実現したいこと
validateのテンプレートのエラーメッセージを表示したいです。
前提
検索機能を作成していて、検索時に空白で検索した時、個々のエラーメッセージを表示したいです。
発生している問題・エラーメッセージ
Started GET "/players/search" for ::1 at 2023-03-12 21:13:49 +0900 Processing by PlayersController#search as HTML Rendering layout layouts/application.html.erb Rendering players/search.html.erb within layouts/application Rendered shared/_error_messages.html.erb (Duration: 3.2ms | Allocations: 2360) Rendered players/search.html.erb within layouts/application (Duration: 5.5ms | Allocations: 3012) Rendered layout layouts/application.html.erb (Duration: 5.8ms | Allocations: 3095) Completed 500 Internal Server Error in 12ms (ActiveRecord: 0.0ms | Allocations: 5038) ActionView::Template::Error (undefined method `errors' for nil:NilClass): 1: <% if object.errors.any? %> 2: <div id="error_messages" class="alert alert-danger"> 3: <ul class="mb-0"> 4: <% object.errors.full_messages.each do |msg| %> app/views/shared/_error_messages.html.erb:1 app/views/players/search.html.erb:6 app/views/players/search.html.erb:5
該当のソースコード
search.html.erb
<div class="container-fluid"> <div class="row"> <div class="col-lg-8 offset-lg-2"> <div class="player"> <%= form_with model: @player, url: players_url, method: :get, local: true do |f| %> <%= render 'shared/error_messages', model: @player %> <div class="form-group"> <%= flash[:danger] %> <h1>プレイヤー検索</h1> <div class="w-100"></div> <div class='mt-3 mb-3'> <%= f.select :league, [["J1 League", 98], ["J2 League", 99], ["J3 League",100], ["Ligue 1", 61], ["La Liga", 140], ["Premier", 39], ["SerieA", 135], ["Bundesliga", 78], ["Eredivisie", 88], ["Primeira Liga", 94], ["World Cup 2010", 1]], include_blank: "リーグを選択して下さい" %> </div> <div class="w-100"></div> <div class='mt-3 mb-3'> <%= f.select :season, [[2001, 2001], [2002, 2002], [2003, 2003], [2004, 2004], [2005, 2005], [2006, 2006], [2007, 2007], [2008, 2008], [2009, 2009], [2010, 2010], [2011, 2011], [2012, 2012], [2013, 2013], [2014, 2014], [2015, 2015], [2016, 2016], [2017, 2017], [2018, 2018],[2019, 2019], [2020, 2020], [2021, 2021], [2022, 2022], [2023, 2023]], include_blank: "西暦を選択してください" %> </div> <div class="w-100"></div> <div class='mt-3 mb-3'> <%= f.text_field :player_name, class: 'form-control', placeholder: '選手名を入力してください(last nameのみ入力してください)' %> </div> <div class="w-100"></div> <div class="col-md"> <%= f.submit '検索', class: 'btn btn-primary' %> </div> </div> </div> </div> </div> </div> <%end%>
shared/_error_messages.html.erb
<% if object.errors.any? %> <div id="error_messages" class="alert alert-danger"> <ul class="mb-0"> <% object.errors.full_messages.each do |msg| %> <li><%= msg %></li> <% end %> </ul> </div> <% end %>
player.rb
class Player < ApplicationRecord include ActiveModel::Model #belongs_to :user attr_accessor :player_name, :season, :league validates :player_name, presence: true validates :season, presence: true validates :league, presence: true end
players_controller.rb
def show @player = Player.new(player_name: params[:player_name], season: params[:season], league: params[:league]) if @player.valid?
検索時dbには保存してない状態です。
詰まってしまったので、アドバイスの程よろしくお願いします。
下記のような回答は推奨されていません。
このような回答には修正を依頼しましょう。