将选定的用户分配给对象Django

时间:2019-04-05 06:03:13

标签: python django

以下代码将登录用户分配给对象,如何更改它以将下拉菜单中的选定用户分配给对象?

<form method='POST' action="{% url 'post:car' post.id %}">
    {% csrf_token %}
    <label for="select1"></label>
    <select class="mdb-select md-form" id="select1" onChange="form.submit();">
        <option value="" disabled selected>Assign</option>
        {% for user in current_users %}
            <option value="{{ user.id }}"> {{ user }} </option>
        {% endfor %}
    </select>

</form>

上面的目标是将选定的{{user.id}}分配给{{post.id}}

urls.py

path('post/<int:tag>', views.assigned_post, name='car'),

current_users 是通过使用context['current_users'] = ProjectUser.objects.all()

views.py 注入实现的。

views.py

def assigned_post(request, tag):
    as_curr = get_object_or_404(Post, id=tag)

    if request.method == 'POST':
        if as_curr.assigned_to:
            as_curr.assigned_to = None
            as_curr.save()

        else:
            as_curr.assigned_to = request.user # < -- Assign to drop down user instead of current user
            as_curr.save()

    return HttpResponseRedirect(reverse('post:tasks'))

models.py

class Post(models.Model):
      assigned_to = models.ForeignKey(ProjectUser, related_name="assigned_user", blank=True, null=True,
                                    on_delete=models.CASCADE)

我尝试过的事情:

as_curr.assigned_to = request.POST.get('user_id')

但是视图在None上返回了request.POST.get('user_id')

2 个答案:

答案 0 :(得分:2)

因为您的模型将assigned_to指定为ProjectUser的外键,这意味着您必须使用ProjectUser实例填充它,因此会出现错误。因此,也许在保存之前尝试获取ProjectUser:

# views.py 

user = ProjectUser.objects.get(id=request.POST.get('user_id'))
as_curr.assigned_to = user
as_curr.save()

答案 1 :(得分:0)

您需要给输入表单元素正确的名称,以便从request.POST中获取它(例如,name =“ user_id”)

<select name="user_id" class="mdb-select md-form" id="select1" onChange="form.submit();">