open (ID, "<$db_id_file_name") or &cgierr("error in get_defaults. unable to open id file: $db_id_file_name.\nReason: $!");
if ($db_use_flock) { flock(ID, 1); }
$default{$db_key} = <ID> + 1; # Get next ID number
close ID;
}
return %default;
}

sub validate_record {
# --------------------------------------------------------
# Verifies that the information passed through the form and stored
# in %in matches a valid record. It checks first to see that if
# we are adding, that a duplicate ID key does not exist. It then
# checks to see that fields specified as not null are indeed not null,
# finally it checks against the reg expression given in the database
# definition.
#
my ($col, @input_err, $errstr, $err, $line, @lines, @data);
my (%rec) = @_;

if ($rec{'add_record'}) { # don't need to worry about duplicate key if modifying
open (DB, "<$db_file_name") or &cgierr("error in validate_records. unable to open db file: $db_file_name.\nReason: $!");
if ($db_use_flock) { flock(DB, 1); }
LINE: while (<DB>) {
(/^#/) and next LINE;
(/^\s*$/) and next LINE;
chomp;
@data = &split_decode($_);
($data[$db_key_pos] eq $rec{$db_key}) and return "duplicate key error";
}
close DB;
}
foreach $col (@db_cols) {
if ($rec{$col} =~ /^\s*$/) { # entry is null or only whitespace
($db_not_null{$col}) and # entry is not allowed to be null.
push(@input_err, "$col (Can not be left blank)"); # so let's add it as an error
}
else { # else entry is not null.
($db_valid_types{$col} && !($rec{$col} =~ /$db_valid_types{$col}/)) and
push(@input_err, "$col (Invalid format)"); # but has failed validation.
(length($rec{$col}) > $db_lengths{$col}) and
push (@input_err, "$col (Too long. Max length: $db_lengths{$col})");
if ($db_sort{$col} eq "date") {
push (@input_err, "$col (Invalid date format)") unless &date_to_unix($rec{$col});
}
}
}
if ($#input_err+1 > 0) { # since there are errors, let's build
foreach $err (@input_err) { # a string listing the errors
$errstr .= "<li>$err"; # and return it.
}
return "<ul>$errstr</ul>";
}
else {
return "ok"; # no errors, return ok.
}
}

sub build_email_list {
# --------------------------------------------------------
# Build a list of all subscribers to mail to.
#
my ($name, $email, $output);
$output = qq~<select name="mailto" multiple size=5>~;

open (DB, "<$db_email_name ") or &cgierr("unable to open db file: $db_email_name .\nReason: $!");
if ($db_use_flock) { flock(DB, 1); }
LINE: while (<DB>) {
(/^#/) and next LINE;
(/^\s*$/) and next LINE;
chomp;
($email, $name) = split /\Q$db_delim\E/;
$output .= "<option selected>$email</option>\n";
}
$output .= "</select>";
close DB;
return $output;
}

sub build_new_links {
# --------------------------------------------------------
# Returns a text string used in the email newsletter of all
# new links.
#
my $output = '';
my (@data, %rec);

open (DB, "<$db_file_name") or &cgierr("unable to open db file: $db_file_name.\nReason: $!");
if ($db_use_flock) { flock(DB, 1); }
LINE: while (<DB>) {
(/^#/) and next LINE;
(/^\s*$/) and next LINE;
chomp;
@data = &split_decode($_);
if ($data[$db_isnew] eq 'Yes') {
%rec = &array_to_hash(0, @data);
my $des_q = &linewrap ($rec{'Description'});
$output .= qq~
-------------------------------------------------------------------
$rec{'Title'} (added: $rec{'Date'})
$rec{'URL'}
$des_q
~;
}
}
close DB;
return $output;
}

sub build_select_field {
# --------------------------------------------------------
# Builds a SELECT field based on information found
# in the database definition.
#
my ($column, $value, $name, $mult) = @_;
my ($size, %values);

$name || ($name = $column);
$size || ($size = 1);
$db_select_fields{'Mult-Subcats'} = join (",", &category_list);

if (! exists $db_select_fields{$column}) {
$db_select_fields{$db_cols[$db_category]} = $db_select_fields{'Mult-Related'} = join (",", &category_list);
}
if ($mult) {
@fields = split (/\,/, $db_select_fields{"Mult-$column"});
%values = map { $_ => 1 } split (/\Q$db_delim\E/, $value);
}
else {
@fields = split (/\,/, $db_select_fields{$column});
$values{$value}++;
}
($#fields >= 0) or return "error building select field: no select fields specified in config for field '$column'!";

$output = qq|<SELECT NAME="$name" $mult SIZE=$size><OPTION>---|;
foreach $field (@fields) {
$values{$field} ?
($output .= "<OPTION SELECTED>$field\n") :
($output .= "<OPTION>$field");
}
$output .= "</SELECT>";
return $output;
}

sub build_select_field_from_db {
# --------------------------------------------------------
# Builds a SELECT field from the database.
#
my ($column, $value, $name) = @_;
my (@fields, $field, %selectfields, $ouptut, $fieldnum, $found);

# Make sure this is a valid field.
(grep $_ eq $column, @db_cols) or return "error building select field: no fields specified!";

$fieldnum = $db_def{$column}[0];
$name ||= $column;

# Go through the database and get each unique name in that column.
open (DB, "<$db_file_name") or &cgierr("unable to open $db_file_name. Reason: $!");
if ($db_use_flock) { flock(DB, 1); }
LINE: while (<DB>) {
/^\s*$/ and next LINE; # Skip blank lines
/^#/ and next LINE; # Comment Line
@fields = &split_decode ($_);
$selectfields{$fields[$fieldnum]}++;
}
close DB;

# Make a select list out of those names.
$output = qq|<SELECT NAME="$name"><OPTION>---|;
foreach $field (sort keys %selectfields) {
($field eq $value) ?
($output .= "<OPTION SELECTED>$field\n") :
($output .= "<OPTION>$field\n");
}
$output .= "</SELECT>\n";
return $output;
}

sub build_checkbox_field {
# --------------------------------------------------------
# Builds a CHECKBOX field based on information found
# in the database definition. Parameters are the column to build
# whether it should be checked or not and a default value (optional).

my ($column, $values, $name) = @_;

$db_checkbox_fields{$column} or return "error building checkboxes: no checkboxes specified in config for field '$column'";
$name ||= $column;

my @values = split (/\Q$db_delim\E/, $values);
my @boxes = split (/,/, $db_checkbox_fields{$column});
my ($output, $box);

foreach $box (@boxes) {
(grep $_ eq $box, @values) ?
($output .= qq!<INPUT TYPE="CHECKBOX" NAME="$name" VALUE="$box" CHECKED> $box\n!) :
($output .= qq!<INPUT TYPE="CHECKBOX" NAME="$name" VALUE="$box"> $box\n!);
}
return $output;
}

sub build_radio_field {
# --------------------------------------------------------
# Builds a RADIO Button field based on information found
# in the database definition. Parameters are the column to build
# and a default value (optional).
#
my ($column, $value, $name) = @_;
my (@buttons, $button, $output);

$db_radio_fields{$column} or return "error building radio buttons: no radio fields specified in config for field '$column'!";
$name ||= $column;

@buttons = split (/,/, $db_radio_fields{$column});

foreach $button (@buttons) {
($value eq $button) ?
($output .= qq|<INPUT TYPE="RADIO" NAME="$name" VALUE="$button" CHECKED> $button \n|) :
($output .= qq|<INPUT TYPE="RADIO" NAME="$name" VALUE="$button"> $button \n|);
}
return $output;
}

sub build_html_record {
# --------------------------------------------------------
# Builds a record based on the config information.
#
my (%rec) = @_;
my ($output, $field);

$output = "<p><table border=1 width=450>\n";
foreach $field (@db_cols) {
next if ($db_form_len{$field} == -1);
$output .= qq~
<tr><td align=right valign=top width=20%><$font>$field:</font></td>
<td width=80%><$font>$rec{$field}</font></td></tr>
~;
}
$output .= "</table></p>\n";
return $output;
}

sub build_html_record_form {
# --------------------------------------------------------
# Builds a record form based on the config information.
#
my ($output, $field, $multiple, $name);
($_[0] eq "multiple") and ($multiple = 1) and shift;
my (%rec) = @_;

$output = "<p><table border=1>";

# Go through a little hoops to only load category list when absolutely neccessary.
if ($in{'db'} eq 'links') {
exists $db_select_fields{$db_cols[$db_category]}
or ($db_select_fields{$db_cols[$db_category]} = join (",", &category_list));
}
else {
$db_select_fields{'Related'} or
($db_select_fields{'Related'} = $db_select_fields{'Mult-Related'} = join ",", &category_list);
}

foreach $field (@db_cols) {
# Set the field name to field-key if we are doing multiple forms.
$multiple ? ($name = "$field-$rec{$db_key}") : ($name = $field);
if ($db_select_fields{"Mult-$field"}) { $output .= "<tr><td align=right valign=top width=20%><$font>$field:</font></td><td width=80%>" . &build_select_field($field, $rec{$field}, $name, "MULTIPLE SIZE=3") . "</td></tr>\n"; }
elsif ($db_select_fields{$field}) { $output .= "<tr><td align=right valign=top width=20%><$font>$field:</font></td><td width=80%>" . &build_select_field($field, $rec{$field}, $name) . "</td></tr>\n"; }
elsif ($db_radio_fields{$field}) { $output .= "<tr><td align=right valign=top width=20%><$font>$field:</font></td><td width=80%>" . &build_radio_field($field, $rec{$field}, $name) . "</td></tr>\n"; }
elsif ($db_checkbox_fields{$field}) { $output .= "<tr><td align=right valign=top width=20%><$font>$field:</font></td><td width=80%>" . &build_checkbox_field ($field, $rec{$field}, $name) . "</td></tr>\n"; }
elsif ($db_form_len{$field} =~
/(\d+)x(\d+)/) { $output .= qq~<tr><td align=right valign=top width=20%><$font>$field:</font></td><td width=80%><textarea wrap="virtual" name="$name" cols="$1" rows="$2">$rec{$field}</textarea></td></tr>\n~; }
elsif ($db_form_len{$field} == -1) { $output = qq~<input type=hidden name="$field" value="$rec{$field}">\n$output~; }
else { $output .= qq~<tr><td align=right valign=top width=20%><$font>$field:</font></td><td width=80%><input type=text name="$name" value="$rec{$field}" size="$db_form_len{$field}" maxlength="$db_lengths{$field}"></td></tr>\n~; }
}
$output .= "</table></p>\n";
return $output;
}

sub category_list {
# --------------------------------------------------------
# Returns a list of all categories in the database.
#
my (%categories, @fields);

# If we've already loaded this, return it.
defined @db_category_list and return @db_category_list;

# Otherwise pull the list from the database.
open (DB, "<$db_category_name") or &cgierr("unable to open $db_file_name. Reason: $!");
if ($db_use_flock) { flock(DB, 1); }
LINE: while (<DB>) {
(/^#/) and next LINE;
(/^\s*$/) and next LINE;
@fields = &split_decode ($_);
$categories{$fields[$db_main_category]}++;
}
close DB;

# Cache the output in case we use this again.
@db_category_list = sort keys %categories;

return @db_category_list;
}

sub build_clean {
# --------------------------------------------------------
# Formats a category name for displaying.
#
my ($input) = shift;
$input =~ s/_/ /g; # Change '_' to spaces.
$input =~ s,/, : ,g; # Change '/' to ' : '.
return $input;
}

sub build_sorthit {
# --------------------------------------------------------
# This function sorts a list of links. It has been modified to sort
# new links first, then cool links, then the rest alphabetically. By modifying
# the sort function below, you can sort the links however you like (by date,
# or random, etc.).
#
my (@unsorted) = @_;
my ($num) = ($#unsorted+1) / ($#db_cols+1);
my (%sortby, %isnew, %iscool, $hit, $i, @sorted);

for ($i = 0; $i < $num; $i++) {
$sortby{$i} = $unsorted[$db_sort_links + ($i * ($#db_cols+1))];
($unsorted[$db_isnew + ($i * ($#db_cols+1))] eq "Yes") and ($isnew{$i} = 1);
($unsorted[$db_ispop + ($i * ($#db_cols+1))] eq "Yes") and ($iscool{$i} = 1);
}
foreach $hit (sort {
($isnew{$b} and !$isnew{$a}) and return 1;
($isnew{$a} and !$isnew{$b}) and return -1;
($iscool{$b} and !$iscool{$a}) and return 1;
($iscool{$a} and !$iscool{$b}) and return -1;
($isnew{$a} and $isnew{$b}) and return lc($sortby{$a}) cmp lc($sortby{$b});
($iscool{$a} and $iscool{$b}) and return lc($sortby{$a}) cmp lc($sortby{$b});
return lc($sortby{$a}) cmp lc($sortby{$b});
} (keys %sortby)) {
$first = ($hit * $#db_cols) + $hit;
$last = ($hit * $#db_cols) + $#db_cols + $hit;
push (@sorted, @unsorted[$first .. $last]);
}
return @sorted;
}

sub urlencode {
# --------------------------------------------------------
# Escapes a string to make it suitable for printing as a URL.
#
my($toencode) = shift;
$toencode =~ s/([^a-zA-Z0-9_\-.])/uc sprintf("%%%02x",ord($1))/eg;
$toencode =~ s/\%2F/\//g;
return $toencode;
}

sub get_date {
# --------------------------------------------------------
# Returns the current date.
#
my ($time) = shift;
$time ||= time();

exists $DATE_CACHE{$time} or ($DATE_CACHE{$time} = &unix_to_date($time));
return $DATE_CACHE{$time};
}

sub get_time {
# --------------------------------------------------------
# Returns the time in the format "hh-mm-ss".
#
my $time = shift;
$time ||= time();
my ($sec, $min, $hour, @junk) = localtime ($time);
($sec < 10) and ($sec = "0$sec");
($min < 10) and ($min = "0$min");
($hour < 10) and ($hour = "0$hour");

return "$hour:$min:$sec";
}

sub days_old {
# --------------------------------------------------------
# Returns the number of days from a given day to today (number of days
# old.
#
exists $DATE_CACHE{$_[0]} or ($DATE_CACHE{$_[0]} = &date_to_unix($_[0]));
return int ((time() - $DATE_CACHE{$_[0]}) / 86400);
}

sub compare_dates {
# --------------------------------------------------------
# Returns 1 if date a is greater then date b, otherwise returns 0.
#
exists $DATE_CACHE{$_[0]} or ($DATE_CACHE{$_[0]} = &date_to_unix($_[0]));
exists $DATE_CACHE{$_[1]} or ($DATE_CACHE{$_[1]} = &date_to_unix($_[1]));
return $DATE_CACHE{$_[0]} > $DATE_CACHE{$_[1]};
}

sub array_to_hash {
# --------------------------------------------------------
# Converts an array to a hash using db_cols as the field names.
#
my ($hit, @array) = @_;
my ($i);
return map { $db_cols[$i] => $array[$hit * ($#db_cols+1) + $i++] } @_;
}

sub linewrap {
# --------------------------------------------------------
# Wraps a line into 60 char chunks. Modified from code by
# Tim Gim Yee <tgy@chocobo.org>.
#
my $line = shift; defined $line or return '';
my @data = split /\t/, $line;
my $columns = 60;
my $tabstop = 1;
my $frag = '';
my $col = $columns - 1;

for (@data) {
$_ = "$frag$_";
$frag = '';
s/(.{1,$columns}$)|(.{1,$col}(?:\S\s+|-(?=\w)))|(.{$col})/
$3 ? "$3-\n" :
$2 ? "$2\n" :
(($frag = $1), '')
/ge;
$frag .= (' ' x ($tabstop - length($frag) % $tabstop));
}

local $_ = join '', @data, $frag;
s/\s+$//gm;
return $_;
}

sub load_template {
# --------------------------------------------------------
# Loads and parses a template. Expects to find as input a
# template file name, and a hash ref and optionally template text.
# If text is defined, then no file is loaded, but rather the template
# is taken from $text.
#
my ($tpl, $vars, $string) = @_;
(ref $vars eq 'HASH') or &cgierr ("Not a hash ref: $vars in load_template!");

if (!defined $db_template) {
require "$db_lib_path/Template.pm";
$db_template = new Template ( { ROOT => $db_template_path, CHECK => 0 } );
}
$db_template->clear_vars;
$db_template->load_template ($tpl, $string) or &cgierr ("Can't load template. Reason: $Template::error");
$db_template->load_vars ($vars) or &cgierr ("Can't load variables. Reason: $Template::error");
return $db_template->parse ($tpl) or &cgierr ("Can't parse template. Reason: $Template::error");
}

sub join_encode {
# --------------------------------------------------------
# Takes a hash (ususally from the form input) and builds one
# line to output into the database. It changes all occurrences
# of the database delimeter to '~~' and all newline chars to '``'.

my %hash = @_;
my ($tmp, $col, $output);

foreach $col (@db_cols) {
$tmp = $hash{$col};
$tmp =~ s/^\s+//g; # Trim leading blanks...
$tmp =~ s/\s+$//g; # Trim trailing blanks...
$tmp =~ s/\Q$db_delim\E/~~/og; # Change delimeter to ~~ symbol.
$tmp =~ s/\n/``/g; # Change newline to `` symbol.
$tmp =~ s/\r//g; # Remove Windows linefeed character.
$output .= $tmp . $db_delim; # Build Output.
}
chop $output; # remove extra delimeter.
$output .= "\n"; # add linefeed char.
return $output;
}

sub split_decode {
# --------------------------------------------------------
# Takes one line of the database as input and returns an
# array of all the values. It replaces special mark up that
# join_encode makes such as replacing the '``' symbol with a
# newline and the '~~' symbol with a database delimeter.

my ($input) = shift;
my (@array) = split (/\Q$db_delim\E/o, $input, $#db_cols+1);
foreach (@array) {
s/~~/$db_delim/g; # Retrieve Delimiter..
s/``/\n/g; # Change '' back to newlines..
}
return @array;
}

sub html_print_headers {
# --------------------------------------------------------
# Print out the headers if they haven't already been printed.
#
if (!$html_headers_printed) {
print "HTTP/1.0 200 OK\n" if ($db_iis or $nph);
print "Pragma: no-cache\n" if ($db_nocache);
print "Content-type: text/html\n\n";
$html_headers_printed = 1;
}
}

sub parse_form {
# --------------------------------------------------------
# Parses the form input and returns a hash with all the name
# value pairs. Removes any field with "---" as a value
# (as this denotes an empty SELECT field.
#
my (@pairs, %in);
my ($buffer, $pair, $name, $value);

if ($ENV{'REQUEST_METHOD'} eq 'GET') {
@pairs = split(/&/, $ENV{'QUERY_STRING'});
}
elsif ($ENV{'REQUEST_METHOD'} eq 'POST') {
read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});
@pairs = split(/&/, $buffer);
}
else {
&cgierr('You cant run this script from telnet/shell.');
}

PAIR: foreach $pair (@pairs) {
($name, $value) = split(/=/, $pair);

$name =~ tr/+/ /;
$name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;

$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;

($value eq "---") and next PAIR;
exists $in{$name} ? ($in{$name} .= "~~$value") : ($in{$name} = $value);
}
return %in;
}

sub cgierr {
# --------------------------------------------------------
# Displays any errors and prints out FORM and ENVIRONMENT
# information. Useful for debugging.
#
if (!$html_headers_printed) {
print "Content-type: text/html\n\n";
$html_headers_printed = 1;
}
print "<PRE>\n\nCGI ERROR\n==========================================\n";
$_[0] and print "Error Message : $_[0]\n";
$0 and print "Script Location : $0\n";
$] and print "Perl Version : $]\n";

print "\nForm Variables\n-------------------------------------------\n";
foreach $key (sort keys %in) {
my $space = " " x (20 - length($key));
print "$key$space: $in{$key}\n";
}
print "\nEnvironment Variables\n-------------------------------------------\n";
foreach $env (sort keys %ENV) {
my $space = " " x (20 - length($env));
print "$env$space: $ENV{$env}\n";
}
print "\n</PRE>";
exit -1;
}

1;
Quote Reply
Re: [davidarthurs2] Newest Entry To Top In reply to
your build_sorthit() routine appears okay, so that is not the issue. Not sure what the problem is yet.

...for future reference, please use the "upload attachment" function to post files rather then paste them in your message. this saves us all bandwidth and keeps posts cleaner.

Philip
------------------
Limecat is not pleased.