Django - 从ModelForm获取模型对象属性

时间:2017-02-15 10:30:44

标签: python django

我有一个ModelFormSet:

TransactionFormSet = modelformset_factory(Transaction, exclude=("",))

使用这个模型:

class Transaction(models.Model):
    account = models.ForeignKey(Account)
    date = models.DateField()
    payee = models.CharField(max_length = 100)
    categories = models.ManyToManyField(Category)
    comment = models.CharField(max_length = 1000)
    outflow = models.DecimalField(max_digits=10, decimal_places=3)
    inflow = models.DecimalField(max_digits=10, decimal_places=3)
    cleared = models.BooleanField()

这是模板:

{% for transaction in transactions %}
<ul>
    {% for field in transaction %}
        {% ifnotequal field.label 'Id' %}
        {% ifnotequal field.value None %}
            {% ifequal field.label 'Categories' %}
                // what do i do here?
            {% endifequal %}
            <li>{{ field.label}}: {{ field.value }}</li>
        {% endifnotequal %}
        {% endifnotequal %}
    {% endfor %}
</ul>
{% endfor %}

观点:

def transactions_on_account_view(request, account_id):
    if request.method == "GET":
        transactions = TransactionFormSet(queryset=Transaction.objects.for_account(account_id))
        context = {"transactions":transactions}
        return render(request, "transactions/transactions_for_account.html", context)

我想在页面上列出所有交易信息。 如何列出交易的“账户”属性和“类别”? 目前模板只显示他们的id,我希望为用户提供一个很好的表示(最好是来自他们的 str ()方法)。

我能看到的唯一方法是迭代FormSet,获取Account和Category对象的ID,通过Id获取对象并将我想要的信息存储在列表中,然后从那里拉出来在模板中,但这对我来说似乎相当可怕。

有更好的方法吗?

1 个答案:

答案 0 :(得分:0)

感谢这些评论,我发现我所做的事情非常愚蠢而毫无意义。

这有效:

1)获取所有交易对象

transactions = Transaction.objects.for_account(account_id)

2)传递给模板

context = {"transactions":transactions,}
    return render(request, "transactions/transactions_for_account.html", context)

3)访问属性,完成

  {% for transaction in transactions %}
  <tr>
    <td class="tg-6k2t">{{ transaction.account }}</td>
    <td class="tg-6k2t">{{ transaction.categories }}</td>
    <td class="tg-6k2t">{{ transaction.date }}</td>
    <td class="tg-6k2t">{{ transaction.payee }}</td>
    <td class="tg-6k2t">{{ transaction.comment }}</td>
    <td class="tg-6k2t">{{ transaction.outflow }}</td>
    <td class="tg-6k2t">{{ transaction.inflow }}</td>
    <td class="tg-6k2t">{{ transaction.cleared }}</td>
  </tr>
  {% endfor %}