Fix contest new 404

Author: adrien1018

TODOLIST.md

@@ -1,11 +1,12 @@
+- [ ] GitHub pipeline
 - [ ] Modify rejudge behavior
     - Lower priority
     - Separate contest and non-contest submissions
 - [ ] Virtual judge
 - [ ] Batch upload testdata
 - [ ] Revisit all JSON endpoints
-
-
+- [ ] Revisit all ActiveAdmin pages & Upgrade to ActiveAdmin 3
+---
 - [ ] Cache computation-intensive results (AC count of problem (Redis) / user (DB))
 - [ ] Problem import & export
     - [ ] Native format
@@ -15,6 +16,7 @@
 - [ ] Judge load balancing
 - [ ] Write basic tests
 - [ ] Add more languages
+- [ ] Consider migrate to Trilogy
 - [ ] Send compiler information from judge server
 - [ ] Per-language memory/time limit / interactive lib
 - [ ] Role for problem setter

app/controllers/application_controller.rb

@@ -106,7 +106,9 @@ def configure_permitted_parameters
   end
 
   def set_layout_and_contest
-    if /^\/contests\/./.match(request.fullpath)
+    if /^\/contests\/./.match(request.fullpath) && !/^\/contests\/new\/?/.match(request.fullpath)
+      # Use arbitrary character here instead of [0-9] to give proper 404 to requests such as /contests/abcde
+      # However, we need to exclude /contests/new
       @layout = :contest
     elsif /^\/single_contest\/./.match(request.fullpath)
       @layout = :single_contest