Question

我在加入或正确格式化模板方面遇到了一些麻烦...我是新人，并且自学了很多，但我在查询和陈述方面遇到了麻烦。

到目前为止我所拥有的是：

输出

June 13, 2016 June 14, 2016
Item    Amount  Amount
Cars    10800.00
Tires   156400.00
10200.00
156001.00
About

我想要的是获得第二个＆＃34;在下一个金额列下输出。我没有做出正确的查询吗？

模板/索引

<body>

    {% if data %}
    {% if date %}
    {{ date.date }}
    {% endif %}
    <table>
            <tr>
                <th>List Item</th>
                <th>Amount</th>
                <th>Amount</th>
            </tr>
            <tr>
            {% for firstdata in data %}
            <td>{{ firstdata.item }}</td>
            <td>{{ firstdata.amount }}</td>
            </tr>
            {% endfor %}
            {% for firstdata in data1 %}
            <td>{{ firstdata.amount }}</td>
            </tr>
            {% endfor %}
    {% else %}
        <strong>There are no categories present.</strong>
    {% endif %}
    </table>

    <a href="/rango/about/">About</a>
</body>

views.py

def index(request):

context_dict = {}
statement = "Sales"
try:
    now = datetime.date.today()
    recentdate = StatementData.objects.order_by('date').distinct('date').filter(date__lte=now).reverse()[0]
    context_dict['date'] = recentdate
    first_statement = StatementData.objects.order_by('-id').filter(date=recentdate.date).values('item', 'amount')
    context_dict['data'] = first_statement

    now = datetime.date.today()
    recentdate1 = StatementData.objects.order_by('date').distinct('date').filter(cik=cik, date__lte=now).reverse()[1]
    #context_dict['date1'] = recentdate1
    second_statement = StatementData.objects.order_by('-id').filter(date=recentdate1.date).values('amount')
    #second_statement = StatementData.objects.order_by('-id').filter(date=recentdate1.date).values('id')
    context_dict['data1'] = second_statement

    #two_dates = first_statement | second_statement
    #context_dict['data1'] = two_dates

except StatementData.DoesNotExist:
    # We get here if we didn't find the specified category.
    # Don't do anything - the template displays the "no category" message for us.
    pass

# Go render the response and return it to the client.
return render(request, 'profit/index.html', context_dict)

Answer 1

有三种解决方案：

1）通过制作第二个＆＃34; Amount ＆＃34;来操纵前端。列作为原始表格之外的另一个单独表格，然后将这两个表格的显示属性设置为＆＃34; 内嵌块＆＃ 34 ;. 因此，将它们对齐并排。虽然以上一般不是一个好的方法

2）将另一个字段添加到 StatementData模型中说＆＃34; Amount2＆＃34;正如John Gordon评论的那样。这样，您就可以在“数据”和“数据”中同时使用金额和金额2。因此可以简单地写：

    {% for firstdata in data %}
        <td>{{ firstdata.item }}</td>
        <td>{{ firstdata.amount }}</td>
        <td>{{ firstdata.amount2 }}</td>
        </tr>
    {% endfor %}

但是我在两个不同的日期遇到了这些两个不同数量的同一项的问题。所以从技术上讲，你的模型中没有Amount的两个字段。

3）从技术上讲，这是解决问题的理想解决方案，这与John Gordan试图说的一样，将整体视为一个对象。

你需要在你的视图中定义一个类，然后说＆＃34; Angell＆＃34;并在其中定义三个变量说＆＃34; obj＆＃34; ，＆＃34; amount1＆＃34;，＆＃34; amount2＆＃34; 现在，您需要列出Angell类的对象列表，您可以在HTML中访问它们。以下是实现相同的代码：

  class Angell:

       def __init__(self, obj, amount1, amount2):
           self.obj = obj
           self.amount1 = amount1
           self.amount2 = amount2


  def index(request):

      context_dict = {}
      statement = "Sales"
      try:
          now = datetime.date.today()
          recentdate = StatementData.objects.order_by('date').distinct('date').filter(date__lte=now).reverse()[0]
          context_dict['date'] = recentdate
          first_statement = StatementData.objects.order_by('-id').filter(date=recentdate.date).values('item', 'amount')
          #context_dict['data'] = first_statement

          now = datetime.date.today()
          recentdate1 = StatementData.objects.order_by('date').distinct('date').filter(cik=cik, date__lte=now).reverse()[1]
          #context_dict['date1'] = recentdate1
          second_statement = StatementData.objects.order_by('-id').filter(date=recentdate1.date).values('amount')
          #second_statement = StatementData.objects.order_by('-id').filter(date=recentdate1.date).values('id')
          #context_dict['data1'] = second_statement

          #two_dates = first_statement | second_statement
          #context_dict['data1'] = two_dates

          n = len(first_statement) #this should be equal to length of second_statement

          i = 0
          some_list = []

          while i < n:
              itm = first_statement[i].item
              amt1 = first_statement[i].amount
              amt2 = second_statement[i].amount

              Harp = Angell(itm, amt1, amt2)
              some_list.append(Harp)

              i += 1

          context_dict[data] = some_list


      except StatementData.DoesNotExist:
          # We get here if we didn't find the specified category.
          # Don't do anything - the template displays the "no category" message for us.
          pass

      # Go render the response and return it to the client.
      return render(request, 'profit/index.html', context_dict)

现在您的HTML看起来像这样：

    {% for firstdata in data %}
        <tr>
            <td>{{ firstdata.obj }}</td>
            <td>{{ firstdata.amount1 }}</td>
            <td>{{ firstdata.amount2 }}</td>
        </tr>
    {% endfor %}

我希望这对你有用。

请查看关于django声明的信息

1 个答案: