core: fix domain_join

packages/hydrojudge/package.json

@@ -1,7 +1,7 @@
 {
     "name": "@hydrooj/hydrojudge",
     "bin": "bin/hydrojudge.js",
-    "version": "2.5.4",
+    "version": "2.5.5",
     "main": "package.json",
     "author": "undefined <i@undefined.moe>",
     "repository": "https://github.com/hydro-dev/Hydro.git",

packages/hydrooj/package.json

@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.23.3",
+    "version": "2.23.4",
     "bin": "bin/hydrooj.js",
     "main": "dist/loader.js",
     "typings": "dist/loader.d.ts",

packages/hydrooj/src/model/domain.ts

@@ -216,7 +216,7 @@ class DomainModel {
     }
 
     static getJoinSettings(ddoc: DomainDoc, roles: string[]) {
-        if (!ddoc.join) return null;
+        if (!ddoc._join) return null;
         const joinSettings = ddoc._join;
         if (joinSettings.method === DomainModel.JOIN_METHOD_NONE) return null;
         if (!roles.includes(joinSettings.role)) return null;