diff --git a/framework/framework/server.ts b/framework/framework/server.ts
index c24ccfc76..b6fcbb561 100644
--- a/framework/framework/server.ts
+++ b/framework/framework/server.ts
@@ -23,7 +23,7 @@ import serializer from './serializer';
 
 export { WebSocket, WebSocketServer } from 'ws';
 
-const kHandler = Symbol.for('hydro.handler');
+export const kHandler = Symbol.for('hydro.handler');
 
 // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/encodeURIComponent
 export function encodeRFC5987ValueChars(str: string) {
@@ -111,7 +111,7 @@ export interface UserModel {
 
 export interface HandlerCommon { }
 export class HandlerCommon {
-    static [kHandler] = true;
+    static [kHandler]: string | boolean = true;
     session: Record<string, any>;
     args: Record<string, any>;
     request: HydroRequest;
@@ -459,6 +459,7 @@ ${c.response.status} ${endTime - startTime}ms ${c.response.length}`);
         const h = new HandlerClass(ctx, this.ctx);
         ctx.handler = h;
         const method = ctx.method.toLowerCase();
+        const name = (typeof HandlerClass[kHandler] === 'string' ? HandlerClass[kHandler] : HandlerClass.name).replace(/Handler$/, '');
         try {
             const operation = (method === 'post' && ctx.request.body?.operation)
                 ? `_${ctx.request.body.operation}`.replace(/_([a-z])/gm, (s) => s[1].toUpperCase())
@@ -479,7 +480,6 @@ ${c.response.status} ${endTime - startTime}ms ${c.response.length}`);
                 throw new MethodNotAllowedError(method);
             }
 
-            const name = HandlerClass.name.replace(/Handler$/, '');
             const steps = [
                 'log/__init', 'init', 'handler/init',
                 `handler/before-prepare/${name}#${method}`, `handler/before-prepare/${name}`, 'handler/before-prepare',
@@ -516,7 +516,7 @@ ${c.response.status} ${endTime - startTime}ms ${c.response.length}`);
             }
         } catch (e) {
             try {
-                await this.ctx.serial(`handler/error/${HandlerClass.name.replace(/Handler$/, '')}`, h, e);
+                await this.ctx.serial(`handler/error/${name}`, h, e);
                 await this.ctx.serial('handler/error', h, e);
                 await h.onerror(e);
             } catch (err) {
@@ -596,7 +596,7 @@ ${c.response.status} ${endTime - startTime}ms ${c.response.length}`);
 
     private register(type: 'route' | 'conn', routeName: string, path: string, HandlerClass: any, ...permPrivChecker) {
         if (!HandlerClass?.[kHandler] || !isClass(HandlerClass)) throw new Error('Invalid registration.');
-        const name = HandlerClass.name;
+        const name = typeof HandlerClass[kHandler] === 'string' ? HandlerClass[kHandler] : HandlerClass.name;
         if (this.registrationCount[name] && this.registry[name] !== HandlerClass) {
             logger.warn('Route with name %s already exists.', name);
         }
diff --git a/packages/hydrooj/src/service/db.ts b/packages/hydrooj/src/service/db.ts
index 6dee3f3fd..7693aa0ff 100644
--- a/packages/hydrooj/src/service/db.ts
+++ b/packages/hydrooj/src/service/db.ts
@@ -124,12 +124,12 @@ class MongoService {
         return [pageDocs, numPages, count];
     }
 
-    async ranked<T extends Record<string, any>>(cursor: FindCursor<T>, equ: (a: T, b: T) => boolean): Promise<[number, T][]> {
+    async ranked<T extends Record<string, any>>(cursor: T[] | FindCursor<T>, equ: (a: T, b: T) => boolean): Promise<[number, T][]> {
         let last = null;
         let r = 0;
         let count = 0;
         const results = [];
-        const docs = await cursor.toArray();
+        const docs = cursor instanceof Array ? cursor : await cursor.toArray();
         for (const doc of docs) {
             if ((doc as any).unrank) {
                 results.push([0, doc]);
diff --git a/packages/ui-default/templates/contest_manage.html b/packages/ui-default/templates/contest_manage.html
index 829a7bad9..a7af2a9a9 100644
--- a/packages/ui-default/templates/contest_manage.html
+++ b/packages/ui-default/templates/contest_manage.html
@@ -2,6 +2,7 @@
 {% import "components/contest.html" as contest with context %}
 {% import "components/problem.html" as problem with context %}
 {% block content %}
+{{ set(UiContext, 'tdoc', tdoc) }}
 <div class="row">
   <div class="medium-9 columns">
     <div class="row">