--- loncom/interface/lonfeedback.pm 2010/12/24 23:18:57 1.290.2.7 +++ loncom/interface/lonfeedback.pm 2012/03/09 15:09:39 1.290.2.7.2.3 @@ -1,7 +1,7 @@ # The LearningOnline Network # Feedback # -# $Id: lonfeedback.pm,v 1.290.2.7 2010/12/24 23:18:57 raeburn Exp $ +# $Id: lonfeedback.pm,v 1.290.2.7.2.3 2012/03/09 15:09:39 raeburn Exp $ # # Copyright Michigan State University Board of Trustees # @@ -777,6 +777,17 @@ END return $discussion; } +sub discussion_link { + my ($ressymb,$linktext,$cmd,$item,$flag,$prev,$adds,$title) = @_; + my $link = ''; + return $link; +} + sub send_feedback_link { my ($ressymb,$target) = @_; my $output = ''. @@ -933,10 +944,22 @@ sub build_posting_display { my $skip_group_check = 0; my $symb=&Apache::lonenc::check_decrypt($ressymb); my $escsymb=&escape($ressymb); +# These are the discussion contributions my %contrib=&Apache::lonnet::restore($symb,$env{'request.course.id'}, $env{'course.'.$env{'request.course.id'}.'.domain'}, $env{'course.'.$env{'request.course.id'}.'.num'}); - +# And these are the likes/unlikes + my %likes=&Apache::lonnet::dump('disclikes', + $env{'course.'.$env{'request.course.id'}.'.domain'}, + $env{'course.'.$env{'request.course.id'}.'.num'}, + '^'.$symb.':'); + my $thisuser=$env{'user.name'}.':'.$env{'user.domain'}; +# Array with likes to figure out averages, etc. + my @theselikes=(); +# Hashes containing likes and unlikes for this user. + my %userlikes=(); + my %userunlikes=(); +# Is the user allowed to see the real name behind anonymous postings? my $see_anonymous = &Apache::lonnet::allowed('rin',$env{'request.course.id'}.($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')); @@ -966,7 +989,54 @@ sub build_posting_display { ($skiptest,$roleregexp,$secregexp,$statusregexp) = &filter_regexp($rolefilter,$sectionpick,$statusfilter); $rolematch = $roleregexp.':'.$secregexp.':'.$statusregexp; - } + } +# We need to go through this twice, first to get the likes/dislikes, then to actually build the display + for (my $id=1;$id<=$contrib{'version'};$id++) { + my $idx=$id; + next if ($contrib{$idx.':deleted'}); + next if ($contrib{$idx.':hidden'}); + unless ((($hiddens{$idx}) && (!$seeid)) || ($deletions{$idx}) || (!$contrib{$idx.':message'})) { + if ($likes{$symb.':'.$idx.':likes'} ne '') { + push(@theselikes,$likes{$symb.':'.$idx.':likes'}); + if (ref($likes{$symb.':'.$idx.':likers'}) eq 'HASH') { + if (exists($likes{$symb.':'.$idx.':likers'}{$thisuser})) { + $userlikes{$idx} = 1; + } + } + if (ref($likes{$symb.':'.$idx.':unlikers'}) eq 'HASH') { + if (exists($likes{$symb.':'.$idx.':unlikers'}{$thisuser})) { + $userunlikes{$idx} = 1; + } + } + } + } + } +# Figure out average likes and standard deviation if there are enough +# discussions to warrant that + my $ave=0; + my $stddev=10000; + if ($#theselikes>1) { + my $sum=0; + my $num=$#theselikes+1; + foreach my $thislike (@theselikes) { + $sum+=$thislike; + } + $ave=$sum/$num; + my $sumsq=0; + foreach my $thislike (@theselikes) { + $sumsq+=($thislike-$ave)*($thislike-$ave); + } + $stddev=sqrt($sumsq/$num); + } +# Now we know the average likes $ave and the standard deviation $stddev +# Get the boundaries for markup + my $oneplus=$ave+$stddev; + my $twoplus=$ave+2.*$stddev; + my $oneminus=$ave-$stddev; + my $twominus=$ave-2.*$stddev; +# +# This is now the real loop. Go through all entries, pick up what we need +# for (my $id=1;$id<=$contrib{'version'};$id++) { my $idx=$id; next if ($contrib{$idx.':deleted'}); @@ -999,7 +1069,7 @@ sub build_posting_display { } else { $$replies[$$depth[$idx]]=1; } - unless ((($hiddens{$idx}) && (!$seeid)) || ($deletions{$idx})) { + unless ((($hiddens{$idx}) && (!$seeid)) || ($deletions{$idx})) { $$visible++; if ($contrib{$idx.':history'}) { if ($contrib{$idx.':history'} =~ /:/) { @@ -1014,7 +1084,7 @@ sub build_posting_display { my %subjects = (); my %attachtxt = (); my %allattachments = (); - my ($screenname,$plainname); + my ($screenname,$plainname,$showaboutme); my $sender = &mt('Anonymous'); # Anonymous users getting number within a discussion # Since idx is in static order, this should give the same sequence every time. @@ -1024,7 +1094,7 @@ sub build_posting_display { $$anonhash{$key}=&mt('Anonymous').' '.$anoncnt; } my ($message,$subject,$vgrlink,$ctlink); - &get_post_contents(\%contrib,$idx,$seeid,$outputtarget,\%messages,\%subjects,\%allattachments,\%attachtxt,$imsfiles,\$screenname,\$plainname,$numoldver); + &get_post_contents(\%contrib,$idx,$seeid,$outputtarget,\%messages,\%subjects,\%allattachments,\%attachtxt,$imsfiles,\$screenname,\$plainname,\$showaboutme,$numoldver); # Set up for sorting by subject @@ -1054,12 +1124,18 @@ sub build_posting_display { } } if (!$contrib{$idx.':anonymous'} || $see_anonymous) { - $sender=&Apache::loncommon::aboutmewrapper( - $plainname, - $contrib{$idx.':sendername'}, - $contrib{$idx.':senderdomain'}).' ('. - $contrib{$idx.':sendername'}.':'. - $contrib{$idx.':senderdomain'}.')'; + if ($showaboutme) { + $sender = &Apache::loncommon::aboutmewrapper( + $plainname, + $contrib{$idx.':sendername'}, + $contrib{$idx.':senderdomain'}); + } else { + $sender = $plainname; + } + if ($see_anonymous) { + $sender .= ' ('.$contrib{$idx.':sendername'}.':'. + $contrib{$idx.':senderdomain'}.')'; + } $sender = ''.$sender.''; if ($contrib{$idx.':anonymous'}) { $sender.=' ['.$$anonhash{$key}.'] '. @@ -1311,8 +1387,41 @@ sub build_posting_display { $$discussionitems[$idx].='  '. $ctlink.''; } +# Figure out size based on likes + my $thislikes=$likes{$symb.':'.$idx.':likes'}; + my $likesize="100"; + if ($thislikes>$twoplus) { + $likesize="200"; + } elsif ($thislikes>$oneplus) { + $likesize="150"; + } + if ($thislikes<$twominus) { + $likesize="50"; + } elsif ($thislikes<$oneminus) { + $likesize="75"; + } +# Actually glue in the message itself $$discussionitems[$idx].= '
'. - $message.'
'; + "
". + $message. + '
'; +# Put in the like and unlike buttons + if ($userlikes{$idx}) { + $$discussionitems[$idx].=''.&mt('You like this posting').''; + } else { + $$discussionitems[$idx].=' '.&discussion_link($symb,''.&mt('Like').'','like',$idx,$$newpostsflag,$prevread,&group_args($group),&mt("Like this posting")); + } + if ($userunlikes{$idx}) { + $$discussionitems[$idx].=''.&mt('You unlike this posting').''; + } else { + $$discussionitems[$idx].=' '.&discussion_link($symb,''.&mt('Unlike').'','unlike',$idx,$$newpostsflag,$prevread,&group_args($group),&mt("Unlike this posting")); + } + my $thislikes=$likes{$symb.':'.$idx.':likes'}; + if ($thislikes>0) { + $$discussionitems[$idx].=' ('.&mt("[_1] likes",$thislikes).')'; + } elsif ($thislikes<0) { + $$discussionitems[$idx].=' ('.&mt("[_1] unlikes",abs($thislikes)).')'; + } if ($contrib{$idx.':history'}) { my @postversions = (); $$discussionitems[$idx] .= &mt('This post has been edited by the author.'); @@ -1396,7 +1505,7 @@ sub filter_regexp { sub get_post_contents { - my ($contrib,$idx,$seeid,$type,$messages,$subjects,$allattachments,$attachtxt,$imsfiles,$screenname,$plainname,$numver) = @_; + my ($contrib,$idx,$seeid,$type,$messages,$subjects,$allattachments,$attachtxt,$imsfiles,$screenname,$plainname,$showaboutme,$numver) = @_; my $discussion = ''; my $start=$numver; my $end=$numver + 1; @@ -1414,13 +1523,20 @@ sub get_post_contents { $$contrib{$idx.':sendername'}, $$contrib{$idx.':senderdomain'}); $$screenname=$$contrib{$idx.':screenname'}; - - my $sender=&Apache::loncommon::aboutmewrapper( + $$showaboutme = &Apache::lonnet::usertools_access($$contrib{$idx.':sendername'}, + $$contrib{$idx.':senderdomain'}, + 'aboutme'); + my $sender = $$plainname; + if ($$showaboutme) { + $sender = &Apache::loncommon::aboutmewrapper( $$plainname, $$contrib{$idx.':sendername'}, - $$contrib{$idx.':senderdomain'}).' ('. - $$contrib{$idx.':sendername'}.':'. - $$contrib{$idx.':senderdomain'}.')'; + $$contrib{$idx.':senderdomain'}); + } + if ($seeid) { + $sender .= ' ('.$$contrib{$idx.':sendername'}.':'. + $$contrib{$idx.':senderdomain'}.')'; + } my $attachmenturls = $$contrib{$idx.':attachmenturl'}; my @postversions = (); if ($type eq 'allversions' || $type eq 'export') { @@ -2842,6 +2958,26 @@ sub send_msg { return ($status,$sendsomething); } +# Store feedback "likes" + +sub storefeedbacklikes { + my ($likes,$uname,$udom,$course)=@_; + unless ($likes) { $likes=0; } + if ($likes>0) { $likes=1; } + if ($likes<0) { $likes=-1; } + unless ($uname) { $uname=$env{'user.name'}; } + unless ($udom) { $udom=$env{'user.domain'}; } + unless ($course) { $course=$env{'request.course.id'}; } + my %record=&getfeedbackrecords($uname,$udom,$course); + my $totallikes=$record{'totallikes'}; + $totallikes+=$likes; + my %newrecord=('likes_user' => $env{'user.name'}, + 'likes_domain' => $env{'user.domain'}, + 'likes' => $likes, + 'totallikes' => $totallikes); + return &Apache::lonnet::cstore(\%newrecord,'_feedback',$course,$udom,$uname); +} + sub adddiscuss { my ($symb,$email,$anon,$attachmenturl,$subject,$group)=@_; my $status=''; @@ -2940,7 +3076,7 @@ sub adddiscuss { $env{'course.'.$env{'request.course.id'}.'.domain'}, $env{'course.'.$env{'request.course.id'}.'.num'}); } - my %record=&Apache::lonnet::restore('_discussion'); + my %record=&getdiscussionrecords(); my ($temp)=keys(%record); unless ($temp=~/^error\:/) { my %newrecord=(); @@ -2955,6 +3091,41 @@ sub adddiscuss { return $status.'
'; } +# Routine to get the complete discussion records + +sub getdiscussionrecords { + my ($uname,$udom,$course)=@_; + unless ($uname) { $uname=$env{'user.name'}; } + unless ($udom) { $udom=$env{'user.domain'}; } + unless ($course) { $course=$env{'request.course.id'}; } + my %record=&Apache::lonnet::restore('_discussion',$course,$udom,$uname); + return %record; +} + +# Store discussion "likes" + +sub storediscussionlikes { + my ($likes,$uname,$udom,$course)=@_; + unless ($likes) { $likes=0; } + if ($likes>0) { $likes=1; } + if ($likes<0) { $likes=-1; } + unless ($uname) { $uname=$env{'user.name'}; } + unless ($udom) { $udom=$env{'user.domain'}; } + unless ($course) { $course=$env{'request.course.id'}; } + my %record=&getdiscussionrecords($uname,$udom,$course); + my $totallikes=$record{'totallikes'}; + my $totalvotes=$record{'totalvotes'}; + $totallikes+=$likes; + $totalvotes++; + my %newrecord=('likes_user' => $env{'user.name'}, + 'likes_domain' => $env{'user.domain'}, + 'likes' => $likes, + 'totallikes' => $totallikes, + 'totalvotes' => $totalvotes); + my $status=&Apache::lonnet::cstore(\%newrecord,'_discussion',$course,$udom,$uname); + return $status; +} + sub get_discussion_info { my ($idx,%contrib) = @_; my $changelast = 0; @@ -3481,7 +3652,7 @@ sub handler { # --------------------------- Get query string for limited number of parameters &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'}, - ['hide','unhide','deldisc','postdata','preview','replydisc','editdisc','cmd','symb','onlyunread','allposts','onlyunmark','previous','markread','markonread','markondisp','toggoff','toggon','modifydisp','changes','navtime','navmaps','navurl','sortposts','applysort','rolefilter','statusfilter','sectionpick','groupick','posterlist','userpick','attach','origpage','currnewattach','deloldattach','keepold','allversions','export','sendmessageonly','group','ref']); + ['like','unlike','hide','unhide','deldisc','postdata','preview','replydisc','editdisc','cmd','symb','onlyunread','allposts','onlyunmark','previous','markread','markonread','markondisp','toggoff','toggon','modifydisp','changes','navtime','navmaps','navurl','sortposts','applysort','rolefilter','statusfilter','sectionpick','groupick','posterlist','userpick','attach','origpage','currnewattach','deloldattach','keepold','allversions','export','sendmessageonly','group','ref']); my $group = $env{'form.group'}; my %attachmax = ( text => &mt('(128 KB max size)'), @@ -3562,11 +3733,11 @@ sub handler { my %attachmsgs = (); my %allattachments = (); my %imsfiles = (); - my ($screenname,$plainname); + my ($screenname,$plainname,$showaboutme); my %contrib=&Apache::lonnet::restore($symb,$env{'request.course.id'}, $env{'course.'.$env{'request.course.id'}.'.domain'}, $env{'course.'.$env{'request.course.id'}.'.num'}); - $r->print(&get_post_contents(\%contrib,$idx,$seeid,'allversions',\%messages,\%subjects,\%allattachments,\%attachmsgs,\%imsfiles,\$screenname,\$plainname)); + $r->print(&get_post_contents(\%contrib,$idx,$seeid,'allversions',\%messages,\%subjects,\%allattachments,\%attachmsgs,\%imsfiles,\$screenname,\$plainname,\$showaboutme)); } $r->print(&Apache::loncommon::end_page()); return OK; @@ -3759,6 +3930,100 @@ ENDREDIR '0','0','','',$env{'form.previous'},undef,undef,undef, undef,undef,undef,$group); return OK; + } elsif (($env{'form.like'}) || ($env{'form.unlike'})) { +# ----------------------------------------------------------------- Like/unlike + my $entry=$env{'form.like'}?$env{'form.like'}:$env{'form.unlike'}; + my ($symb,$idx)=split(/\:\:\:/,$entry); + ($symb,my $feedurl)=&get_feedurl_and_clean_symb($symb); + +# +# Likes and unlikes are in db-file "disclikes" of the course +# The prefix is the $symb to identify the resource discussion, +# and the $idx to identify the entry +# + my $prefix=$symb.':'.$idx.':'; + my %contrib=&Apache::lonnet::dump('disclikes', + $env{'course.'.$env{'request.course.id'}.'.domain'}, + $env{'course.'.$env{'request.course.id'}.'.num'}, + '^'.$prefix); +# Get current like or unlike status for the $idx for this user. + my $thisuser=$env{'user.name'}.':'.$env{'user.domain'}; + my ($userlikes,$userunlikes); + if (ref($contrib{$prefix.'likers'}) eq 'HASH') { + if (exists($contrib{$prefix.'likers'}{$thisuser})) { + $userlikes = 1; + } + } + if (ref($contrib{$prefix.'unlikers'}) eq 'HASH') { + if (exists($contrib{$prefix.'unlikers'}{$thisuser})) { + $userunlikes = 1; + } + } + +# Get the current "likes" count + my $likes=$contrib{$prefix.'likes'}; +# Find out if they already voted +# Users cannot like a post twice, or unlike it twice. +# They can change their mind, though. + my $alreadyflag=0; + my $thisuser=$env{'user.name'}.':'.$env{'user.domain'}; + if ($env{'form.like'}) { + if ($userlikes) { + $alreadyflag=1; + } elsif ($userunlikes) { + delete($contrib{$prefix.'unlikers'}{$thisuser}); + $likes++; + } else { + if (ref($contrib{$prefix.'likers'}) eq 'HASH') { + $contrib{$prefix.'likers'}{$thisuser} = 1; + } else { + $contrib{$prefix.'likers'} = {$thisuser => 1}; + } + $likes++; + } + } else { + if ($userunlikes) { + $alreadyflag=1; + } elsif ($userlikes) { + delete($contrib{$prefix.'likers'}{$thisuser}); + $likes--; + } else { + if (ref($contrib{$prefix.'unlikers'}) eq 'HASH') { + $contrib{$prefix.'unlikers'}{$thisuser} = 1; + } else { + $contrib{$prefix.'unlikers'} = {$thisuser => 1}; + } + $likes--; + } + } + my $result; +# $alreadyflag would be 1 if they tried to double-like or double-unlike + unless ($alreadyflag) { + my %newhash=($prefix.'likes' => $likes, + $prefix.'likers' => $contrib{$prefix.'likers'}, + $prefix.'unlikers' => $contrib{$prefix.'unlikers'}); +# Store data in db-file "disclikes" + if (&Apache::lonnet::put('disclikes', + \%newhash, + $env{'course.'.$env{'request.course.id'}.'.domain'}, + $env{'course.'.$env{'request.course.id'}.'.num'}) eq 'ok') { +# Also store with the person who posted the liked/unliked entry + if ($env{'form.like'}) { + &storediscussionlikes(1,$contrib{$idx.':sendername'},$contrib{$idx.':senderdomain'}); + $result=&mt("Registered 'Like'"); + } else { + &storediscussionlikes(-1,$contrib{$idx.':sendername'},$contrib{$idx.':senderdomain'}); + $result=&mt("Registered 'Unlike'"); + } + } else { +# Oops, something went wrong + $result=&mt("Failed to register vote"); + } + } + &redirect_back($r,$feedurl,$result.'
', + '0','0','','',$env{'form.previous'},undef,undef,undef, + undef,undef,undef,$group); + return OK; } elsif ($env{'form.cmd'}=~/^(threadedoff|threadedon)$/) { my ($symb,$feedurl)=&get_feedurl_and_clean_symb($env{'form.symb'}); if ($env{'form.cmd'} eq 'threadedon') { @@ -3970,6 +4235,7 @@ ENDREDIR $override = 1; } my $message=&clear_out_html($env{'form.comment'},$override); + # Assemble email my ($email,$citations)=&assemble_email($message,$prevattempts,