Django得到了一个意想不到的关键字参数'id_speaker‘

Question

我有一个模板，它显示了一个属于url的扬声器名称列表，我想点击这些urls并转到扬声器页面，我得到了一个唯一的id，它看起来是"832fc2ca-787f-484b-b815-f82959607311"，问题是我得到了错误。

get_speaker_by_id()得到了一个意外的关键字参数'id_speaker‘

我认为问题在于urls.py或speakers.html href上的乙醚。我看了每一个相关的问题，但我无法提出解决方案。

urls.py

url(r'^speakers', views.speakers_list, name='speakers'),
url(r'^speaker/(?P<id_speaker>[0-9a-z\-]+)/$',
    views.get_speaker_by_id, name='get_speaker_by_id_url')

这是显示说话者名称列表的模板。

speakers.html

{% for speaker in all_speakers_list%}

<div class="container">
  <div class="row">
    <div class="col-sm-6">
        <a href="{% url 'get_speaker_by_id_url' speaker.speaker_id %}">{{ speaker.greek_name }}</a>
    </div>
  </div>
</div>
{% endfor %}

views.py

get_speaker_by_id(request, id_speaker):
    ''' Get speaker info by id '''
    requested_speaker = Speaker.objects.get(speaker_id=id_speaker)
    template = loader.get_template('greekparliament/speaker.html')

    context = {
        'requested_speaker': requested_speaker
    }

    return HttpResponse(template.render(context, request))

models.py

class Speaker(models.Model):
    speaker_id = models.CharField(max_length=200, default='')
    english_name = models.CharField(max_length=200, default='', blank=True)
    image = models.CharField(max_length=200, default='', blank=True)
    email = models.EmailField(max_length=254, default='', blank=True)
    wiki_el = models.URLField(max_length=200, default='', blank=True)
    twitter = models.URLField(max_length=200, default='', blank=True)
    greek_name = models.CharField(max_length=200, default='')
    wiki_en = models.URLField(max_length=200, default='', blank=True)
    website = models.URLField(max_length=200, default='', blank=True)

Answer 1

当我们看到以下错误时

get_speaker_by_id() got an unexpected keyword argument 'id_speaker'

我们可以清楚地看到，它正在寻找一个名为id_speaker的参数。

从您发布的views.py文件代码中，我可以清楚地看到参数id_speaker已被传递。因此，只有一件事可以生成该错误，那就是，在您的get_speaker_by_id()文件中定义了函数、、、多次。

通过下面的代码更改函数get_speaker_by_id()的代码，该代码具有最佳实现。

from django.shortcuts import render

...

def get_speaker_by_id(request, id_speaker):
    """
    Get speaker info by id <You should always write doc>
    For example, you can follow numpy guidelines on how to 
    write docs - https://github.com/numpy/numpy/blob/master/doc/HOWTO_DOCUMENT.rst.txt     

    Parameters
    ----------
    request
        Django request that will come from http

    id_speaker: str
        Id of the speaker

    """
    # I think you should handle `DoesNotExist` error here or it will crash
    # with an Internal Server Error when id_speaker does not exists in db
    requested_speaker = Speaker.objects.get(speaker_id=id_speaker)

    context = {
        'requested_speaker': requested_speaker
    }

    return render(request, "greekparliament/speaker.html", context)