Show no matches while matches are being generated

app/controllers/tournaments_controller.rb

@@ -144,7 +144,7 @@ class TournamentsController < ApplicationController
 
   def check_for_matches
     if @tournament
-    	if @tournament.matches.empty?
+    	if @tournament.matches.empty? or @tournament.curently_generating_matches == 1
     	  redirect_to "/tournaments/#{@tournament.id}/no_matches"
     	end
     end

app/models/generates_tournament_matches.rb

@@ -1,9 +1,13 @@
 module GeneratesTournamentMatches
 
   def generateMatchups
+    self.curently_generating_matches = 1
+    self.save
     resetSchoolScores
     setSeedsAndRandomSeedingWrestlersWithoutSeeds
     poolToBracket() if tournament_type == "Pool to bracket"
+    self.curently_generating_matches = nil
+    self.save
     matches
   end
   if Rails.env.production?

db/migrate/20151230163202_generating_matches.rb

@@ -0,0 +1,5 @@
+class GeneratingMatches < ActiveRecord::Migration
+  def change
+    add_column :tournaments, :curently_generating_matches, :integer
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20151229220036) do
+ActiveRecord::Schema.define(version: 20151230163202) do
 
   create_table "delayed_jobs", force: :cascade do |t|
     t.integer  "priority",   default: 0, null: false
@@ -93,6 +93,7 @@ ActiveRecord::Schema.define(version: 20151229220036) do
     t.text     "tournament_type"
     t.text     "weigh_in_ref"
     t.integer  "user_id"
+    t.integer  "curently_generating_matches"
   end
 
   add_index "tournaments", ["user_id"], name: "index_tournaments_on_user_id"