From edadbf86ecb00f6e302d0d9f1a068efeb82d8777 Mon Sep 17 00:00:00 2001
From: s-choi <choi-suyeong@iij.ad.jp>
Date: Tue, 29 Sep 2026 16:08:10 +0900
Subject: [PATCH] =?UTF-8?q?[FIX]=20=E6=97=A2=E5=AD=98=E3=81=AE=E3=83=87?=
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MIME-Version: 1.0
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---
 .../demo/app/domain/service/impl/CourseServiceImpl.java     | 2 ++
 .../demo/app/presentation/controller/CourseController.java  | 6 +++++-
 src/main/resources/templates/select_course.html             | 3 ++-
 3 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/example/demo/app/domain/service/impl/CourseServiceImpl.java b/src/main/java/com/example/demo/app/domain/service/impl/CourseServiceImpl.java
index 59e0f99..6e7abac 100644
--- a/src/main/java/com/example/demo/app/domain/service/impl/CourseServiceImpl.java
+++ b/src/main/java/com/example/demo/app/domain/service/impl/CourseServiceImpl.java
@@ -133,6 +133,8 @@ public class CourseServiceImpl implements CourseService {
 		System.out.println("***********************ここでエラー1");
 		if (userEntity.getCourseEntity().getCourseId() == courseId) {
 			return "selected";
+		} else if (courseId <= 6) {
+			return "original";
 		}
 		System.out.println("***********************ここでエラー2");
 		allocationRepository.deleteByCourseId(courseId);
diff --git a/src/main/java/com/example/demo/app/presentation/controller/CourseController.java b/src/main/java/com/example/demo/app/presentation/controller/CourseController.java
index 7f047ba..257e6f4 100644
--- a/src/main/java/com/example/demo/app/presentation/controller/CourseController.java
+++ b/src/main/java/com/example/demo/app/presentation/controller/CourseController.java
@@ -141,9 +141,13 @@ public class CourseController {
 
 			return TransitionTargetPageNameKeyword.REDIRECT + TransitionTargetPageNameKeyword.COURSE;
 
+		} else if (condition.equals("original")) {
+			model.addAttribute("message", "既存のデータは削除できません");
+
+			return TransitionTargetPageNameKeyword.REDIRECT + TransitionTargetPageNameKeyword.COURSE;
 		} else if (condition.equals("ok")) {
 			return TransitionTargetPageNameKeyword.REDIRECT + TransitionTargetPageNameKeyword.COURSE;
-		}
+		} 
 		model.addAttribute("message", "エラーが発生しました");
 
 		return TransitionTargetPageNameKeyword.REDIRECT + TransitionTargetPageNameKeyword.COURSE;
diff --git a/src/main/resources/templates/select_course.html b/src/main/resources/templates/select_course.html
index 88419b5..912dfe8 100644
--- a/src/main/resources/templates/select_course.html
+++ b/src/main/resources/templates/select_course.html
@@ -36,7 +36,8 @@
 						aria-controls="'collapse' + ${course.courseId}">
 						<span th:text="${course.courseName}"></span>
 					</button>
-					<p style="width: 120px;"><button type="button" class="btn btn-danger w-100"
+					
+					<p th:if="${course.courseId > 6}" style="width: 120px;"><button type="button" class="btn btn-danger w-100"
 							th:attr="data-course-id=${course.courseId}" onclick="deleteCourse(this)">削除</button></p>
 				</h2>
 				<div th:id="'collapse' + ${course.courseId}" class="accordion-collapse collapse"