django 模板：在字典和元素中渲染字典

Question

使用视图我生成了以下字典结构：

{'badge-bronze': {'badge_recipients': [<User: aa>, <User: ni>], 'badge': 'badge-bronze', 'page_class': 'meta'}, 'badge-silver': {'badge_recipients': [<User: ni>], 'badge': 'badge-silver', 'page_class': 'meta'}, 'badge-gold': {'badge_recipients': [<User: ni>], 'badge': 'badge-gold', 'page_class': 'meta'}}

这是我生成字典的方式（仅包括我构建字典的部分）

def contest(request):
    all_badges = badge_data.BADGES.keys()
    data = {}
    for badge in all_badges:
        if badge == 'badge-bronze' or badge == 'badge-silver' or badge == 'badge-gold':
            badge_data_info = get_object_or_404(BadgeData, slug=badge)
            badge_recipients = User.objects.filter(
                                award_user__badge = badge_data_info
                            ).annotate(
                                last_awarded_at = Max('award_user__awarded_at'),
                                award_count = Count('award_user')
                            ).order_by(
                                '-last_awarded_at'
                            )                         
            data[badge] = {
                'badge_recipients' : badge_recipients,
                'badge' : badge_data_info,
                'page_class': 'meta',
            }
    #import pdb
    #pdb.set_trace()      
    return render(request, 'contest.html', {'data':data})

在我的模板中，我尝试将其呈现如下：

<div id="award-list">
    {% for key,value in data.items %}
        <li>key</li>
        {% for recipient in value.badge_recipients %}
            <div class="user">
                    <span class="thumb">{{ gravatar(recipient, 32) }}</span>
                    <span><a href="{{ recipient.get_absolute_url() }}">{{recipient.username|escape}}</a></span>
                    <span>{{ macros.user_score_and_badge_summary(user) }}</span>
            </div>
        {% endfor %}
    {% endfor %}
</div>   

但我收到错误消息，说数据未定义，也没有渲染。根据提供的答案，我进行了更改，现在我的错误如下：'builtin_function_or_method' object is not iterable

Answer 1

那是因为您没有向模板提供任何名为 data 的变量。

改变

return render(request, 'contest.html', data)

通过

return render(request, 'contest.html', {'data': data})

Answer 2

您应该在模板中使用密钥“badge_recipients”：

<div id="award-list">
    {% for key,value in data.items %}
        <li>key</li>
        {% for recipient in value.badge_recipients %}
            <div class="user">
                    <span class="thumb">{{ gravatar(recipient, 32) }}</span>
                    <span><a href="{{ recipient.get_absolute_url() }}">{{recipient.username|escape}}</a></span>
                    <span>{{ macros.user_score_and_badge_summary(user) }}</span>
            </div>
        {% endfor %}
    {% endfor %}
</div

Answer 3

在上述答案的帮助下，我设法找出了这个问题的解决方案：

第一个修复是：

return render(request, 'contest.html', data) 到 return render(request, 'contest.html', {'data': data})

然后，当您遍历字典时，您必须执行 dictionary.items() 这是上述答案中唯一缺少的事情。

<div id="award-list">
    {% for key,value in draw.items() %}
        {% for recipient in value.badge_recipients %}
            <div class="user">
                    <span class="thumb">{{ gravatar(recipient, 32) }}</span>
                    <span><a href="{{ recipient.get_absolute_url() }}">{{recipient.username|escape}}</a></span>
                    <span>{{ macros.user_score_and_badge_summary(user) }}</span>
            </div>
        {% endfor %}
    {% endfor %}
</div>