views.py

Question

我正在学习django。我有一个名为customer的简单模型。这是我的模特：

class Year(models.Model):
    year = models.CharField(max_length=255)
    created_at = models.DateTimeField(auto_now=False, auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True, auto_now_add=False)

    def __unicode__(self):
        return self.year

    def __str__(self):
        return self.year


class Customer(models.Model):
    name = models.CharField(max_length=255)
    created_at = models.DateTimeField(auto_now=False, auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True, auto_now_add=False)

    def __unicode__(self):
        return self.name

    def __str__(self):
        return self.name


class Product(models.Model):
    customer_name = models.ForeignKey(Customer, on_delete=models.CASCADE)
    quantity = models.CharField(max_length=255)
    year = models.ForeignKey(Year, on_delete=models.CASCADE)
    created_at = models.DateTimeField(auto_now=False, auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True, auto_now_add=False)

    def __unicode__(self):
        return self.score

    def __str__(self):
        return self.score

并且查看是：来自django.shortcuts导入渲染，get_object_or_404，重定向来自.models导入客户，产品，年份

views.py

def home(request):
    customers = Customer.objects.all()
    years = Year.objects.all().values_list('year', flat=True).asc() # List of year name 
    rows = []
    for year in years:
        row = [year] + [None] * len(customers) # Row with year in first column, and the rest init with same size of customers list
        for idx, customer in enumerate(customers):
            quantities = customer.product_set.filter(year__year=year).valu e_list('quantity', flat=True) # filter product by year. That can return multiple product !!! 
            row[idx + 1] = ' ,'.join(quantities) # create a string of quantities
        rows.append(row) # Add new row in our rows list
    context = {'customers': customer,
               'rows': rows}
    return render(request, 'customer.html', context)

模板：

{% extends 'base.html' %}
{% block customer %}
<div class="container">
  <h2>Players Table</h2>
  <p>Customer with Product</p>
  <table class="table">
    <thead>
      <tr>
          <th>Year/Product</th>
          {% for customer in customers %}
              <th>{{ customer.name }}</th>
          {% endfor %}
      </tr>
    </thead>
      <tbody>
        {% for row in rows %}
            <tr>
                {% for cell in row %}
                    <th class="">{{cell}}</th>
                {% endfor %}
            </tr>
        {% endfor %}
      </tbody>
  </table>
</div>

现在我希望在每一行的单元格中，这将是类并返回客户名称，就像 <th class='Customer Name 1'> 454</th> 行的每个单元格都将返回客户名称和产品。请尽早帮助我。

Answer 1

考虑模板中的显示格式，您需要使用如下的词典列表：

<强>视图

def home(request):
customers = Customer.objects.all()
years = Year.objects.all().values_list('year', flat=True).asc() # List of year name 
result= []
for year in years:
   row = {year: []} # Row with year as key
    for idx, customer in enumerate(customers):
        quantities = customer.product_set.filter(year__year=year).value_list('quantity', flat=True) # filter product by year. That can return multiple product !!! 
        row[year].append({customer: ' ,'.join(quantities)}) #  {'2017': [{'A': '2 ,2 ,3'}]}
    result.append(row) #  Create list of dicts  [{'2017': [{'A': '2 ,2 ,3'}, {'B': '2 ,2 ,3'}, {'C': '2 ,2 ,3'}]}, {'2016': [{'A': '2 ,2 ,3'}, {'B': '2 ,2 ,3'}, {'C': '2 ,2 ,3'}]}]

context = {'customers': customer, 'result': result}
return render(request, 'customer.html', context)

<强>模板：

<tbody>
{% for data in result %}
    {% for year, cust_prod_data in data.items %}
        <tr>
            <th>{{year}}</th>
            {% for cust_prod in cust_prod_data %}
                {% for customer_name, prod_qty  in cust_prod.items %}
                    <th class="{{customer_name}}">{{prod_qty}}</th>
                {% endfor %}
            {% endfor %}
        </tr>
    {% endfor %}
{% endfor %}
</tbody>

如何在python django中的表格单元格中设置类名？

views.py

1 个答案: