CSV取込機能を実装し、Expenseモデルと関連するStore・ExpenseCategoryモデルを追加。CSVパーサーを作成し、出光CSVに対応。明細編集画面のAJAX保存機能を実装し、取込結果を表示する機能を追加。作業ログをdiary.mdに追記。

expenses/views.py

@@ -1,12 +1,97 @@
-from django.shortcuts import render
+import io
+import json
+from urllib.parse import urlencode
+
+import chardet
+from django.http import JsonResponse
+from django.shortcuts import redirect
+from django.shortcuts import get_object_or_404, render
+from django.views.decorators.http import require_POST
+
+from .services import import_csv_lines
+from .models import Expense, ExpenseCategory, Store
 
 
 def csv_upload(request):
-    return render(request, 'expenses/csv_upload.html')
+    context = {}
+    if request.method == 'POST' and request.FILES.get('csv_file'):
+        upload = request.FILES['csv_file']
+        raw = upload.read()
+        detected = chardet.detect(raw)
+        encoding = detected.get('encoding') or 'utf-8'
+        text = raw.decode(encoding, errors='ignore')
+        lines = io.StringIO(text)
+        result = import_csv_lines(lines)
+        query = urlencode(
+            {'imported': result.imported, 'duplicated': result.duplicated, 'encoding': encoding}
+        )
+        return redirect(f"/expenses/?{query}")
+    return render(request, 'expenses/csv_upload.html', context)
 
 
 def expense_list(request):
-    return render(request, 'expenses/expense_list.html')
+    expenses = Expense.objects.select_related('store', 'expense_category').order_by('-use_date', '-id')[:200]
+    stores = Store.objects.filter(is_active=True).order_by('name')
+    categories = ExpenseCategory.objects.filter(is_active=True).order_by('name')
+    return render(
+        request,
+        'expenses/expense_list.html',
+        {
+            'expenses': expenses,
+            'stores': stores,
+            'categories': categories,
+            'imported': request.GET.get('imported'),
+            'duplicated': request.GET.get('duplicated'),
+            'encoding': request.GET.get('encoding'),
+        },
+    )
+
+
+@require_POST
+def expense_update(request, expense_id: int):
+    try:
+        payload = json.loads(request.body.decode('utf-8'))
+    except json.JSONDecodeError:
+        return JsonResponse({'status': 'error', 'message': 'JSON形式が不正です。'}, status=400)
+    if not isinstance(payload, dict):
+        return JsonResponse({'status': 'error', 'message': 'JSONはオブジェクトで送信してください。'}, status=400)
+    expense = get_object_or_404(Expense, pk=expense_id)
+    fields = {}
+    for key in ('store_id', 'expense_category_id', 'is_business', 'note'):
+        if key in payload:
+            value = payload[key]
+            if value in ('', None):
+                fields[key] = None
+            else:
+                fields[key] = value
+    if 'store_id' in fields and fields['store_id'] is not None:
+        if not isinstance(fields['store_id'], int):
+            return JsonResponse({'status': 'error', 'message': 'store_idの型が不正です。'}, status=400)
+        if not Store.objects.filter(id=fields['store_id'], is_active=True).exists():
+            return JsonResponse({'status': 'error', 'message': 'store_idが不正です。'}, status=400)
+    if 'expense_category_id' in fields and fields['expense_category_id'] is not None:
+        if not isinstance(fields['expense_category_id'], int):
+            return JsonResponse({'status': 'error', 'message': 'expense_category_idの型が不正です。'}, status=400)
+        if not ExpenseCategory.objects.filter(
+            id=fields['expense_category_id'], is_active=True
+        ).exists():
+            return JsonResponse(
+                {'status': 'error', 'message': 'expense_category_idが不正です。'}, status=400
+            )
+    if 'is_business' in fields and fields['is_business'] is not None:
+        if not isinstance(fields['is_business'], bool):
+            return JsonResponse({'status': 'error', 'message': 'is_businessの型が不正です。'}, status=400)
+    if 'note' in fields and fields['note'] is not None:
+        if not isinstance(fields['note'], str):
+            return JsonResponse({'status': 'error', 'message': 'noteの型が不正です。'}, status=400)
+        if len(fields['note']) > 2000:
+            return JsonResponse({'status': 'error', 'message': 'noteが長すぎます。'}, status=400)
+    if fields:
+        for key, value in fields.items():
+            setattr(expense, key, value)
+        expense.human_confirmed = True
+        expense.save()
+    return JsonResponse({'status': 'ok'})
 
 
 def monthly_report(request):