Some improvements

app/controllers/contestants_controller.rb

@@ -4,7 +4,7 @@ class ContestantsController < ApplicationController
   before_action :set_completions, only: %i[edit update ]
 
   def edit
-    @title = "Edit contestant"
+    @title = "Contestant"
   end
 
   def new
@@ -27,7 +27,7 @@ class ContestantsController < ApplicationController
     if @contestant.update(contestant_params)
       redirect_to @contest
     else
-      @title = "Edit contestant"
+      @title = "Contestant"
       render :edit, status: :unprocessable_entity
     end
   end
@@ -47,8 +47,32 @@ class ContestantsController < ApplicationController
     @contestant = Contestant.find(params[:id])
   end
 
+  def pad(n)
+    if n > 9
+      return n.to_s
+    end
+    "0" + n.to_s
+  end
+
+  def display_time(seconds)
+    if seconds > 3600
+      hours = seconds / 3600
+      return hours.to_s + ":" + display_time(seconds % 3600)
+    elsif seconds > 60
+      minutes = seconds / 60
+      return pad(minutes) + ":" + display_time(seconds % 60)
+    end
+    pad(seconds)
+  end
+
   def set_completions
-    @completions = @contestant.completions
+    @completions = @contestant.completions.order(:time_seconds)
+    current_time_from_start = 0
+    @completions.each do |completion|
+      completion.display_time_from_start = display_time(completion.time_seconds)
+      completion.display_relative_time = display_time(completion.time_seconds - current_time_from_start)
+      current_time_from_start += completion.time_seconds
+    end
   end
 
   def contestant_params

app/controllers/contests_controller.rb

@@ -8,8 +8,8 @@ class ContestsController < ApplicationController
 
   def show
     @title = @contest.name
-    @contestants = @contest.contestants
-    @puzzles = @contest.puzzles
+    @contestants = @contest.contestants.order(:name)
+    @puzzles = @contest.puzzles.order(:id)
     set_badges
   end