Question

我创建了一个预订系统，用户可以进行多次预订。我正在尝试为用户创建一种编辑这些预订的方法，并创建了以下机制。

用户预订 - ＆gt;在数据库中创建的对象 - ＆gt;用户可以看到即将发布的模板中列出的即将到来的预订 - ＆gt;用户可以更改预订。

我遇到问题的地方是我尝试访问编辑视图的时候。基本上，当单击编辑按钮时，无论预订如何，它都将始终将用户带到数据库中第一个对象的预订表单，而不是相关的对象。

见下面的代码：

models.py

class Booking(models.Model):
    user = models.ForeignKey(User, on_delete=models.CASCADE, null=True)
    unique_id = models.UUIDField(unique=True, default=uuid.uuid4, editable=False)
    coursename = models.CharField(max_length=200)
    daterequired = models.DateTimeField(default=datetime.now(timezone.utc))
    students = models.CharField(max_length=200)
    length = models.IntegerField()
    matches = models.ManyToManyField(Student, related_name='matches')
    slug = models.SlugField(max_length=40, blank=True)

    def save(self, *args, **kwargs):
        if not self.pk:
            self.slug = slugify(self.name)
        super(Booking, self).save(*args, **kwargs)


    def __str__(self):
        return str(self.user.username)

views.py

def upcoming(request):
    booking = Booking.objects.filter(user=request.user)
    for bookings in booking:
        return render(request, 'classroom/teachers/upcoming.html', {'booking':booking})
    return redirect('teachers:book')

def addstudents(request, unique_id):
    booking = Booking.objects.get(unique_id=unique_id)
    if (request.method == 'POST'):
        form = BookingForm(data=request.POST, instance=booking)
        if form.is_valid():
            form.save(commit=True)
        return redirect('teachers:upcoming')
    else:
        booking_dict = model_to_dict(booking)
        form = BookingForm(booking_dict)
        return render(request, 'classroom/teachers/adding.html', {'form':form})

urls.py

 path('teachers/', include(([
        path('', teachers.QuizListView.as_view(), name='quiz_change_list'),
        path('choose/', teachers.choose, name='choose'),
        path('book/', teachers.book, name='book'),
        path('addstudents/<uuid:unique_id>', teachers.addstudents, name='studentadd'),
        path('upcoming/', teachers.upcoming, name='upcoming'),
    ], 'classroom'), namespace='teachers')),

upcoming.html

{% extends 'base.html' %}
{% block content %}
<div class="container">
  <div class="card">
    <div class="card-header">
      Upcoming Bookings
      <a href="{% url 'teachers:book' %}" style="float:right !important;" class="btn btn-primary btn-sm">Book More</a>
    </div>
    {% for bookings in booking %}
    <div style="border-bottom: 1px solid rgba(0,0,0,.125);" class="card-body">
      <h5 class="card-title">{{ bookings.coursename }}</h5>
      <p class="card-title"><strong>Unique Course ID:</strong> {{ bookings.unique_id }}</p>
      <span class="badge badge-primary badge-pill">{{ bookings.daterequired }}</span>
      <span class="badge badge-primary badge-pill">{{ bookings.students }} Students.</span>
      <span class="badge badge-primary badge-pill">{{ bookings.length }} Hours.</span>
      <button style="float: right !important;" type="button" class="btn btn-danger" data-toggle="modal" data-target=".bd-example-modal-lg">Student List</button>
    </div>

    <div class="modal fade bd-example-modal-lg" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="true">
      <div class="modal-dialog modal-dialog-centered" role="document">
        <div class="modal-content">
          <div class="modal-header">
            <h5 class="modal-title" id="exampleModalLongTitle">Student List</h5>
            <button type="button" class="close" data-dismiss="modal" aria-label="Close">
              <span aria-hidden="true">&times;</span>
            </button>
          </div>
          <div class="modal-body">
            <table class="table table-striped">
  <thead>
    <tr>
      <th scope="col">Username</th>
    </tr>
  </thead>
  <tbody>
  {% for matches in bookings.matches.all %}
    <tr>
      <td>{{ matches }}</td>
    </tr>
  {% endfor %}
  </tbody>
</table>
          </div>
          <div class="modal-footer">
            <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
            <a href="{% url 'teachers:studentadd' bookings.unique_id%}"><button type="button" class="btn btn-primary">Add More Students</button></a>
          </div>
        </div>
      </div>
    </div>

      {% endfor %}
  </div>
</div>
{% endblock %}

forms.py

class BookingForm(forms.ModelForm):
    class Meta:
        model = Booking
        exclude = ['user', ]
        widgets = {
            'students': forms.TextInput(attrs={'placeholder': 'Number of Students'}),
            'length': forms.TextInput(
                attrs={'placeholder': 'Time needed in hours'}),
            'coursename': forms.TextInput(
                attrs={'placeholder': 'Name of your course for students'}),
        }
        labels = {
            'daterequired': 'What date and time do you require?',
            'coursename': 'Name of Upcoming Course'
        }

链接结构： Linking structure

AddStudents表单： firn

仅供参考 - 添加学生是预订表格编辑页面。

任何人都可以告诉我为什么我只能编辑数据库中的第一个对象？

只能在Django中编辑数据库中的一个对象 - 为什么？

0 个答案: