From 7cd27d687f6341a510dfb158dfe7d2ac82409951 Mon Sep 17 00:00:00 2001
From: koguchi-e <koguchi.e915@gmail.com>
Date: Wed, 20 May 2026 17:36:24 +0900
Subject: [PATCH 1/9] =?UTF-8?q?product=5Ftemplate=E3=83=A2=E3=83=87?=
 =?UTF-8?q?=E3=83=AB=E3=81=A8=E3=82=B3=E3=83=B3=E3=83=88=E3=83=AD=E3=83=BC?=
 =?UTF-8?q?=E3=83=A9=E3=81=AE=E4=BD=9C=E6=88=90?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../api/product_templates_controller.rb       | 31 +++++++++++++++++++
 app/models/practice.rb                        |  1 +
 app/models/product_template.rb                |  6 ++++
 ...20260520061059_create_product_templates.rb | 10 ++++++
 db/schema.rb                                  |  9 ++++++
 5 files changed, 57 insertions(+)
 create mode 100644 app/controllers/api/product_templates_controller.rb
 create mode 100644 app/models/product_template.rb
 create mode 100644 db/migrate/20260520061059_create_product_templates.rb

diff --git a/app/controllers/api/product_templates_controller.rb b/app/controllers/api/product_templates_controller.rb
new file mode 100644
index 00000000000..75c6c2d20a4
--- /dev/null
+++ b/app/controllers/api/product_templates_controller.rb
@@ -0,0 +1,31 @@
+class API::ProductTemplatesController < ApplicationController
+  before_action :set_product_template, only: %i[update]
+
+  def create
+    @template = ReportTemplate.new(product_template_params)
+    @practice = Practice.find(params[:practice])
+    if @template.save
+      render json: { id: @template.id }, status: :ok
+    else
+      head :bad_request
+    end
+  end
+
+  def update
+    if @template.update(product_template_params)
+      head :ok
+    else
+      head :bad_request
+    end
+  end
+
+  private
+
+  def product_template_params
+    params.require(:product_template).permit(:description)
+  end
+
+  def set_product_template
+    @template = Practice.find(params[:practice]).product_template
+  end
+end
diff --git a/app/models/practice.rb b/app/models/practice.rb
index 412d5ed5ac7..4cc6a1d4576 100644
--- a/app/models/practice.rb
+++ b/app/models/practice.rb
@@ -25,6 +25,7 @@ class Practice < ApplicationRecord # rubocop:todo Metrics/ClassLength
            source: :user
   has_many :skipped_practices, dependent: :destroy
   has_many :products, dependent: :destroy
+  has_one :product_template, dependent: :destroy
   has_many :questions, dependent: :nullify
   has_many :pages,
            -> { order(updated_at: :desc, id: :desc) },
diff --git a/app/models/product_template.rb b/app/models/product_template.rb
new file mode 100644
index 00000000000..163036778d2
--- /dev/null
+++ b/app/models/product_template.rb
@@ -0,0 +1,6 @@
+class ProductTemplate < ApplicationRecord
+  belongs_to :practice
+
+  validates :description, presence: true
+  validates :practice, presence: true
+end
diff --git a/db/migrate/20260520061059_create_product_templates.rb b/db/migrate/20260520061059_create_product_templates.rb
new file mode 100644
index 00000000000..870b364ebbd
--- /dev/null
+++ b/db/migrate/20260520061059_create_product_templates.rb
@@ -0,0 +1,10 @@
+class CreateProductTemplates < ActiveRecord::Migration[8.1]
+  def change
+    create_table :product_templates do |t|
+      t.references :practice, null: false, foreign_key: true
+      t.text :description
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 99e52cbd229..ec3f6ea336c 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -632,6 +632,14 @@
     t.index ["report_id", "practice_id"], name: "index_practices_reports_on_report_id_and_practice_id"
   end
 
+  create_table "product_templates", force: :cascade do |t|
+    t.datetime "created_at", null: false
+    t.text "description"
+    t.bigint "practice_id", null: false
+    t.datetime "updated_at", null: false
+    t.index ["practice_id"], name: "index_product_templates_on_practice_id"
+  end
+
   create_table "products", force: :cascade do |t|
     t.text "body"
     t.bigint "checker_id"
@@ -1173,6 +1181,7 @@
   add_foreign_key "practices_books", "practices"
   add_foreign_key "practices_movies", "movies"
   add_foreign_key "practices_movies", "practices"
+  add_foreign_key "product_templates", "practices"
   add_foreign_key "products", "practices"
   add_foreign_key "products", "users"
   add_foreign_key "questions", "practices"

From 8034a2d0b2fcbb0f9370ddb79e503cd04a6a3ab6 Mon Sep 17 00:00:00 2001
From: koguchi-e <koguchi.e915@gmail.com>
Date: Wed, 20 May 2026 17:43:47 +0900
Subject: [PATCH 2/9] =?UTF-8?q?=E3=83=AB=E3=83=BC=E3=83=86=E3=82=A3?=
 =?UTF-8?q?=E3=83=B3=E3=82=B0=E3=82=92=E4=BF=AE=E6=AD=A3?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 config/routes/api.rb | 1 +
 1 file changed, 1 insertion(+)

diff --git a/config/routes/api.rb b/config/routes/api.rb
index 1b5e8e1d6b2..cf1d2e80324 100644
--- a/config/routes/api.rb
+++ b/config/routes/api.rb
@@ -85,6 +85,7 @@
       resources :comments, only: %i(create), controller: 'products/comments'
       resource :check, only: %i(create destroy), controller: 'products/check'
     end
+    resources :product_templates, only: %i(create update)
     resources :searchables, only: %i(index)
     resources :bookmarks, only: %i(index create destroy)
     resources :report_templates, only: %i(create update)

From 95cb0bf85abc2df0b4e18962452e7c6044cd6444 Mon Sep 17 00:00:00 2001
From: koguchi-e <koguchi.e915@gmail.com>
Date: Thu, 21 May 2026 16:31:41 +0900
Subject: [PATCH 3/9] =?UTF-8?q?product=20template=20view=E3=82=92=E8=BF=BD?=
 =?UTF-8?q?=E5=8A=A0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/views/api/product_templates/create.html.slim | 2 ++
 app/views/api/product_templates/update.html.slim | 2 ++
 app/views/products/_product_template.html.slim   | 0
 3 files changed, 4 insertions(+)
 create mode 100644 app/views/api/product_templates/create.html.slim
 create mode 100644 app/views/api/product_templates/update.html.slim
 create mode 100644 app/views/products/_product_template.html.slim

diff --git a/app/views/api/product_templates/create.html.slim b/app/views/api/product_templates/create.html.slim
new file mode 100644
index 00000000000..879b597592a
--- /dev/null
+++ b/app/views/api/product_templates/create.html.slim
@@ -0,0 +1,2 @@
+h1 API::ProductTemplates#create
+p Find me in app/views/api/product_templates/create.html.slim
diff --git a/app/views/api/product_templates/update.html.slim b/app/views/api/product_templates/update.html.slim
new file mode 100644
index 00000000000..6e2b44be1b2
--- /dev/null
+++ b/app/views/api/product_templates/update.html.slim
@@ -0,0 +1,2 @@
+h1 API::ProductTemplates#update
+p Find me in app/views/api/product_templates/update.html.slim
diff --git a/app/views/products/_product_template.html.slim b/app/views/products/_product_template.html.slim
new file mode 100644
index 00000000000..e69de29bb2d

From 535b264696d6f640732b2adcabec5b09d9666d84 Mon Sep 17 00:00:00 2001
From: koguchi-e <koguchi.e915@gmail.com>
Date: Fri, 22 May 2026 14:24:35 +0900
Subject: [PATCH 4/9] =?UTF-8?q?=E3=83=97=E3=83=A9=E3=82=AF=E3=83=86?=
 =?UTF-8?q?=E3=82=A3=E3=82=B9=E3=81=AE=E7=99=BB=E9=8C=B2=E3=83=BB=E4=BF=AE?=
 =?UTF-8?q?=E6=AD=A3=E7=94=BB=E9=9D=A2=E3=81=A7=E6=8F=90=E5=87=BA=E7=89=A9?=
 =?UTF-8?q?=E3=81=AE=E3=83=86=E3=83=B3=E3=83=97=E3=83=AC=E3=83=BC=E3=83=88?=
 =?UTF-8?q?=E3=82=92=E7=99=BB=E9=8C=B2=E3=81=A7=E3=81=8D=E3=82=8B=E3=82=88?=
 =?UTF-8?q?=E3=81=86=E4=BF=AE=E6=AD=A3?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../api/product_templates_controller.rb       | 31 -------------------
 .../mentor/practices_controller.rb            |  8 +++--
 app/models/practice.rb                        |  3 ++
 .../api/product_templates/create.html.slim    |  2 --
 .../api/product_templates/update.html.slim    |  2 --
 app/views/mentor/practices/_form.html.slim    | 13 ++++++++
 app/views/products/_form.html.slim            |  4 ++-
 config/locales/ja.yml                         |  3 ++
 config/routes/api.rb                          |  1 -
 db/schema.rb                                  |  4 +--
 10 files changed, 30 insertions(+), 41 deletions(-)
 delete mode 100644 app/controllers/api/product_templates_controller.rb
 delete mode 100644 app/views/api/product_templates/create.html.slim
 delete mode 100644 app/views/api/product_templates/update.html.slim

diff --git a/app/controllers/api/product_templates_controller.rb b/app/controllers/api/product_templates_controller.rb
deleted file mode 100644
index 75c6c2d20a4..00000000000
--- a/app/controllers/api/product_templates_controller.rb
+++ /dev/null
@@ -1,31 +0,0 @@
-class API::ProductTemplatesController < ApplicationController
-  before_action :set_product_template, only: %i[update]
-
-  def create
-    @template = ReportTemplate.new(product_template_params)
-    @practice = Practice.find(params[:practice])
-    if @template.save
-      render json: { id: @template.id }, status: :ok
-    else
-      head :bad_request
-    end
-  end
-
-  def update
-    if @template.update(product_template_params)
-      head :ok
-    else
-      head :bad_request
-    end
-  end
-
-  private
-
-  def product_template_params
-    params.require(:product_template).permit(:description)
-  end
-
-  def set_product_template
-    @template = Practice.find(params[:practice]).product_template
-  end
-end
diff --git a/app/controllers/mentor/practices_controller.rb b/app/controllers/mentor/practices_controller.rb
index 504b4014f94..16da4897979 100644
--- a/app/controllers/mentor/practices_controller.rb
+++ b/app/controllers/mentor/practices_controller.rb
@@ -12,9 +12,12 @@ def index
 
   def new
     @practice = Practice.new(pjord_review: true, pjord_auto_check: false)
+    @practice.build_product_template
   end
 
-  def edit; end
+  def edit
+    @practice.build_product_template unless @practice.product_template
+  end
 
   def create
     @practice = Practice.new(practice_params)
@@ -63,7 +66,8 @@ def practice_params
       :summary,
       :ogp_image,
       category_ids: [],
-      practices_books_attributes: %i[id book_id must_read _destroy]
+      practices_books_attributes: %i[id book_id must_read _destroy],
+      product_template_attributes: %i[id description]
     )
   end
 
diff --git a/app/models/practice.rb b/app/models/practice.rb
index 4cc6a1d4576..d187f7ea539 100644
--- a/app/models/practice.rb
+++ b/app/models/practice.rb
@@ -25,7 +25,10 @@ class Practice < ApplicationRecord # rubocop:todo Metrics/ClassLength
            source: :user
   has_many :skipped_practices, dependent: :destroy
   has_many :products, dependent: :destroy
+
   has_one :product_template, dependent: :destroy
+  accepts_nested_attributes_for :product_template, update_only: true, allow_destroy: true
+
   has_many :questions, dependent: :nullify
   has_many :pages,
            -> { order(updated_at: :desc, id: :desc) },
diff --git a/app/views/api/product_templates/create.html.slim b/app/views/api/product_templates/create.html.slim
deleted file mode 100644
index 879b597592a..00000000000
--- a/app/views/api/product_templates/create.html.slim
+++ /dev/null
@@ -1,2 +0,0 @@
-h1 API::ProductTemplates#create
-p Find me in app/views/api/product_templates/create.html.slim
diff --git a/app/views/api/product_templates/update.html.slim b/app/views/api/product_templates/update.html.slim
deleted file mode 100644
index 6e2b44be1b2..00000000000
--- a/app/views/api/product_templates/update.html.slim
+++ /dev/null
@@ -1,2 +0,0 @@
-h1 API::ProductTemplates#update
-p Find me in app/views/api/product_templates/update.html.slim
diff --git a/app/views/mentor/practices/_form.html.slim b/app/views/mentor/practices/_form.html.slim
index 9e2869249c6..f8e82ca260b 100644
--- a/app/views/mentor/practices/_form.html.slim
+++ b/app/views/mentor/practices/_form.html.slim
@@ -109,6 +109,19 @@
           = f.check_box :include_progress, class: 'a-toggle-checkbox'
           = f.label :include_progress
             | 進捗の計算に含むようにする場合はチェック
+
+  = f.fields_for :product_template do |pt|
+    .form-item
+      .row.js-markdown-parent
+        .col-md-6.col-xs-12
+          = pt.label :description, '提出物のテンプレート', class: 'a-form-label'
+          = pt.text_area :description,
+            class: 'a-text-input js-warning-form markdown-form__text-area js-markdown',
+            data: { 'preview': '.js-product-template-preview' }
+        .col-md-6.col-xs-12
+          .a-form-label プレビュー
+          .js-product-template-preview.a-long-text.is-md.markdown-form__preview
+
   .form-item
     .row.js-markdown-parent
       .col-md-6.col-xs-12
diff --git a/app/views/products/_form.html.slim b/app/views/products/_form.html.slim
index 821fbcd2132..b70ce74da30 100644
--- a/app/views/products/_form.html.slim
+++ b/app/views/products/_form.html.slim
@@ -9,8 +9,10 @@
             | 提出物
           .form-textarea
             .form-textarea__body
+              - template = @product.practice.product_template&.description
               = f.text_area :body, class: 'a-text-input js-warning-form js-markdown markdown-form__text-area',
-              data: { 'preview': '.js-preview', 'input': '.file-input' }
+              data: { 'preview': '.js-preview', 'input': '.file-input' },
+              value: @product.body.presence || template
             .form-textarea__footer
               .form-textarea__insert
                 label.a-file-insert.a-button.is-xs.is-text-reversal.is-block
diff --git a/config/locales/ja.yml b/config/locales/ja.yml
index 7e9b8bd0dc1..b5f2683cdd0 100644
--- a/config/locales/ja.yml
+++ b/config/locales/ja.yml
@@ -56,6 +56,7 @@ ja:
       answer: 回答
       correct_answer: 模範回答
       movie: 動画
+      product_template: 提出物テンプレート
     search_labels:
       practice: "プラク\nティス"
       event: "特別\nイベント"
@@ -183,6 +184,8 @@ ja:
         user: ユーザー
         practice: プラクティス
         body: 本文
+      product_template:
+        description: 提出物のテンプレート
       submission_answer:
         description: 内容
       company:
diff --git a/config/routes/api.rb b/config/routes/api.rb
index cf1d2e80324..1b5e8e1d6b2 100644
--- a/config/routes/api.rb
+++ b/config/routes/api.rb
@@ -85,7 +85,6 @@
       resources :comments, only: %i(create), controller: 'products/comments'
       resource :check, only: %i(create destroy), controller: 'products/check'
     end
-    resources :product_templates, only: %i(create update)
     resources :searchables, only: %i(index)
     resources :bookmarks, only: %i(index create destroy)
     resources :report_templates, only: %i(create update)
diff --git a/db/schema.rb b/db/schema.rb
index ec3f6ea336c..a44c09e95d0 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -634,10 +634,10 @@
 
   create_table "product_templates", force: :cascade do |t|
     t.datetime "created_at", null: false
-    t.text "description"
+    t.text "description", null: false
     t.bigint "practice_id", null: false
     t.datetime "updated_at", null: false
-    t.index ["practice_id"], name: "index_product_templates_on_practice_id"
+    t.index ["practice_id"], name: "index_product_templates_on_practice_id", unique: true
   end
 
   create_table "products", force: :cascade do |t|

From 5372b05ff3cde183a91814da9b42a570e139e69e Mon Sep 17 00:00:00 2001
From: koguchi-e <koguchi.e915@gmail.com>
Date: Fri, 22 May 2026 16:56:24 +0900
Subject: [PATCH 5/9] =?UTF-8?q?=E6=8F=90=E5=87=BA=E7=89=A9=E3=83=86?=
 =?UTF-8?q?=E3=83=B3=E3=83=97=E3=83=AC=E3=83=BC=E3=83=88=E3=81=AE=E3=83=86?=
 =?UTF-8?q?=E3=82=B9=E3=83=88=E3=82=92=E8=BF=BD=E5=8A=A0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/models/practice.rb                        |  2 +-
 app/models/product_template.rb                |  2 +
 .../products/_product_template.html.slim      |  0
 test/fixtures/product_templates.yml           |  3 ++
 test/system/practices/mentor_test.rb          | 47 +++++++++++++++++++
 5 files changed, 53 insertions(+), 1 deletion(-)
 delete mode 100644 app/views/products/_product_template.html.slim
 create mode 100644 test/fixtures/product_templates.yml

diff --git a/app/models/practice.rb b/app/models/practice.rb
index d187f7ea539..7e0f1ae6579 100644
--- a/app/models/practice.rb
+++ b/app/models/practice.rb
@@ -27,7 +27,7 @@ class Practice < ApplicationRecord # rubocop:todo Metrics/ClassLength
   has_many :products, dependent: :destroy
 
   has_one :product_template, dependent: :destroy
-  accepts_nested_attributes_for :product_template, update_only: true, allow_destroy: true
+  accepts_nested_attributes_for :product_template, update_only: true, allow_destroy: true, reject_if: proc { |attributes| attributes['description'].blank? }
 
   has_many :questions, dependent: :nullify
   has_many :pages,
diff --git a/app/models/product_template.rb b/app/models/product_template.rb
index 163036778d2..09b8bc805c7 100644
--- a/app/models/product_template.rb
+++ b/app/models/product_template.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 class ProductTemplate < ApplicationRecord
   belongs_to :practice
 
diff --git a/app/views/products/_product_template.html.slim b/app/views/products/_product_template.html.slim
deleted file mode 100644
index e69de29bb2d..00000000000
diff --git a/test/fixtures/product_templates.yml b/test/fixtures/product_templates.yml
new file mode 100644
index 00000000000..30e4110715e
--- /dev/null
+++ b/test/fixtures/product_templates.yml
@@ -0,0 +1,3 @@
+product_template1:
+  practice: practice1
+  description: 更新前テンプレート
diff --git a/test/system/practices/mentor_test.rb b/test/system/practices/mentor_test.rb
index 823668207d5..6b91f8dc973 100644
--- a/test/system/practices/mentor_test.rb
+++ b/test/system/practices/mentor_test.rb
@@ -21,6 +21,7 @@ class MentorTest < ApplicationSystemTestCase
         end
         fill_in 'practice[goal]', with: 'テストのゴールの内容です'
         fill_in 'practice[memo]', with: 'テストのメンター向けメモの内容です'
+        fill_in 'practice_product_template_attributes_description', with: 'テストテンプレート'
         uncheck 'practice[pjord_review]', allow_label_click: true
         click_button '登録する'
       end
@@ -28,6 +29,35 @@ class MentorTest < ApplicationSystemTestCase
       assert_not_predicate Practice.order(:created_at).last, :pjord_review?
     end
 
+    test 'can create practice without product template' do
+      visit_with_auth '/mentor/practices/new', 'komagata'
+
+      within 'form[name=practice]' do
+        fill_in 'practice[title]', with: 'テンプレなし'
+        check categories(:category1).name, allow_label_click: true
+        fill_in 'practice[description]', with: 'テストの内容です'
+        fill_in 'practice[goal]', with: 'テストのゴールの内容です'
+        click_button '登録する'
+      end
+
+      assert_text 'プラクティスを作成しました'
+      assert_not_predicate Practice.order(:created_at).last, :pjord_review?
+    end
+
+    test 'can create practice without product template' do
+      visit_with_auth '/mentor/practices/new', 'komagata'
+
+      within 'form[name=practice]' do
+        fill_in 'practice[title]', with: 'テンプレなし'
+        check categories(:category1).name, allow_label_click: true
+        fill_in 'practice[description]', with: 'テストの内容です'
+        fill_in 'practice[goal]', with: 'テストのゴールの内容です'
+        click_button '登録する'
+      end
+
+      assert_text 'プラクティスを作成しました'
+    end
+
     test 'create practice as a mentor' do
       visit_with_auth '/mentor/practices/new', 'mentormentaro'
       within 'form[name=practice]' do
@@ -39,6 +69,7 @@ class MentorTest < ApplicationSystemTestCase
         end
         fill_in 'practice[goal]', with: 'テストのゴールの内容です'
         fill_in 'practice[memo]', with: 'テストのメンター向けメモの内容です'
+        fill_in 'practice_product_template_attributes_description', with: 'テストテンプレート'
         click_button '登録する'
       end
       assert_text 'プラクティスを作成しました'
@@ -51,6 +82,7 @@ class MentorTest < ApplicationSystemTestCase
       within 'form[name=practice]' do
         fill_in 'practice[title]', with: 'テストプラクティス'
         fill_in 'practice[memo]', with: 'メンター向けのメモの内容です'
+        fill_in 'practice_product_template_attributes_description', with: 'テストテンプレート'
         within '#reference_books' do
           click_link '書籍を選択'
         end
@@ -60,6 +92,21 @@ class MentorTest < ApplicationSystemTestCase
       visit "/products/#{product.id}"
       check 'toggle-mentor-memo-body', allow_label_click: true, visible: false
       assert_text 'メンター向けのメモの内容です'
+
+      visit new_product_path(practice_id: practice.id)
+      assert_field 'product[body]', with: 'テストテンプレート'
+    end
+
+    test 'update product template' do
+      practice = practices(:practice1)
+      visit_with_auth "/mentor/practices/#{practice.id}/edit", 'komagata'
+      assert_field 'practice_product_template_attributes_description', with: '更新前テンプレート'
+      fill_in 'practice_product_template_attributes_description', with: '更新後テンプレート'
+      click_button '更新する'
+      assert_text 'プラクティスを更新しました'
+
+      visit new_product_path(practice_id: practice.id)
+      assert_field 'product[body]', with: '更新後テンプレート'
     end
 
     test 'add a book' do

From fee370fbd780e9db78e24c69df2c8ed9e405d3f2 Mon Sep 17 00:00:00 2001
From: koguchi-e <koguchi.e915@gmail.com>
Date: Tue, 26 May 2026 10:32:23 +0900
Subject: [PATCH 6/9] =?UTF-8?q?CodeRabbit=E6=8C=87=E6=91=98=E4=BA=8B?=
 =?UTF-8?q?=E9=A0=85=E4=BF=AE=E6=AD=A3?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/controllers/mentor/practices_controller.rb  |  2 +-
 app/models/product_template.rb                  |  1 -
 .../20260520061059_create_product_templates.rb  |  2 +-
 test/system/practices/mentor_test.rb            | 17 +++--------------
 4 files changed, 5 insertions(+), 17 deletions(-)

diff --git a/app/controllers/mentor/practices_controller.rb b/app/controllers/mentor/practices_controller.rb
index 16da4897979..4ef61f7abe7 100644
--- a/app/controllers/mentor/practices_controller.rb
+++ b/app/controllers/mentor/practices_controller.rb
@@ -67,7 +67,7 @@ def practice_params
       :ogp_image,
       category_ids: [],
       practices_books_attributes: %i[id book_id must_read _destroy],
-      product_template_attributes: %i[id description]
+      product_template_attributes: %i[id description _destroy]
     )
   end
 
diff --git a/app/models/product_template.rb b/app/models/product_template.rb
index 09b8bc805c7..eed70c79d72 100644
--- a/app/models/product_template.rb
+++ b/app/models/product_template.rb
@@ -4,5 +4,4 @@ class ProductTemplate < ApplicationRecord
   belongs_to :practice
 
   validates :description, presence: true
-  validates :practice, presence: true
 end
diff --git a/db/migrate/20260520061059_create_product_templates.rb b/db/migrate/20260520061059_create_product_templates.rb
index 870b364ebbd..0f18a84532a 100644
--- a/db/migrate/20260520061059_create_product_templates.rb
+++ b/db/migrate/20260520061059_create_product_templates.rb
@@ -1,7 +1,7 @@
 class CreateProductTemplates < ActiveRecord::Migration[8.1]
   def change
     create_table :product_templates do |t|
-      t.references :practice, null: false, foreign_key: true
+      t.references :practice, null: false, foreign_key: true, index: { unique: true }
       t.text :description
 
       t.timestamps
diff --git a/test/system/practices/mentor_test.rb b/test/system/practices/mentor_test.rb
index 6b91f8dc973..0db4b823114 100644
--- a/test/system/practices/mentor_test.rb
+++ b/test/system/practices/mentor_test.rb
@@ -41,21 +41,10 @@ class MentorTest < ApplicationSystemTestCase
       end
 
       assert_text 'プラクティスを作成しました'
-      assert_not_predicate Practice.order(:created_at).last, :pjord_review?
-    end
-
-    test 'can create practice without product template' do
-      visit_with_auth '/mentor/practices/new', 'komagata'
 
-      within 'form[name=practice]' do
-        fill_in 'practice[title]', with: 'テンプレなし'
-        check categories(:category1).name, allow_label_click: true
-        fill_in 'practice[description]', with: 'テストの内容です'
-        fill_in 'practice[goal]', with: 'テストのゴールの内容です'
-        click_button '登録する'
-      end
-
-      assert_text 'プラクティスを作成しました'
+      practice = Practice.find_by!(title: 'テンプレなし')
+      visit_with_auth "/mentor/practices/#{practice.id}/edit", 'komagata'
+      assert_empty find_field('practice_product_template_attributes_description').value
     end
 
     test 'create practice as a mentor' do

From f4c93ee8a38d25166dc09eee1978742134c1b7cd Mon Sep 17 00:00:00 2001
From: koguchi-e <koguchi.e915@gmail.com>
Date: Mon, 6 Jul 2026 10:59:56 +0900
Subject: [PATCH 7/9] =?UTF-8?q?ProductTemplate=E3=81=AEdescription?=
 =?UTF-8?q?=E3=81=ABNOT=20NULL=E5=88=B6=E7=B4=84=E3=82=92=E8=BF=BD?=
 =?UTF-8?q?=E5=8A=A0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 db/migrate/20260520061059_create_product_templates.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/db/migrate/20260520061059_create_product_templates.rb b/db/migrate/20260520061059_create_product_templates.rb
index 0f18a84532a..8f2842606a3 100644
--- a/db/migrate/20260520061059_create_product_templates.rb
+++ b/db/migrate/20260520061059_create_product_templates.rb
@@ -2,7 +2,7 @@ class CreateProductTemplates < ActiveRecord::Migration[8.1]
   def change
     create_table :product_templates do |t|
       t.references :practice, null: false, foreign_key: true, index: { unique: true }
-      t.text :description
+      t.text :description, null: false
 
       t.timestamps
     end

From 02b39ca5033430d61b314b1007ae1b9623e851f4 Mon Sep 17 00:00:00 2001
From: koguchi-e <koguchi.e915@gmail.com>
Date: Tue, 7 Jul 2026 10:39:10 +0900
Subject: [PATCH 8/9] =?UTF-8?q?=E6=8F=90=E5=87=BA=E7=89=A9=E3=83=86?=
 =?UTF-8?q?=E3=83=B3=E3=83=97=E3=83=AC=E3=83=BC=E3=83=88=E3=81=AE=E5=89=8A?=
 =?UTF-8?q?=E9=99=A4=E6=A9=9F=E8=83=BD=E3=81=AE=E8=BF=BD=E5=8A=A0?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/models/practice.rb                     |  5 +++-
 app/views/mentor/practices/_form.html.slim | 15 +++++++---
 test/fixtures/product_templates.yml        |  2 +-
 test/models/practice_test.rb               | 32 ++++++++++++++++++++++
 test/system/practice/products_test.rb      |  6 ++++
 test/system/practices/mentor_test.rb       | 15 +++++++++-
 6 files changed, 68 insertions(+), 7 deletions(-)

diff --git a/app/models/practice.rb b/app/models/practice.rb
index 7e0f1ae6579..6c0a2c8731e 100644
--- a/app/models/practice.rb
+++ b/app/models/practice.rb
@@ -27,7 +27,10 @@ class Practice < ApplicationRecord # rubocop:todo Metrics/ClassLength
   has_many :products, dependent: :destroy
 
   has_one :product_template, dependent: :destroy
-  accepts_nested_attributes_for :product_template, update_only: true, allow_destroy: true, reject_if: proc { |attributes| attributes['description'].blank? }
+  accepts_nested_attributes_for :product_template, update_only: true, allow_destroy: true,
+                                                   reject_if: proc { |attributes|
+                                                     attributes['_destroy'] != '1' && attributes['description'].blank?
+                                                   }
 
   has_many :questions, dependent: :nullify
   has_many :pages,
diff --git a/app/views/mentor/practices/_form.html.slim b/app/views/mentor/practices/_form.html.slim
index f8e82ca260b..dc98cc79ade 100644
--- a/app/views/mentor/practices/_form.html.slim
+++ b/app/views/mentor/practices/_form.html.slim
@@ -110,16 +110,23 @@
           = f.label :include_progress
             | 進捗の計算に含むようにする場合はチェック
 
-  = f.fields_for :product_template do |pt|
-    .form-item
+  .form-item
+    label.a-form-label
+      | 提出物のテンプレート
+    = f.fields_for :product_template do |pt|
+      - if pt.object.persisted?
+        .checkboxes
+          ul.checkboxes__items
+            li.checkboxes__item
+              = pt.check_box :_destroy, class: 'a-toggle-checkbox'
+              = pt.label :_destroy do
+                | 提出物のテンプレートを削除する
       .row.js-markdown-parent
         .col-md-6.col-xs-12
-          = pt.label :description, '提出物のテンプレート', class: 'a-form-label'
           = pt.text_area :description,
             class: 'a-text-input js-warning-form markdown-form__text-area js-markdown',
             data: { 'preview': '.js-product-template-preview' }
         .col-md-6.col-xs-12
-          .a-form-label プレビュー
           .js-product-template-preview.a-long-text.is-md.markdown-form__preview
 
   .form-item
diff --git a/test/fixtures/product_templates.yml b/test/fixtures/product_templates.yml
index 30e4110715e..fda6c8ee755 100644
--- a/test/fixtures/product_templates.yml
+++ b/test/fixtures/product_templates.yml
@@ -1,3 +1,3 @@
 product_template1:
   practice: practice1
-  description: 更新前テンプレート
+  description: 確認用テンプレート
diff --git a/test/models/practice_test.rb b/test/models/practice_test.rb
index a1a63c97d47..8cae194ea81 100644
--- a/test/models/practice_test.rb
+++ b/test/models/practice_test.rb
@@ -148,4 +148,36 @@ class PracticeTest < ActiveSupport::TestCase
     assert_equal initial_count + 1, practice.reports_count(include_source: false)
     assert_equal initial_count_including_source + 1, practice.reports_count(include_source: true)
   end
+
+  test 'does not create product template when description is blank' do
+    practice = practices(:practice1)
+    practice.product_template&.destroy!
+
+    assert_no_difference 'ProductTemplate.count' do
+      practice.update!(
+        product_template_attributes: {
+          description: ''
+        }
+      )
+    end
+
+    assert_nil practice.reload.product_template
+  end
+
+  test 'destroys product template with nested attributes' do
+    practice = practices(:practice1)
+    practice.product_template&.destroy!
+    product_template = practice.create_product_template!(description: '確認用テンプレート')
+
+    assert_difference 'ProductTemplate.count', -1 do
+      practice.update!(
+        product_template_attributes: {
+          id: product_template.id,
+          _destroy: '1'
+        }
+      )
+    end
+
+    assert_nil practice.reload.product_template
+  end
 end
diff --git a/test/system/practice/products_test.rb b/test/system/practice/products_test.rb
index e620b0806ae..d50bf6d0d65 100644
--- a/test/system/practice/products_test.rb
+++ b/test/system/practice/products_test.rb
@@ -7,4 +7,10 @@ class Practice::ProductsTest < ApplicationSystemTestCase
     visit_with_auth "/practices/#{practices(:practice1).id}/products", 'komagata'
     assert_equal 'OS X Mountain Lionをクリーンインストールするの提出物 | FBC', title
   end
+
+  test 'shows product template when product template exists' do
+    practice = practices(:practice1)
+    visit_with_auth "/mentor/practices/#{practice.id}/edit", 'komagata'
+    assert_field 'practice_product_template_attributes_description', with: '確認用テンプレート'
+  end
 end
diff --git a/test/system/practices/mentor_test.rb b/test/system/practices/mentor_test.rb
index 0db4b823114..1a31222c4aa 100644
--- a/test/system/practices/mentor_test.rb
+++ b/test/system/practices/mentor_test.rb
@@ -89,7 +89,7 @@ class MentorTest < ApplicationSystemTestCase
     test 'update product template' do
       practice = practices(:practice1)
       visit_with_auth "/mentor/practices/#{practice.id}/edit", 'komagata'
-      assert_field 'practice_product_template_attributes_description', with: '更新前テンプレート'
+      assert_field 'practice_product_template_attributes_description', with: '確認用テンプレート'
       fill_in 'practice_product_template_attributes_description', with: '更新後テンプレート'
       click_button '更新する'
       assert_text 'プラクティスを更新しました'
@@ -98,6 +98,19 @@ class MentorTest < ApplicationSystemTestCase
       assert_field 'product[body]', with: '更新後テンプレート'
     end
 
+    test 'deletes product template from practice edit form' do
+      practice = practices(:practice1)
+      visit_with_auth "/mentor/practices/#{practice.id}/edit", 'komagata'
+      check '提出物のテンプレートを削除する', allow_label_click: true
+
+      assert_difference 'ProductTemplate.count', -1 do
+        click_button '更新する'
+      end
+
+      assert_text 'プラクティスを更新しました'
+      assert_nil practice.reload.product_template
+    end
+
     test 'add a book' do
       practice = practices(:practice2)
       book = books(:book1)

From 43740965dfce118df9b1cbfac2dd20148e104d93 Mon Sep 17 00:00:00 2001
From: koguchi-e <koguchi.e915@gmail.com>
Date: Wed, 15 Jul 2026 17:29:35 +0900
Subject: [PATCH 9/9] =?UTF-8?q?product=5Ftemplate=E3=81=8B=E3=82=89templat?=
 =?UTF-8?q?e=E3=81=AB=E3=81=97=E3=80=81=E3=83=9D=E3=83=AA=E3=83=A2?=
 =?UTF-8?q?=E3=83=BC=E3=83=95=E3=82=A3=E3=83=83=E3=82=AF=E9=96=A2=E9=80=A3?=
 =?UTF-8?q?=E3=81=AB=E5=A4=89=E6=9B=B4?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../mentor/practices_controller.rb            |  6 +++---
 app/models/practice.rb                        | 10 +++++-----
 app/models/product_template.rb                |  7 -------
 app/models/template.rb                        |  7 +++++++
 app/views/mentor/practices/_form.html.slim    | 10 +++++-----
 app/views/products/_form.html.slim            |  2 +-
 config/locales/ja.yml                         |  3 ---
 ...20260520061059_create_product_templates.rb | 10 ----------
 db/migrate/20260520061059_create_templates.rb | 10 ++++++++++
 db/schema.rb                                  | 18 ++++++++---------
 test/fixtures/product_templates.yml           |  3 ---
 test/fixtures/templates.yml                   |  3 +++
 test/models/practice_test.rb                  | 20 +++++++++----------
 test/system/practice/products_test.rb         |  2 +-
 test/system/practices/mentor_test.rb          | 16 +++++++--------
 15 files changed, 62 insertions(+), 65 deletions(-)
 delete mode 100644 app/models/product_template.rb
 create mode 100644 app/models/template.rb
 delete mode 100644 db/migrate/20260520061059_create_product_templates.rb
 create mode 100644 db/migrate/20260520061059_create_templates.rb
 delete mode 100644 test/fixtures/product_templates.yml
 create mode 100644 test/fixtures/templates.yml

diff --git a/app/controllers/mentor/practices_controller.rb b/app/controllers/mentor/practices_controller.rb
index 4ef61f7abe7..a1d548eae6f 100644
--- a/app/controllers/mentor/practices_controller.rb
+++ b/app/controllers/mentor/practices_controller.rb
@@ -12,11 +12,11 @@ def index
 
   def new
     @practice = Practice.new(pjord_review: true, pjord_auto_check: false)
-    @practice.build_product_template
+    @practice.build_template
   end
 
   def edit
-    @practice.build_product_template unless @practice.product_template
+    @practice.build_template unless @practice.template
   end
 
   def create
@@ -67,7 +67,7 @@ def practice_params
       :ogp_image,
       category_ids: [],
       practices_books_attributes: %i[id book_id must_read _destroy],
-      product_template_attributes: %i[id description _destroy]
+      template_attributes: %i[id description _destroy]
     )
   end
 
diff --git a/app/models/practice.rb b/app/models/practice.rb
index 6c0a2c8731e..5c56075afc0 100644
--- a/app/models/practice.rb
+++ b/app/models/practice.rb
@@ -26,11 +26,11 @@ class Practice < ApplicationRecord # rubocop:todo Metrics/ClassLength
   has_many :skipped_practices, dependent: :destroy
   has_many :products, dependent: :destroy
 
-  has_one :product_template, dependent: :destroy
-  accepts_nested_attributes_for :product_template, update_only: true, allow_destroy: true,
-                                                   reject_if: proc { |attributes|
-                                                     attributes['_destroy'] != '1' && attributes['description'].blank?
-                                                   }
+  has_one :template, as: :templatable, dependent: :destroy
+  accepts_nested_attributes_for :template, update_only: true, allow_destroy: true,
+                                           reject_if: proc { |attributes|
+                                             attributes['_destroy'] != '1' && attributes['description'].blank?
+                                           }
 
   has_many :questions, dependent: :nullify
   has_many :pages,
diff --git a/app/models/product_template.rb b/app/models/product_template.rb
deleted file mode 100644
index eed70c79d72..00000000000
--- a/app/models/product_template.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-# frozen_string_literal: true
-
-class ProductTemplate < ApplicationRecord
-  belongs_to :practice
-
-  validates :description, presence: true
-end
diff --git a/app/models/template.rb b/app/models/template.rb
new file mode 100644
index 00000000000..c9d19efd539
--- /dev/null
+++ b/app/models/template.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class Template < ApplicationRecord
+  belongs_to :templatable, polymorphic: true
+
+  validates :description, presence: true
+end
diff --git a/app/views/mentor/practices/_form.html.slim b/app/views/mentor/practices/_form.html.slim
index dc98cc79ade..ccf4aebd039 100644
--- a/app/views/mentor/practices/_form.html.slim
+++ b/app/views/mentor/practices/_form.html.slim
@@ -113,17 +113,17 @@
   .form-item
     label.a-form-label
       | 提出物のテンプレート
-    = f.fields_for :product_template do |pt|
-      - if pt.object.persisted?
+    = f.fields_for :template do |template_form|
+      - if template_form.object.persisted?
         .checkboxes
           ul.checkboxes__items
             li.checkboxes__item
-              = pt.check_box :_destroy, class: 'a-toggle-checkbox'
-              = pt.label :_destroy do
+              = template_form.check_box :_destroy, class: 'a-toggle-checkbox'
+              = template_form.label :_destroy do
                 | 提出物のテンプレートを削除する
       .row.js-markdown-parent
         .col-md-6.col-xs-12
-          = pt.text_area :description,
+          = template_form.text_area :description,
             class: 'a-text-input js-warning-form markdown-form__text-area js-markdown',
             data: { 'preview': '.js-product-template-preview' }
         .col-md-6.col-xs-12
diff --git a/app/views/products/_form.html.slim b/app/views/products/_form.html.slim
index b70ce74da30..6fd023fba13 100644
--- a/app/views/products/_form.html.slim
+++ b/app/views/products/_form.html.slim
@@ -9,7 +9,7 @@
             | 提出物
           .form-textarea
             .form-textarea__body
-              - template = @product.practice.product_template&.description
+              - template = @product.practice.template&.description
               = f.text_area :body, class: 'a-text-input js-warning-form js-markdown markdown-form__text-area',
               data: { 'preview': '.js-preview', 'input': '.file-input' },
               value: @product.body.presence || template
diff --git a/config/locales/ja.yml b/config/locales/ja.yml
index b5f2683cdd0..7e9b8bd0dc1 100644
--- a/config/locales/ja.yml
+++ b/config/locales/ja.yml
@@ -56,7 +56,6 @@ ja:
       answer: 回答
       correct_answer: 模範回答
       movie: 動画
-      product_template: 提出物テンプレート
     search_labels:
       practice: "プラク\nティス"
       event: "特別\nイベント"
@@ -184,8 +183,6 @@ ja:
         user: ユーザー
         practice: プラクティス
         body: 本文
-      product_template:
-        description: 提出物のテンプレート
       submission_answer:
         description: 内容
       company:
diff --git a/db/migrate/20260520061059_create_product_templates.rb b/db/migrate/20260520061059_create_product_templates.rb
deleted file mode 100644
index 8f2842606a3..00000000000
--- a/db/migrate/20260520061059_create_product_templates.rb
+++ /dev/null
@@ -1,10 +0,0 @@
-class CreateProductTemplates < ActiveRecord::Migration[8.1]
-  def change
-    create_table :product_templates do |t|
-      t.references :practice, null: false, foreign_key: true, index: { unique: true }
-      t.text :description, null: false
-
-      t.timestamps
-    end
-  end
-end
diff --git a/db/migrate/20260520061059_create_templates.rb b/db/migrate/20260520061059_create_templates.rb
new file mode 100644
index 00000000000..5f08c8ab8bb
--- /dev/null
+++ b/db/migrate/20260520061059_create_templates.rb
@@ -0,0 +1,10 @@
+class CreateTemplates < ActiveRecord::Migration[8.1]
+  def change
+    create_table :templates do |t|
+      t.references :templatable, polymorphic: true, null: false, index: { unique: true }
+      t.text :description, null: false
+
+      t.timestamps
+    end
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index a44c09e95d0..2ad96e6add0 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -632,14 +632,6 @@
     t.index ["report_id", "practice_id"], name: "index_practices_reports_on_report_id_and_practice_id"
   end
 
-  create_table "product_templates", force: :cascade do |t|
-    t.datetime "created_at", null: false
-    t.text "description", null: false
-    t.bigint "practice_id", null: false
-    t.datetime "updated_at", null: false
-    t.index ["practice_id"], name: "index_product_templates_on_practice_id", unique: true
-  end
-
   create_table "products", force: :cascade do |t|
     t.text "body"
     t.bigint "checker_id"
@@ -1033,6 +1025,15 @@
     t.index ["user_id"], name: "index_talks_on_user_id"
   end
 
+  create_table "templates", force: :cascade do |t|
+    t.datetime "created_at", null: false
+    t.text "description", null: false
+    t.bigint "templatable_id", null: false
+    t.string "templatable_type", null: false
+    t.datetime "updated_at", null: false
+    t.index ["templatable_type", "templatable_id"], name: "index_templates_on_templatable", unique: true
+  end
+
   create_table "users", id: :serial, force: :cascade do |t|
     t.datetime "accessed_at", precision: nil
     t.boolean "admin", default: false, null: false
@@ -1181,7 +1182,6 @@
   add_foreign_key "practices_books", "practices"
   add_foreign_key "practices_movies", "movies"
   add_foreign_key "practices_movies", "practices"
-  add_foreign_key "product_templates", "practices"
   add_foreign_key "products", "practices"
   add_foreign_key "products", "users"
   add_foreign_key "questions", "practices"
diff --git a/test/fixtures/product_templates.yml b/test/fixtures/product_templates.yml
deleted file mode 100644
index fda6c8ee755..00000000000
--- a/test/fixtures/product_templates.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-product_template1:
-  practice: practice1
-  description: 確認用テンプレート
diff --git a/test/fixtures/templates.yml b/test/fixtures/templates.yml
new file mode 100644
index 00000000000..fbb7cdfdeba
--- /dev/null
+++ b/test/fixtures/templates.yml
@@ -0,0 +1,3 @@
+one:
+  templatable: practice1 (Practice)
+  description: 提出物のテンプレート
diff --git a/test/models/practice_test.rb b/test/models/practice_test.rb
index 8cae194ea81..183060fbf94 100644
--- a/test/models/practice_test.rb
+++ b/test/models/practice_test.rb
@@ -151,33 +151,33 @@ class PracticeTest < ActiveSupport::TestCase
 
   test 'does not create product template when description is blank' do
     practice = practices(:practice1)
-    practice.product_template&.destroy!
+    practice.template&.destroy!
 
-    assert_no_difference 'ProductTemplate.count' do
+    assert_no_difference 'Template.count' do
       practice.update!(
-        product_template_attributes: {
+        template_attributes: {
           description: ''
         }
       )
     end
 
-    assert_nil practice.reload.product_template
+    assert_nil practice.reload.template
   end
 
   test 'destroys product template with nested attributes' do
     practice = practices(:practice1)
-    practice.product_template&.destroy!
-    product_template = practice.create_product_template!(description: '確認用テンプレート')
+    practice.template&.destroy!
+    template = practice.create_template!(description: '提出物のテンプレート')
 
-    assert_difference 'ProductTemplate.count', -1 do
+    assert_difference 'Template.count', -1 do
       practice.update!(
-        product_template_attributes: {
-          id: product_template.id,
+        template_attributes: {
+          id: template.id,
           _destroy: '1'
         }
       )
     end
 
-    assert_nil practice.reload.product_template
+    assert_nil practice.reload.template
   end
 end
diff --git a/test/system/practice/products_test.rb b/test/system/practice/products_test.rb
index d50bf6d0d65..3599df705b1 100644
--- a/test/system/practice/products_test.rb
+++ b/test/system/practice/products_test.rb
@@ -11,6 +11,6 @@ class Practice::ProductsTest < ApplicationSystemTestCase
   test 'shows product template when product template exists' do
     practice = practices(:practice1)
     visit_with_auth "/mentor/practices/#{practice.id}/edit", 'komagata'
-    assert_field 'practice_product_template_attributes_description', with: '確認用テンプレート'
+    assert_field 'practice_template_attributes_description', with: '提出物のテンプレート'
   end
 end
diff --git a/test/system/practices/mentor_test.rb b/test/system/practices/mentor_test.rb
index 1a31222c4aa..0deeb064109 100644
--- a/test/system/practices/mentor_test.rb
+++ b/test/system/practices/mentor_test.rb
@@ -21,7 +21,7 @@ class MentorTest < ApplicationSystemTestCase
         end
         fill_in 'practice[goal]', with: 'テストのゴールの内容です'
         fill_in 'practice[memo]', with: 'テストのメンター向けメモの内容です'
-        fill_in 'practice_product_template_attributes_description', with: 'テストテンプレート'
+        fill_in 'practice_template_attributes_description', with: 'テストテンプレート'
         uncheck 'practice[pjord_review]', allow_label_click: true
         click_button '登録する'
       end
@@ -44,7 +44,7 @@ class MentorTest < ApplicationSystemTestCase
 
       practice = Practice.find_by!(title: 'テンプレなし')
       visit_with_auth "/mentor/practices/#{practice.id}/edit", 'komagata'
-      assert_empty find_field('practice_product_template_attributes_description').value
+      assert_empty find_field('practice_template_attributes_description').value
     end
 
     test 'create practice as a mentor' do
@@ -58,7 +58,7 @@ class MentorTest < ApplicationSystemTestCase
         end
         fill_in 'practice[goal]', with: 'テストのゴールの内容です'
         fill_in 'practice[memo]', with: 'テストのメンター向けメモの内容です'
-        fill_in 'practice_product_template_attributes_description', with: 'テストテンプレート'
+        fill_in 'practice_template_attributes_description', with: 'テストテンプレート'
         click_button '登録する'
       end
       assert_text 'プラクティスを作成しました'
@@ -71,7 +71,7 @@ class MentorTest < ApplicationSystemTestCase
       within 'form[name=practice]' do
         fill_in 'practice[title]', with: 'テストプラクティス'
         fill_in 'practice[memo]', with: 'メンター向けのメモの内容です'
-        fill_in 'practice_product_template_attributes_description', with: 'テストテンプレート'
+        fill_in 'practice_template_attributes_description', with: 'テストテンプレート'
         within '#reference_books' do
           click_link '書籍を選択'
         end
@@ -89,8 +89,8 @@ class MentorTest < ApplicationSystemTestCase
     test 'update product template' do
       practice = practices(:practice1)
       visit_with_auth "/mentor/practices/#{practice.id}/edit", 'komagata'
-      assert_field 'practice_product_template_attributes_description', with: '確認用テンプレート'
-      fill_in 'practice_product_template_attributes_description', with: '更新後テンプレート'
+      assert_field 'practice_template_attributes_description', with: '提出物のテンプレート'
+      fill_in 'practice_template_attributes_description', with: '更新後テンプレート'
       click_button '更新する'
       assert_text 'プラクティスを更新しました'
 
@@ -103,12 +103,12 @@ class MentorTest < ApplicationSystemTestCase
       visit_with_auth "/mentor/practices/#{practice.id}/edit", 'komagata'
       check '提出物のテンプレートを削除する', allow_label_click: true
 
-      assert_difference 'ProductTemplate.count', -1 do
+      assert_difference 'Template.count', -1 do
         click_button '更新する'
       end
 
       assert_text 'プラクティスを更新しました'
-      assert_nil practice.reload.product_template
+      assert_nil practice.reload.template
     end
 
     test 'add a book' do