Question

假设模型为：

ACCOUNT_UNDER = (
    ('Assets', 'Assets'),
    ('Bank', 'Bank'),
    ('Cash-in-Hand', 'Cash-in-Hand'),
)

class Account(MPTTModel):
    name = models.CharField(max_length=50, unique=True)
    parent = TreeForeignKey('self', on_delete=models.CASCADE, null=True, blank=True, related_name='children')
    under = models.CharField(max_length=100, choices=ACCOUNT_UNDER)

    class MPTTMeta:
        order_insertion_by = ['name']

class JournalVoucher(models.Model):
    date = models.DateField()


class Transaction(models.Model):
    voucher = models.ForeignKey(JournalVoucher, on_delete=models.CASCADE, blank=True, null=True)
    date = models.DateField(default=datetime.date.today)

class TransactionEntry(models.Model):
    transaction = models.ForeignKey(Transaction, on_delete=models.CASCADE, blank=True, null=True)
    account = models.ForeignKey(Account, on_delete=models.CASCADE, related_name="transaction_entries")
    debit = models.DecimalField(max_digits=15, decimal_places=2, null=True, blank=True)
    credit = models.DecimalField(max_digits=15, decimal_places=2, null=True, blank=True)

class Ledger(models.Model):
    account_name = models.CharField(max_length=254)

class LedgerEntry(models.Model):
    ledger = models.ForeignKey(Ledger, on_delete=models.CASCADE, blank=True, null=True)
    date = models.DateField()
    account = models.ForeignKey(Account, on_delete=models.CASCADE, related_name="debit_account")
    debit = models.DecimalField(max_digits=15, decimal_places=2, null=True, blank=True)
    credit = models.DecimalField(max_digits=15, decimal_places=2, null=True, blank=True)
    balance = models.DecimalField(max_digits=15, decimal_places=2, null=True, blank=True)

在django管理员中，

#using django-nested-admin
from django.contrib import admin

import nested_admin

class TransactionEntryInline(nested_admin.NestedTabularInline):
    model = TransactionEntry
    extra = 0


class TransactionInline(nested_admin.NestedStackedInline):
    model = Transaction
    inlines = [TransactionEntryInline]
    extra = 0


@admin.register(JournalVoucher)
class JournalVoucherAdmin(nested_admin.NestedModelAdmin):
    inlines = [TransactionInline]

会计示例：

Jan. 10   Creative Advertising obtained a loan of Rs. 20,000 from the bank.

日记凭证

Date   Account   Debit  Credit
Jan 10 Cash      20,000 
       Bank Loan        20,000

分类帐：

银行贷款帐户

Date Account Amount Date   Account Amount
                        Jan 10 Cash        20,000

现金帐户

Date   Account Amount Date   Account Amount
Jan 10 Bank Loan   20,000

问题

保存后保存信号的顺序为： JournalVoucher > Transaction > TransactionEntry
TransactionEntry可能是现金或银行贷款，但一次都不能同时显示信号
但是要创建分类帐，两个交易条目都是必需的。在银行贷款帐户中，需要银行以及现金帐户

目标：

我想在日记凭证保存时自动创建分类帐及其各自的分类帐条目

在Django中使用信号创建相关模型的另一个模型

0 个答案: