Question

我尝试使用视图来创建一个表（我后来想用数据填充它）。但是，如果我打开相应的网址，视图会创建一个＆＃34;名称＆＃39; context＆＃39;没有定义＆＃34;错误。谁能解释一下？

def room_overview(request, year, month):
    rooms = Room.objects.all()
    long_month = ['01', '03', '05', '07', '08', '10', '12']
    short_month = ['04','06','09','11']
    if month in long_month:
        month_max = 31
    elif month in short_month:
        month_max = 30
    elif year % 4 == 0 and year %100 != 0 or year % 400 == 0:
        month_max = 29
    else:
        month_max = 28

    days = []
    for i in range(1, month_max + 1):
        days.append(str(i))

    context['rooms'] = rooms
    context['days'] = days
    context['month'] = month
    context['year'] = year

    return render(request, 'hotel/overview.html', context)

视图的模板如下所示：

<h2>Overview {{month}}/{{year}}:</h2>
<div class="overview">
<table class="table table-condensed">
    <tr>
        {% for day in days %}
        <th>day</th>
        {% endfor %}
    </tr>

{% for room in rooms %}
<tr>
    <td>{{ room.name }}</td>
    {% for day in days %}
    <td> 1 </td>
    {% endfor %}
</tr>
{% endfor %}
</table>
</div>

这是网址：

url(r'^room/overview/(?P<year>[0-9]{4})/(?P<month>[0-9]{2})/$',views.room_overview, name='room_overview'),

Answer 1

在添加键/值对之前，必须先定义上下文变量。

你可以这样做：

context = {}
context['rooms'] = rooms
context['days'] = days
context['month'] = month
context['year'] = year

或者，我个人喜欢的方式：

context = {
    'rooms': rooms, 
    'days': days,
    'month': month,
    'year': year,
}

这将解决您的错误。

姓名＆＃39; context＆＃39;未定义

1 个答案: