Add contest organizer form param

app/controllers/contestants_controller.rb

@@ -164,7 +164,7 @@ class ContestantsController < ApplicationController
     skip_authorization
 
     @contestant = Contestant.find(params[:contestant_id])
-    if !@contestant || !@contestant.contest.code.present?
+    if !@contestant || !@contestant.contest.code.present? || !@contestant.contest.organizer_form
       not_found and return
     end
     @contest = @contestant.contest

app/controllers/contests_controller.rb

@@ -286,7 +286,7 @@ class ContestsController < ApplicationController
   end
 
   def settings_onsite_params
-    params.expect(contest: [ :code ])
+    params.expect(contest: [ :code, :organizer_form ])
   end
 
   def settings_online_params

app/models/contest.rb

@@ -10,6 +10,7 @@
 #  lang               :string           default("en")
 #  name               :string
 #  offline_form       :boolean          default(FALSE)
+#  organizer_form     :boolean
 #  pause_time         :datetime
 #  public             :boolean          default(FALSE)
 #  ranking_mode       :string

app/views/contests/settings_onsite_edit.html.slim

@@ -1,7 +1,17 @@
 = render "params_nav"
 
 = form_with model: @contest, url: "/contests/#{@contest.id}/settings/onsite" do |form|
-  .row.mt-2.mb-3
+  .row
+    .col
+      .alert.alert-warning role="alert"
+        = t("contests.nav.onsite_description")
+  .row.mt-1
+    .col
+      .form-check.form-switch
+        = form.check_box :organizer_form, class: "form-check-input"
+        = form.label :organizer_form
+      .form-text = t("activerecord.attributes.contest.organizer_form")
+  .row.mt-3.mb-3
     .col
       .form-floating
         = form.text_field :code, autocomplete: "off", class: "form-control"