error-handling - pk = request我有一些错误。由于出现此错误，我似乎无法将我的储备金链接到另一页

Question

def reserve(request):
if request.method=="POST":
    user=User.objects.get(pk=request.POST['user'])
    **book = Book.objects.get(pk=request.POST['book'])**
    book.isAvailable=True
    book.save()
    reservation=Reserve(dateLoaned=datetime.now(),book=book, user=user)
    reservation.save()
    reservations=Reserve.objects.all()
    return redirect('/library/reservations/')
else:
    user=User.objects.all()
    book=Book.objects.all()
    return render(request, 'reserve.html',{"users":user, "book":book})

我的书有一些错误= Book.objects.get(pk = request.post [book'])
我正在做一个需要在星期一提交的项目。请帮助!

reserve.html

{% extends 'base.html' %}
{% load static %}
{%  block title %}
Reserve
{% endblock %} 
{% block maincontent %}
    <form action="../reserve/" method="post">
       {% csrf_token %}
    <br>
      <div class="table">
          <input value="{{ book.title }}" class="form-control"
               id="exampleFormControlInput1" enabled>
    </div>
    <div class="form-group">
        <td>
            <img src = "{{ book.cover }}" height="150" width="100"/>
        </td>
    </div>
    <div class="form-group">
    <br>
        <label for="FormControlSelect1">Select Users</label>
        <select class="form-control" id="FormControlSelect1" required
                    name="user">
            {%  for user in users %}
            <option value="{{ user.pk }}">{{ user }}</option>
            {% endfor %}
        </select>
    </div>
    <div class="form-group">
        <button type="submit" class="btn btn-success btn-block">Reserve</button><br>
    </div>
    <input type="hidden" value="{{ book.pk }}" name="book" />
</form>
{% endblock %}

我的储备HTML可能有一些错误。它应该将我的储备金链接到另一页。但是没有。

Answer 1

上图MultiValueDictKeyError中的错误。您必须替换以下代码

reservation = Reserve.objects.get(pk=request.POST['reservation'])

至

reservation = Reserve.objects.get(pk=request.POST.get('reservation'))