diff --git a/lib/CMTD/Helpers.pm b/lib/CMTD/Helpers.pm
index 2aa3991..0061c07 100644
--- a/lib/CMTD/Helpers.pm
+++ b/lib/CMTD/Helpers.pm
@@ -5,7 +5,8 @@ use warnings;
 use utf8;
 
 use Mojo::Base 'Mojolicious::Plugin';
-use Mojo::Util qw(b64_encode);
+use Mojo::Util qw(b64_encode md5_sum);
+use Mojo::URL;
 
 sub register {
   my ($self, $app) = @_;
@@ -14,13 +15,7 @@ sub register {
     my ($c) = @_;
     my $url = $c->req->headers->referrer ||
               $c->req->param('url');
-    return $url;
-  });
-
-  $app->helper(pageid => sub {
-    my ($c, $url) = @_;
     return unless $url;
-
     my $u = Mojo::URL->new($url);
     my $site = $u->host;
     my $path = $u->path;
@@ -30,7 +25,7 @@ sub register {
     $path =~ s<\.[a-z0-9]{2,4}$><>io;
     my $md5 = md5_sum($path);
 
-    return {site => $site, pid => $md5, path => $path};
+    return {site => $site, hash => $md5, path => $path};
   });
 
   $app->helper(maintenance => sub {
@@ -63,29 +58,30 @@ sub register {
     my ($c, $code, $msg) = @_;
     $c->res->code($code);
     $c->render(text => "$msg\n");
+    $c->rendered;
     return;
   });
 
   $app->helper(site_by_name => sub {
     my ($c, $site) = @_;
-    return $self->app->db->select('sites', '*', {site => $site})->hash;
+    return $c->app->db->select('sites', '*', {site => $site})->hash;
   });
 
   $app->helper(pid_by_hash => sub {
     my ($c, $sid, $hash) = @_;
-    return $self->app->db->select('pages', 'id', {sid => $sid, hash => $hash})->list;
+    return $c->app->db->select('pages', 'id', {sid => $sid, hash => $hash})->list;
   });
   $app->helper(comments_by_pid => sub {
     my ($c, $pid) = @_;
-    return $self->app->db->select('comments', '*', {pid => $pid}, 'seq')->hashes;
+    return $c->app->db->select('comments', '*', {pid => $pid}, 'seq')->hashes;
   });
   $app->helper(captcha_by_id => sub {
     my ($c, $cid) = @_;
-    return $self->app->db->select('captcha', '*', {cid => $cid})->hash;
+    return $c->app->db->select('captcha', '*', {cid => $cid})->hash;
   });
   $app->helper(captcha_solve => sub {
     my ($c, $id, $input) = @_;
-    my $cap = $self->app->db->select('captcha', '*', {cid => $id})->hash;
+    my $cap = $c->app->db->select('captcha', '*', {cid => $id})->hash;
     return "no captcha with this id"
       unless $cap and ref($cap) eq 'HASH';
     if ($cap->{code} ne $input) {
@@ -109,7 +105,7 @@ sub register {
   });
   $app->helper(add_page => sub {
     my ($c, $sid, $page) = @_;
-    $self->app->db->insert('pages', {
+    $c->app->db->insert('pages', {
       sid  => $sid,
       hash => $page->{hash},
       path => $page->{path},
@@ -118,9 +114,9 @@ sub register {
   $app->helper(add_comment => sub {
     my ($c, $pid, $cm) = @_;
     my $table = 'comments';
-    $self->app->db->begin;
-    my $seq = $self->app->db->select($table, 'max(seq)', {pid => $pid})->list;
-    $self->app->db->insert($table, {
+    $c->app->db->begin;
+    my $seq = $c->app->db->select($table, 'max(seq)', {pid => $pid})->list;
+    $c->app->db->insert($table, {
       pid  => $pid,
       seq  => $seq,
       date => time(),
@@ -129,7 +125,7 @@ sub register {
       email => $cm->{email},
       text  => b64_encode($cm->{text}),
     });
-    $self->app->db->commit;
+    $c->app->db->commit;
   });
 }