add trashable to question

app/admin/questions.rb

@@ -1,6 +1,30 @@
 ActiveAdmin.register Question do
   permit_params :authorship, :authorship_year, :check_type, :difficulty, :status, :subject_id
 
+  scope :all, default: true
+  scope :trashed
+
+  controller do
+    def show
+      @question = Question.unscoped.find_by!(permitted_params[:question])
+    end
+
+    def edit
+      @question = Question.unscoped.find_by!(permitted_params[:question])
+    end
+
+    def destroy
+      @question = Question.unscoped.find(permitted_params[:id])
+
+      if @question.deleted_at
+        redirect_to admin_questions_path, notice: t('active_admin.question.already_destroyed')
+      else
+        @question.destroy
+        redirect_to admin_questions_path, notice: t('active_admin.question.succesfully_destroyed')
+      end
+    end
+  end
+
   index do
     selectable_column
     id_column