ドキュメント更新（6ファイル）

03_データ仕様書.md — 全面書き直し（M:N関係、中山間17列モデル、面積単位、PDF出力仕様）
04_画面設計書.md — 全面書き直し（Navbar追加、圃場管理/新規作成画面追加、インライン編集方式、PDF帳票フォーマット仕様 E-1）
01_プロダクトビジョン.md — CSV→PDF、M:1→M:N
05_実装優先順位.md — CSV→PDF、Django 5.0→5.2、モーダル→インライン、init_crops削除
00_Gemini向け統合指示書.md — CSV→PDF、Django 5.2、M:N関係、中山間17列モデル、init_crops削除、IsAuthenticated
CLAUDE.md — 既知の課題一覧、次タスク優先順追加、中山間モデル拡張、差異レポートリンク
コード修正（4件）
D-1: reports/views.py — plan.crop / plan.variety の null チェック追加
D-2: init_crops.py を削除
D-3: settings.py — LANGUAGE_CODE/TIME_ZONE の二重定義を解消
D-4: settings.py — AllowAny → IsAuthenticated に変更
次のタスクは CLAUDE.md の優先順リストに従うと A-8（圃場詳細に共済/中山間情報表示）です。続けますか？

backend/apps/plans/management/commands/init_crops.py

@@ -1,38 +0,0 @@
-from django.core.management.base import BaseCommand
-from apps.plans.models import Crop, Variety
-
-
-class Command(BaseCommand):
-    help = 'Initialize crops and varieties master data'
-
-    def handle(self, *args, **options):
-        crops_data = [
-            {
-                'name': '水稲',
-                'varieties': ['コシヒカリ', 'ひとめぼれ', 'あきたこまち', 'つや姫', 'oniai']
-            },
-            {
-                'name': '大豆',
-                'varieties': ['タマホマレ', 'エンレイ', 'ミヤギром']
-            },
-            {
-                'name': '小麦',
-                'varieties': ['キタノカオリ', 'ホウライ']
-            },
-            {
-                'name': 'そば',
-                'varieties': ['信濃一号', 'はるか']
-            },
-            {
-                'name': 'とうきび',
-                'varieties': ['ゴールdent']
-            },
-        ]
-
-        for crop_data in crops_data:
-            crop, _ = Crop.objects.get_or_create(name=crop_data['name'])
-            for variety_name in crop_data['varieties']:
-                Variety.objects.get_or_create(crop=crop, name=variety_name)
-            self.stdout.write(f'{crop.name}: {len(crop_data["varieties"])} varieties')
-
-        self.stdout.write(self.style.SUCCESS('Successfully initialized crops and varieties'))

backend/apps/reports/views.py

@@ -1,4 +1,3 @@
-from django.shortcuts import render
 from django.template.loader import render_to_string
 from django.http import HttpResponse
 from weasyprint import HTML
@@ -8,25 +7,25 @@ from apps.plans.models import Plan
 
 def generate_kyosai_pdf(request, year):
     kyosai_fields = OfficialKyosaiField.objects.all()
-    
+
     data = []
     for kyosai in kyosai_fields:
         related_fields = kyosai.fields.all()
         plans = Plan.objects.filter(field__in=related_fields, year=year)
-        
+
         crops = {}
         total_area = 0
         for plan in plans:
-            crop_name = plan.crop.name
+            crop_name = plan.crop.name if plan.crop else '未設定'
             if crop_name not in crops:
                 crops[crop_name] = {
                     'name': crop_name,
-                    'variety': plan.variety.name,
+                    'variety': plan.variety.name if plan.variety else '',
                     'count': 0
                 }
             crops[crop_name]['count'] += 1
             total_area += float(plan.field.area_tan)
-        
+
         data.append({
             'kyosai': kyosai,
             'fields': related_fields,
@@ -34,14 +33,14 @@ def generate_kyosai_pdf(request, year):
             'total_area': total_area,
             'field_count': related_fields.count()
         })
-    
+
     html_string = render_to_string('reports/kyosai_template.html', {
         'year': year,
         'data': data
     })
-    
+
     pdf = HTML(string=html_string).write_pdf()
-    
+
     response = HttpResponse(pdf, content_type='application/pdf')
     response['Content-Disposition'] = f'attachment; filename="kyosai_{year}.pdf"'
     return response
@@ -49,25 +48,25 @@ def generate_kyosai_pdf(request, year):
 
 def generate_chusankan_pdf(request, year):
     chusankan_fields = OfficialChusankanField.objects.all()
-    
+
     data = []
     for chusankan in chusankan_fields:
         related_fields = chusankan.fields.all()
         plans = Plan.objects.filter(field__in=related_fields, year=year)
-        
+
         crops = {}
         total_area = 0
         for plan in plans:
-            crop_name = plan.crop.name
+            crop_name = plan.crop.name if plan.crop else '未設定'
             if crop_name not in crops:
                 crops[crop_name] = {
                     'name': crop_name,
-                    'variety': plan.variety.name,
+                    'variety': plan.variety.name if plan.variety else '',
                     'count': 0
                 }
             crops[crop_name]['count'] += 1
             total_area += float(plan.field.area_tan)
-        
+
         data.append({
             'chusankan': chusankan,
             'fields': related_fields,
@@ -75,14 +74,14 @@ def generate_chusankan_pdf(request, year):
             'total_area': total_area,
             'field_count': related_fields.count()
         })
-    
+
     html_string = render_to_string('reports/chusankan_template.html', {
         'year': year,
         'data': data
     })
-    
+
     pdf = HTML(string=html_string).write_pdf()
-    
+
     response = HttpResponse(pdf, content_type='application/pdf')
     response['Content-Disposition'] = f'attachment; filename="chusankan_{year}.pdf"'
     return response

backend/keinasystem/settings.py

@@ -110,9 +110,9 @@ AUTH_PASSWORD_VALIDATORS = [
 # Internationalization
 # https://docs.djangoproject.com/en/5.2/topics/i18n/
 
-LANGUAGE_CODE = 'en-us'
+LANGUAGE_CODE = 'ja'
 
-TIME_ZONE = 'UTC'
+TIME_ZONE = 'Asia/Tokyo'
 
 USE_I18N = True
 
@@ -134,7 +134,7 @@ REST_FRAMEWORK = {
         'rest_framework_simplejwt.authentication.JWTAuthentication',
     ),
     'DEFAULT_PERMISSION_CLASSES': (
-        'rest_framework.permissions.AllowAny',
+        'rest_framework.permissions.IsAuthenticated',
     ),
 }
 
@@ -148,7 +148,3 @@ CORS_ALLOWED_ORIGINS = [
     "http://localhost:3000",
     "http://127.0.0.1:3000",
 ]
-
-LANGUAGE_CODE = 'ja'
-
-TIME_ZONE = 'Asia/Tokyo'