我無法從視圖訪問類中的deposit()方法。Account給我錯(cuò)誤：deposit() missing 1 required positional argument: 'amount' 我正在調(diào)用該方法：Account.deposit(amount)意見： def home(request): return render(request, 'automatedbankteller/home.html') def about(request): return render(request, 'automatedbankteller/about.html') @login_required def transactions(request): context = { 'transactions': Transaction.objects.filter(sender=request.user) } return render(request, 'automatedbankteller/transactions.html', context) @login_required def my_accounts(request): context = { 'accounts': Account.objects.filter(account_owner=request.user) } return render(request, 'automatedbankteller/my_accounts.html', context) @login_required def deposit(request): if request.method == 'POST': form = UserDepositForm(request.POST) if form.is_valid(): amount = request.POST['amount'] print(amount) Account.deposit(amount) #form.save() messages.success(request, f'The amount has been deposited into your account!') return redirect('ABT-my_accounts') else: form = UserDepositForm(instance=request.user) return render(request, 'automatedbankteller/deposit.html', {'form': form})楷模： class Account(models.Model): ACCOUNT_TYPES = ( ('SA', 'Savings'), ('CA', 'Checking'), ) accountID = models.IntegerField() account_amount = models.DecimalField(max_digits=20, decimal_places=2) account_type = models.CharField(max_length=2, choices=ACCOUNT_TYPES) account_owner = models.ForeignKey(User, on_delete=models.CASCADE) def __str__(self): return str(self.accountID) def get_balance(self): return self.account_amount def deposit(self, amount): self.account_amount = self.account_amount + amount return
2 回答
幕布斯6054654
TA貢獻(xiàn)1876條經(jīng)驗(yàn) 獲得超7個(gè)贊
Account.deposit(amount) 這里 Account 是 class 。您需要在此類的實(shí)例上調(diào)用 deposit 方法，例如。
account = Account.objects.get(id=1)
account.deposit(amount)
德瑪西亞99
TA貢獻(xiàn)1770條經(jīng)驗(yàn) 獲得超3個(gè)贊
您deposit()需要兩個(gè)參數(shù) - 類實(shí)例和數(shù)量。所以需要先創(chuàng)建Account實(shí)例，然后使用方法。此外，由于您沒有返回更新的金額，您可以save()在方法本身內(nèi)部調(diào)用方法。
class Account(models.Model):
...
def deposit(self, amount):
self.account_amount = self.account_amount + amount
self.save()
return
您需要先調(diào)用deposit實(shí)例。
# views.py
@login_required
def deposit(request):
if request.method == 'POST':
form = UserDepositForm(request.POST)
if form.is_valid():
amount = request.POST['amount']
print(amount)
account = form.save(commit=False) #no commit in DB
account.deposit(amount) # use class instance
messages.success(request, f'The amount has been deposited into your account!')
return redirect('ABT-my_accounts')
else:
form = UserDepositForm(instance=request.user)
return render(request, 'automatedbankteller/deposit.html', {'form': form})
您也可以從該deposit方法返回更新后的金額，但您需要save()自己調(diào)用。
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