add a poll plugin
joey
parent
7aab2d2ac6
commit
5800d2160c
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@ -0,0 +1,160 @@
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#!/usr/bin/perl
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package IkiWiki::Plugin::poll;
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use warnings;
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use strict;
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use IkiWiki;
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use URI;
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sub import { #{{{
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hook(type => "preprocess", id => "poll", call => \&preprocess);
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hook(type => "cgi", id => "poll", call => \&cgi);
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} # }}}
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sub yesno ($) { #{{{
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my $val=shift;
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return (defined $val && lc($val) eq "yes");
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} #}}}
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my %pagenum;
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sub preprocess (@) { #{{{
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my %params=(open => "yes", total => "yes", percent => "yes", @_);
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my $open=yesno($params{open});
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my $showtotal=yesno($params{total});
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my $percent=yesno($params{percent});
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$pagenum{$params{page}}++;
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my %choices;
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my @choices;
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my $total=0;
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while (@_) {
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my $key=shift;
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my $value=shift;
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next unless $key =~ /^\d+/;
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my $num=$key;
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$key=shift;
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$value=shift;
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$choices{$key}=$num;
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push @choices, $key;
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$total+=$num;
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}
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my $ret="";
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foreach my $choice (@choices) {
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my $percent=int($choices{$choice} / $total * 100);
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if ($percent) {
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$ret.="$choice ($percent%) ";
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}
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else {
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$ret.="$choice ($choices{$choice}) ";
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}
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if ($open && exists $config{cgiurl}) {
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my $url=URI->new($config{cgiurl});
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$url->query_form(
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"do" => "poll",
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"num" => $pagenum{$params{page}},
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"page" => $params{page},
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"choice" => $choice,
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);
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$ret.="<a class=pollbutton href=\"$url\">vote</a>";
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}
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$ret.="<br />\n<hr class=poll align=left width=\"$percent%\"/>\n";
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}
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if ($showtotal) {
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$ret.="<span>Total votes: $total</span>\n";
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}
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return "<div class=poll>$ret</div>";
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} # }}}
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sub cgi ($) { #{{{
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my $cgi=shift;
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if (defined $cgi->param('do') && $cgi->param('do') eq "poll") {
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my $choice=$cgi->param('choice');
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if (! defined $choice) {
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error("no choice specified");
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}
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my $num=$cgi->param('num');
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if (! defined $num) {
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error("no num specified");
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}
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my $page=IkiWiki::possibly_foolish_untaint($cgi->param('page'));
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if (! defined $page || ! exists $pagesources{$page}) {
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error("bad page name");
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}
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# Did they vote before? If so, let them change their vote,
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# and check for dups.
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my $session=IkiWiki::cgi_getsession();
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my $choice_param="poll_choice_${page}_$num";
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my $oldchoice=$session->param($choice_param);
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if (defined $oldchoice && $oldchoice eq $choice) {
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# Same vote; no-op.
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IkiWiki::redirect($cgi, "$config{url}/".htmlpage($page));
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}
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my $content=readfile(srcfile($pagesources{$page}));
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# Now parse the content, find the right poll,
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# and find the choice within it, and increment its number.
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# If they voted before, decrement that one.
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my $edit=sub {
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my $escape=shift;
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my $params=shift;
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return "\\[[poll $params]]" if $escape;
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return $params unless --$num == 0;
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my @bits=split(' ', $params);
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my @ret;
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while (@bits) {
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my $n=shift @bits;
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if ($n=~/=/) {
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# val=param setting
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push @ret, $n;
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next;
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}
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my $c=shift @bits;
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$c=~s/^"(.*)"/$1/g;
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next unless defined $n && defined $c;
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if ($c eq $choice) {
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$n++;
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}
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if (defined $oldchoice && $c eq $oldchoice) {
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$n--;
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}
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push @ret, $n, "\"$c\"";
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}
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return "[[poll ".join(" ", @ret)."]]";
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};
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$content =~ s{(\\?)\[\[poll\s+([^]]+)\s*\]\]}{$edit->($1, $2)}seg;
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# Store their vote, update the page, and redirect to it.
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writefile($pagesources{$page}, $config{srcdir}, $content);
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$session->param($choice_param, $choice);
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IkiWiki::cgi_savesession($session);
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$oldchoice=$session->param($choice_param);
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if ($config{rcs}) {
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# prevent deadlock with post-commit hook
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IkiWiki::unlockwiki();
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IkiWiki::rcs_commit($pagesources{$page}, "poll vote",
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IkiWiki::rcs_prepedit($pagesources{$page}),
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$session->param("name"), $ENV{REMOTE_ADDR});
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}
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else {
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require IkiWiki::Render;
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IkiWiki::refresh();
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IkiWiki::saveindex();
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}
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# Need to set cookie in same http response that does the
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# redir.
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eval q{use CGI::Cookie};
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error($@) if $@;
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my $cookie = CGI::Cookie->new(-name=> $session->name, -value=> $session->id);
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print $cgi->redirect(-cookie => $cookie,
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-url => "$config{url}/".htmlpage($page));
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exit;
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}
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} #}}}
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1
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@ -206,6 +206,19 @@ li.L8 {
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list-style: upper-alpha;
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}
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hr.poll {
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height: 10pt;
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color: white !important;
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background: #eee;
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border: 2px solid black;
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}
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div.poll {
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margin-top: 1ex;
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margin-bottom: 1ex;
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padding: 1ex 1ex;
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border: 1px solid #aaa;
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}
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input#openid_url {
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background: url(http://openid.net/login-bg.gif) no-repeat;
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background-color: #fff;
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@ -44,8 +44,10 @@ ikiwiki (1.34) UNRELEASED; urgency=low
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and their IP address, and needs to construct its own commit message
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containing them, or do something more appropriate for the given RCS.
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* Add softwaresite example.
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* Add a poll plugin.
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* Add quick mode for archive page generation.
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-- Joey Hess <joeyh@debian.org> Wed, 22 Nov 2006 09:59:12 -0500
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-- Joey Hess <joeyh@debian.org> Thu, 23 Nov 2006 17:13:32 -0500
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ikiwiki (1.33) unstable; urgency=low
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@ -0,0 +1,24 @@
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[[template id=plugin name=poll included=1 author="[[Joey]]"]]
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[[tag type/useful]]
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This plugin allows you to create online polls in the wiki. Here's an
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example use:
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\[[poll 0 "red" 0 "green" 0 "blue"]]
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The numbers indicate how many users voted for that choice. When a user
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votes for a choice in the poll, the page is modified and the number
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incremented.
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While some basic precautions are taken to prevent users from accidentially
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voting twice, this sort of poll is should not be counted on the be very
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accurate; all the usual concerns about web based polling apply. Unless the
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page that the poll is in is locked, users can even edit the page and change
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the numbers!
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Parameters:
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* `open` - Whether voting is still open. Set to "no" to close the poll to
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voting.
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* `total` - Show total number of votes at bottom of poll. Default is "yes".
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* `percent` - Whether to display percents. Default is "yes".
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