How do you count the number of crossings on the reference? There's a mistake "undefined method `number' for nil:NilClass."

[nishika]

I created a migration:

class AddNumberToGame < ActiveRecord::Migration
  def change
    add_column :games, :number, :integer, default: 0
  end
end

Changed routes.rb :

Rails.application.routes.draw do
  resources :games do
    get :number_lost, on: :collection
    get :number_win, on: :collection
  end
end

games_controller.rb :

class GamesController < ApplicationController
  before_action :set_game, only: [:show, :edit, :update, :destroy, :number_lost, :number_win]
def index

@a = Array(1..25)

@d = number_nil
@games = Game.all

end
def number_lost

@game.increment!(:number)

redirect_to action: :index

end
def number_win

@game.increment!(:number)

redirect_to action: :index

end
private
Use callbacks to share common setup or constraints between actions.
def set_game

@game = Game.find(params[:id])

end
Never trust parameters from the scary internet, only allow the white list through.
def game_params

params[:game]

end
def number_nil

mas = Array(1..25)

mas.sort_by{rand}

end

end

index.html.erb :

    <div class="container">

<% @d.each do |i| %>

<% if i == 12 %>

<div class="count_win"><h1><%= link_to 'Win' %></h1></div>

<% else %>

<div class="count_lost"><h1><%= link_to 'Lost', number_lost_games_url(i) %> </h1></div>

<% end %>

<% end %>

</div>

&lt;p&gt;Неправельний ответ : &lt;%= @game.number %&gt;&lt;/p&gt;

I've got a mistake:

ActionView::Template::Error (undefined method number' for nil:NilClass):     19:         <% end %>     20:     </div>     21:      22:     <p>Неправельний ответ : <%= @game.number %></p>     23:      24:     <% @games.each do |game| %>     25:         <tr>   app/views/games/index.html.erb:22:in _app_views_games_index_html_erb__510322269_48762876'

Tell me where my mistake is.

[chanisef]

Here's the action code.

  def index
    @a = Array(1..25)
    @d = number_nil
@games = Game.all

end

and in it, you choose all the games and assign the variable @games.
And in your presentation, you're talking about one game, that is, @game. I think you should list all the games for each and every single one of them as claws.

<%- @games.each do |game| %>

...

<p>Неправельный ответ : <%= game.number %></p>

...

<%- end %>