Change: #647 NGワードの入力フォーム (#663)

* Change: #647 NGワードの入力フォーム

* Wip: 画面改造

* テストコード、画面

* Fix: 複数の問題

app/controllers/admin/ng_words/keywords_controller.rb

@@ -0,0 +1,30 @@
+# frozen_string_literal: true
+
+module Admin
+  class NgWords::KeywordsController < NgWordsController
+    def show
+      super
+      @ng_words = ::NgWord.caches.presence || [::NgWord.new]
+    end
+
+    protected
+
+    def validate
+      begin
+        ::NgWord.save_from_raws(settings_params_test)
+        return true
+      rescue
+        flash[:alert] = I18n.t('admin.ng_words.test_error')
+        redirect_to after_update_redirect_path
+      end
+
+      false
+    end
+
+    private
+
+    def after_update_redirect_path
+      admin_ng_words_keywords_path
+    end
+  end
+end