Django打印列表显示空白字段

Question

我正在尝试使用 Django 将数据库中的值列表打印到 html 页面上。

我有一个模型定义为：

class Drink(models.Model):
    drink_name = models.CharField(max_length=100)
    strength = models.IntegerField(default=0)
    def __str__(self):
        return self.drink_name

视图定义为：

from django.shortcuts import render

from .models import Drink

# Create your views here.
def index(request):
    served_drinks = Drink.objects.order_by('strength')
    context = {'served_drinks': served_drinks}
    return render(request, 'tavern/index.html', context)

还有一个模板：

<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Title</title>
</head>
<body>
Welcome to the tavern.<br><br>
{% if served_drinks %}
    <ul>
    {% for drink in served_drinks %}
        <li>{{ Drink.drink_name }} with a strength of {{ Drink.strength }}</li>
    {% endfor %}
    </ul>
{% else %}
    <p>No drinks are available.</p>
{% endif %}

{{served_drinks}}

</html>

模板运行时生成：

Welcome to the tavern.

with a strength of
with a strength of
with a strength of
with a strength of

<QuerySet [<Drink: Water>, <Drink: Wine>, <Drink: Ale>, <Drink: Black Ale>]>

我得到每件物品的一行，但没有drink_name。当我返回模板标签{{served_drinks}} 时，我可以看到那里的项目，所以我认为我的行有问题： <li>{{ Drink.drink_name }} with a strength of {{ Drink.strength }}</li>

为什么{{ Drink.drink_name }}在这种情况下不返回饮料的名称？

Answer 1

您的变量名有错字。 Drink 应该是 drink。

{% for drink in served_drinks %}
        <li>{{ Drink.drink_name }} with a strength of {{ Drink.strength}}</li>
{% endfor %}

更正的代码，

{% for drink in served_drinks %}
        <li>{{ drink.drink_name }} with a strength of {{ drink.strength}}</li>
{% endfor %}