Use the array from getFiltersForClass directly instead of converting …

…to hash.

lib/WeBWorK/ContentGenerator/Instructor/Stats.pm

@@ -102,15 +102,15 @@ sub siblings ($c) {
 }
 
 # Apply the currently selected filter to the student records, and return a reference to the
-# list of students and a reference to a hash of section/recitation filters.
+# list of students and a reference to the array of section/recitation filters.
 sub filter_students ($c) {
-	my $filter   = $c->param('filter');
-	my @students = $filter ? filterRecords($c, 0, [$filter], @{ $c->{student_records} }) : @{ $c->{student_records} };
+	my $filter = $c->param('filter') || 'all';
+	my @students =
+		$filter eq 'all' ? @{ $c->{student_records} } : filterRecords($c, 0, [$filter], @{ $c->{student_records} });
 
-	# convert the array from getFiltersForClass to a hash, after removing the first 'all' filter.
+	# Change visible name of the first 'all' filter.
 	my $filters = getFiltersForClass($c, [ 'section', 'recitation' ], @{ $c->{student_records} });
-	shift(@$filters);
-	$filters = { map { $_->[1] => $_->[0] } @$filters };
+	$filters->[0][0] = $c->maketext('All students');
 
 	return (\@students, $filters);
 }

lib/WeBWorK/ContentGenerator/Instructor/StudentProgress.pm

@@ -116,14 +116,13 @@ sub displaySets ($c) {
 		: (date => 0, testtime => 0, timeleft => 0, problems => 1, section => 1, recit => 1, login => 1);
 	my $showBestOnly = $setIsVersioned ? $c->param('show_best_only') : 0;
 
-	my $filter = $c->param('filter');
+	my $filter = $c->param('filter') || 'all';
 	my @student_records =
-		$filter ? filterRecords($c, 0, [$filter], @{ $c->{student_records} }) : @{ $c->{student_records} };
+		$filter eq 'all' ? @{ $c->{student_records} } : filterRecords($c, 0, [$filter], @{ $c->{student_records} });
 
-	# convert the array from getFiltersForClass to a hash, after removing the first 'all' filter.
+	# Change visible name of the first 'all' filter.
 	my $filters = getFiltersForClass($c, [ 'section', 'recitation' ], @{ $c->{student_records} });
-	shift(@$filters);
-	$filters = { map { $_->[1] => $_->[0] } @$filters };
+	$filters->[0][0] = $c->maketext('All students');
 
 	my @score_list;
 	my @user_set_list;

templates/ContentGenerator/Instructor/Stats/student_filter_menu.html.ep

@@ -1,20 +1,19 @@
-% last unless %$filters;
+% last unless @$filters > 1;
 %
 % # Create a section/recitation "filter by" dropdown if there are sections or recitations.
 <div class="btn-group student-nav-filter-selector mx-2">
-	<%= link_to param('filter') ? $filters->{param('filter')} : maketext('All students') => '#',
-		id => 'filter', class => 'btn btn-primary dropdown-toggle', role => 'button', 'aria-expanded' => 'false',
-		data => { bs_toggle => 'dropdown' } =%>
+	% my $filter         = param('filter') || 'all';
+	% my $current_filter = $filters->[0][0];
+	% for (@$filters) {
+		% $current_filter = $_->[0] if $_->[1] eq $filter;
+	% }
+	<%= link_to $current_filter => '#', id => 'filter', class => 'btn btn-primary dropdown-toggle',
+		role => 'button', 'aria-expanded' => 'false', data => { bs_toggle => 'dropdown' } =%>
 	<ul class="dropdown-menu" role="menu" aria-labelledby="filter">
-		<li>
-			<%= link_to maketext('All students') => $c->systemLink(url_for),
-				class => 'dropdown-item', param('filter') ? () : (style => 'background-color:#8F8') =%>
-		</li>
-		% for (sort keys %$filters) {
+		% for (@$filters) {
 			<li>
-				<%= link_to $filters->{$_} => $c->systemLink(url_for, params => { %$params, filter => $_ }),
-					(param('filter') || '') eq $_ ? (style => 'background-color: #8F8') : (),
-					class => 'dropdown-item' =%>
+				<%= link_to $_->[0] => $c->systemLink(url_for, params => { %$params, filter => $_->[1] }),
+					$_->[1] eq $filter ? (style => 'background-color: #8F8') : (), class => 'dropdown-item' =%>
 			</li>
 		% }
 	</ul>

templates/ContentGenerator/Instructor/StudentProgress/set_progress.html.ep

@@ -21,7 +21,7 @@
 % );
 %
 % # Filter selector.
-% if (%$filters) {
+% if (@$filters > 1) {
 	<div class="d-flex align-items-center mt-1 mb-3">
 		<%= maketext('Showing progress for:') =%>
 		<%= include 'ContentGenerator/Instructor/Stats/student_filter_menu',