*やりたいこと
railsでransackを用いて検索機能を実装させたい
*解決したいこと
ransack実装時に起きるエラーを解決したい
*前提
現在railsでタスク管理アプリを作っており一覧画面でタスクの絞り込みを行いたいと思っています。
*起きるエラー
ruby
1No Ransack::Search object was provided to search_form_for!
FullTraceは以下のように出ます。
ruby
1ransack (2.3.0) lib/ransack/helpers/form_helper.rb:21:in `search_form_for' 2app/views/tasks/index.html.slim:5:in `_app_views_tasks_index_html_slim___1759395067466273319_70242397935860' 3actionview (5.2.3) lib/action_view/template.rb:159:in `block in render' 4activesupport (5.2.3) lib/active_support/notifications.rb:170:in `instrument' 5actionview (5.2.3) lib/action_view/template.rb:354:in `instrument_render_template' 6actionview (5.2.3) lib/action_view/template.rb:157:in `render' 7actionview (5.2.3) lib/action_view/renderer/template_renderer.rb:54:in `block (2 levels) in render_template' 8actionview (5.2.3) lib/action_view/renderer/abstract_renderer.rb:44:in `block in instrument' 9activesupport (5.2.3) lib/active_support/notifications.rb:168:in `block in instrument' 10activesupport (5.2.3) lib/active_support/notifications/instrumenter.rb:23:in `instrument' 11activesupport (5.2.3) lib/active_support/notifications.rb:168:in `instrument' 12actionview (5.2.3) lib/action_view/renderer/abstract_renderer.rb:43:in `instrument' 13actionview (5.2.3) lib/action_view/renderer/template_renderer.rb:53:in `block in render_template' 14actionview (5.2.3) lib/action_view/renderer/template_renderer.rb:61:in `render_with_layout' 15actionview (5.2.3) lib/action_view/renderer/template_renderer.rb:52:in `render_template' 16actionview (5.2.3) lib/action_view/renderer/template_renderer.rb:16:in `render' 17actionview (5.2.3) lib/action_view/renderer/renderer.rb:44:in `render_template' 18actionview (5.2.3) lib/action_view/renderer/renderer.rb:25:in `render' 19actionview (5.2.3) lib/action_view/rendering.rb:103:in `_render_template' 20actionpack (5.2.3) lib/action_controller/metal/streaming.rb:219:in `_render_template' 21actionview (5.2.3) lib/action_view/rendering.rb:84:in `render_to_body' 22actionpack (5.2.3) lib/action_controller/metal/rendering.rb:52:in `render_to_body' 23actionpack (5.2.3) lib/action_controller/metal/renderers.rb:142:in `render_to_body' 24actionpack (5.2.3) lib/abstract_controller/rendering.rb:25:in `render' 25actionpack (5.2.3) lib/action_controller/metal/rendering.rb:36:in `render' 26actionpack (5.2.3) lib/action_controller/metal/instrumentation.rb:46:in `block (2 levels) in render' 27activesupport (5.2.3) lib/active_support/core_ext/benchmark.rb:14:in `block in ms' 28/Users/keisuke713/.rbenv/versions/2.6.3/lib/ruby/2.6.0/benchmark.rb:308:in `realtime' 29activesupport (5.2.3) lib/active_support/core_ext/benchmark.rb:14:in `ms' 30actionpack (5.2.3) lib/action_controller/metal/instrumentation.rb:46:in `block in render' 31actionpack (5.2.3) lib/action_controller/metal/instrumentation.rb:87:in `cleanup_view_runtime' 32activerecord (5.2.3) lib/active_record/railties/controller_runtime.rb:31:in `cleanup_view_runtime' 33actionpack (5.2.3) lib/action_controller/metal/instrumentation.rb:45:in `render' 34actionpack (5.2.3) lib/action_controller/metal/implicit_render.rb:35:in `default_render' 35actionpack (5.2.3) lib/action_controller/metal/basic_implicit_render.rb:6:in `block in send_action' 36actionpack (5.2.3) lib/action_controller/metal/basic_implicit_render.rb:6:in `tap' 37actionpack (5.2.3) lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action' 38actionpack (5.2.3) lib/abstract_controller/base.rb:194:in `process_action' 39actionpack (5.2.3) lib/action_controller/metal/rendering.rb:30:in `process_action' 40actionpack (5.2.3) lib/abstract_controller/callbacks.rb:42:in `block in process_action' 41activesupport (5.2.3) lib/active_support/callbacks.rb:132:in `run_callbacks' 42actionpack (5.2.3) lib/abstract_controller/callbacks.rb:41:in `process_action' 43actionpack (5.2.3) lib/action_controller/metal/rescue.rb:22:in `process_action' 44actionpack (5.2.3) lib/action_controller/metal/instrumentation.rb:34:in `block in process_action' 45activesupport (5.2.3) lib/active_support/notifications.rb:168:in `block in instrument' 46activesupport (5.2.3) lib/active_support/notifications/instrumenter.rb:23:in `instrument' 47activesupport (5.2.3) lib/active_support/notifications.rb:168:in `instrument' 48actionpack (5.2.3) lib/action_controller/metal/instrumentation.rb:32:in `process_action' 49actionpack (5.2.3) lib/action_controller/metal/params_wrapper.rb:256:in `process_action' 50activerecord (5.2.3) lib/active_record/railties/controller_runtime.rb:24:in `process_action' 51actionpack (5.2.3) lib/abstract_controller/base.rb:134:in `process' 52actionview (5.2.3) lib/action_view/rendering.rb:32:in `process' 53actionpack (5.2.3) lib/action_controller/metal.rb:191:in `dispatch' 54actionpack (5.2.3) lib/action_controller/metal.rb:252:in `dispatch' 55actionpack (5.2.3) lib/action_dispatch/routing/route_set.rb:52:in `dispatch' 56actionpack (5.2.3) lib/action_dispatch/routing/route_set.rb:34:in `serve' 57actionpack (5.2.3) lib/action_dispatch/journey/router.rb:52:in `block in serve' 58actionpack (5.2.3) lib/action_dispatch/journey/router.rb:35:in `each' 59actionpack (5.2.3) lib/action_dispatch/journey/router.rb:35:in `serve' 60actionpack (5.2.3) lib/action_dispatch/routing/route_set.rb:840:in `call' 61warden (1.2.8) lib/warden/manager.rb:36:in `block in call' 62warden (1.2.8) lib/warden/manager.rb:34:in `catch' 63warden (1.2.8) lib/warden/manager.rb:34:in `call' 64rack (2.0.7) lib/rack/tempfile_reaper.rb:15:in `call' 65rack (2.0.7) lib/rack/etag.rb:25:in `call' 66rack (2.0.7) lib/rack/conditional_get.rb:25:in `call' 67rack (2.0.7) lib/rack/head.rb:12:in `call' 68actionpack (5.2.3) lib/action_dispatch/http/content_security_policy.rb:18:in `call' 69rack (2.0.7) lib/rack/session/abstract/id.rb:232:in `context' 70rack (2.0.7) lib/rack/session/abstract/id.rb:226:in `call' 71actionpack (5.2.3) lib/action_dispatch/middleware/cookies.rb:670:in `call' 72activerecord (5.2.3) lib/active_record/migration.rb:559:in `call' 73actionpack (5.2.3) lib/action_dispatch/middleware/callbacks.rb:28:in `block in call' 74activesupport (5.2.3) lib/active_support/callbacks.rb:98:in `run_callbacks' 75actionpack (5.2.3) lib/action_dispatch/middleware/callbacks.rb:26:in `call' 76actionpack (5.2.3) lib/action_dispatch/middleware/executor.rb:14:in `call' 77actionpack (5.2.3) lib/action_dispatch/middleware/debug_exceptions.rb:61:in `call' 78web-console (3.7.0) lib/web_console/middleware.rb:135:in `call_app' 79web-console (3.7.0) lib/web_console/middleware.rb:30:in `block in call' 80web-console (3.7.0) lib/web_console/middleware.rb:20:in `catch' 81web-console (3.7.0) lib/web_console/middleware.rb:20:in `call' 82actionpack (5.2.3) lib/action_dispatch/middleware/show_exceptions.rb:33:in `call' 83railties (5.2.3) lib/rails/rack/logger.rb:38:in `call_app' 84railties (5.2.3) lib/rails/rack/logger.rb:26:in `block in call' 85activesupport (5.2.3) lib/active_support/tagged_logging.rb:71:in `block in tagged' 86activesupport (5.2.3) lib/active_support/tagged_logging.rb:28:in `tagged' 87activesupport (5.2.3) lib/active_support/tagged_logging.rb:71:in `tagged' 88railties (5.2.3) lib/rails/rack/logger.rb:26:in `call' 89sprockets-rails (3.2.1) lib/sprockets/rails/quiet_assets.rb:13:in `call' 90actionpack (5.2.3) lib/action_dispatch/middleware/remote_ip.rb:81:in `call' 91actionpack (5.2.3) lib/action_dispatch/middleware/request_id.rb:27:in `call' 92rack (2.0.7) lib/rack/method_override.rb:22:in `call' 93rack (2.0.7) lib/rack/runtime.rb:22:in `call' 94activesupport (5.2.3) lib/active_support/cache/strategy/local_cache_middleware.rb:29:in `call' 95actionpack (5.2.3) lib/action_dispatch/middleware/executor.rb:14:in `call' 96actionpack (5.2.3) lib/action_dispatch/middleware/static.rb:127:in `call' 97rack (2.0.7) lib/rack/sendfile.rb:111:in `call' 98railties (5.2.3) lib/rails/engine.rb:524:in `call' 99puma (3.12.1) lib/puma/configuration.rb:227:in `call' 100puma (3.12.1) lib/puma/server.rb:660:in `handle_request' 101puma (3.12.1) lib/puma/server.rb:474:in `process_client' 102puma (3.12.1) lib/puma/server.rb:334:in `block in run' 103puma (3.12.1) lib/puma/thread_pool.rb:135:in `block in spawn_thread'
*関係するであろうコード
tasks_controller.rb
ruby
1def index 2 @q = current_user.tasks.ransack(params[:q] 3 @tasks = @q.result(distinct: true) 4end
index.html.slim
ruby
1= provide(:title, 'All tasks') 2.container 3 .row 4 h1 All Tasks 5 = search_form_for @q do |f| 6 = f.label :title_cont, 'タイトル' 7 = f.search_field :title_cont 8 = f.submit 9 = link_to '新規登録', new_task_path 10 = flash[:danger] 11 .tasks 12 = render partial: 'shared/task', collection: @tasks
*試したこと
一度viewの検索フォームを消してリロードしたところ通常通りにページが表示されたのでcontrollerの定義に間違いはないと思います。
*環境
ruby 2.6.3
rails 5.2.3
以上、もしわかるかたいたらご教示ください。よろしくお願いします。
@q =
の行のカッコが閉じていませんが、それをつけても発生しますか?
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