我有三个模型user、usecase和usecase assign：我有两个视图重定向到同一页面，以显示用例的详细信息，并分配新用户和取消分配用户：
我正在尝试执行这个方法的逻辑：DELETE FROM usecase_assign WHERE usecase_assign . user_email = 'nmbarak';
如何从模板中获取user_email并将其传递到视图中以删除它？我尝试创建两个视图，第一个用于显示用例详细信息并分配新用户，第二个用于取消分配并重定向到同一页面。
我的usecase_assign模型：

class UsecaseAssign(models.Model):
    usecase_assign_date = models.DateTimeField(primary_key=True, auto_now_add=True)
    usecase = models.ForeignKey(Usecase, models.DO_NOTHING)
    user_email = models.ForeignKey('User', models.DO_NOTHING, db_column='user_email')
    usecase_role_id = models.CharField(max_length=20)

my views:
@user_login_required
def view_usecase_details(request, ucid):
    usecase_details = Usecase.objects.filter(usecase_id=ucid).all()
    usecase_details = usecase_details.prefetch_related("usecaseids")
    users = User.objects.all() #SELECT user_email FROM usecase_assign WHERE usecase_id LIKE 'NN245';
    usecase_assigned = UsecaseAssign.objects.select_related('user_email').values_list('user_email__user_name').filter(usecase_id=ucid) #to show list of users working on uc
    if request.method=='POST' and 'assignuser' in request.POST:
        user_email = request.POST['user_email']
        userAssignCheck = UsecaseAssign.objects.filter(user_email=user_email, usecase_id=ucid)
        if userAssignCheck:
            messages.error(request, "user already added!")
            return HttpResponseRedirect(reverse('usecase-details', args=[ucid]))
        else:
            userAssignObj = UsecaseAssign.objects.create(user_email_id=user_email, usecase_id=ucid)

        if userAssignObj:    
            messages.success(request, "User was Successfully Assigned with Usecase!")
            return HttpResponseRedirect(reverse('usecase-details', args=[ucid]))

    context = {'usecase_details': usecase_details, "users": User.objects.all(), 'usecase_assigned':usecase_assigned, "users": users}
    return render(request, 'UsecaseDetails.html', context)        

@user_login_required
def unassign_emp(request, eid):
    if request.method == 'POST':
        unassign_emp = UsecaseAssign.objects.filter(user_email_id=eid).delete()
        return redirect('usecase-details')

我的模板：

{% for result in usecase_details %}
<div class="card card-body shadow-sm mb-4 mb-lg-0">
    <form class="mb-card" action="/usecase-details/{{result.usecase_id}}" method="POST">
        {% csrf_token %}
        <div class="form-row mb-4">
          <div class="col-lg-8 mr-f">
            <label class="h5" for="user_email">Assign new users:</label>
            <select name="user_email" class="custom-select my-1 mr-sm-2" id="user">
                <option value="0" selected>Select</option>
                {% for user in users %}
                <option value="{{ user.user_email }}">{{ user.user_name }}</option>
                {% endfor %}                             
              </select>    
            </div>
        </div>
        <input type="submit" class="btn btn-primary" name="assignuser" value="Submit Changes">
      </form>
      <ul class="list-group list-group-flush">
        <li class="list-group-item d-flex align-items-center justify-content-between px-0 border-bottom">
            <div>
                <label class="mb-card h5" for="user_email">Assigned users:</label>
                {% for user in usecase_assigned %}
                <form action="/unassign-emp/{{result.user_email}}" method="POST" style="display: inline !important;">
                {% csrf_token %}
            <div class="btn-group me-2 mb-2">
                <button type="button" class="btn btn-outline-danger">{{user|join:', '}}</button>
                <button type="submit" class="btn btn-danger" >
                    <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-file-x-fill" viewBox="0 0 16 16">
                        <path d="M12 0H4a2 2 0 0 0-2 2v12a2 2 0 0 0 2 2h8a2 2 0 0 0 2-2V2a2 2 0 0 0-2-2zM6.854 6.146 8 7.293l1.146-1.147a.5.5 0 1 1 .708.708L8.707 8l1.147 1.146a.5.5 0 0 1-.708.708L8 8.707 6.854 9.854a.5.5 0 0 1-.708-.708L7.293 8 6.146 6.854a.5.5 0 1 1 .708-.708z"></path>
                      </svg>                   
                </button>
              </form>
            </div>
            {% endfor %}  
            </form>
            </div>          
        </li>
    </ul>
</div>
{% endfor %}

网址：

path('usecase-details/<str:ucid>', av.view_usecase_details, name="usecase-details"),
    path('unassign-emp/<str:eid>', av.unassign_emp),

我一直在这几天，我试图把一切都在一个视图仍然有问题的网址，我接受另一种方式来处理这一点。