Add public scoreboard slug & URL

app/controllers/contests_controller.rb

@@ -69,6 +69,6 @@ class ContestsController < ApplicationController
   end
 
   def contest_params
-    params.expect(contest: [ :name, :team, :allow_registration ])
+    params.expect(contest: [ :name, :team, :allow_registration, :slug ])
   end
 end

app/controllers/sessions_controller.rb

@@ -1,13 +1,12 @@
 class SessionsController < ApplicationController
   allow_unauthenticated_access only: %i[ new create ]
   rate_limit to: 10, within: 3.minutes, only: :create, with: -> { redirect_to new_session_url, alert: "Try again later." }
+  before_action :skip_authorization
 
   def new
-    skip_authorization
   end
 
   def create
-    skip_authorization
     if user = User.authenticate_by(params.permit(:email_address, :password))
       start_new_session_for user
       redirect_to after_authentication_url

app/models/contest.rb

@@ -5,6 +5,7 @@
 #  id                 :integer          not null, primary key
 #  allow_registration :boolean          default(FALSE)
 #  name               :string
+#  slug               :string
 #  team               :boolean          default(FALSE)
 #  created_at         :datetime         not null
 #  updated_at         :datetime         not null
@@ -24,4 +25,7 @@ class Contest < ApplicationRecord
   has_many :completions, dependent: :destroy
   has_many :contestants, dependent: :destroy
   has_many :puzzles, dependent: :destroy
+
+  validates :name, presence: true
+  validates :slug, presence: true, format: { with: /\A(\w|-)*\z/, message: 'Only alphanumeric characters, "-" and "_" allowed.' }
 end

app/views/contests/_form.html.slim

@@ -4,6 +4,12 @@
       .form-floating
         = form.text_field :name, autocomplete: "off", class: "form-control"
         = form.label :name, class: "required"
+  .row.mb-3
+    .col
+      .form-floating
+        = form.text_field :slug, autocomplete: "off", class: "form-control"
+        = form.label :slug, class: "required"
+      .form-text This will be used for building the public scoreboard URL: https://puzzle-scoreboard.org/public/<slug>.
   .row.mb-3
     .col
       .form-check.form-switch

app/views/contests/show.html.slim

@@ -1,4 +1,4 @@
-.row.mb-2
+.row.mb-4
   .col
     css:
       .badges { margin-top: -18px; position: absolute; }
@@ -6,10 +6,16 @@
       - @badges.each do |badge|
         span.badge.text-bg-info.me-2
           = badge
+
+.row.mb-4
+  .col
     .float-end
       a.btn.btn-primary href=edit_contest_path(@contest)
         | Edit contest
-
+    p
+      |> Public scoreboard:
+      = link_to root_url + "public/#{@contest.slug}"
+    
 .row.mb-4
   .col-6
     .row