为什么我得到QuerySet对象没有用户属性

Question

我正在使用Django开发一个网站，在那里用户可以发送朋友信息 请求另一个用户，我的代码出现了一个错误。Queryset对象没有用户属性。根据我所附的图片，当我点击第一个用户的follow按钮时，所有按钮都会将文本更改为“cancel”，但当我点击第二个用户的按钮时，不会更改文本。我想当按钮点击按钮文本应该能够为每个用户改变

def home(request):
    p = Profile.objects.exclude(user=request.user)
    u = p.user
    sent_request = FriendRequest.objects.filter(from_user=p.user)
    button_status = 'none'
    if p not in request.user.profile.friends.all()
        button_status = 'not_friend'
        if len(FriendRequest.objects.filter(from_uset=request.user).filter(to_user=p.user)) == 1:
            button_status='add_request'
        if len(FriendRequest.objects.filter(from_user=p.user).filter(to_user=request.user)) == 1:
            button_status='cancel_request'

context = {'u':u, 'p':p, 'sent_request',:sent_request, 'button_status':button_status,} 

return render(request, 'home.html', context) 


{% for profile in p %} 
{{ profile }} 
{% if not request.user in u %} 
{% if button_status == 'not_friend' %} 
href = add url here 
{% elif button_staus == 'cancel_request' %} 
href = cancel request url here
{%  endif %} 
{% endif %}
{% endfor %} 


#This only execute once on template, instead of twice (duplicate). How do I make this display twice in template? 
{% for data in profile_and_button_status %}
{%  data.0.user.username %}
#All codes here
{% endfor %}

{% if forloop.counter == 1 %} 
{% for data in profile_and_button_status %}
#All codes here
{%  data.0.user.username %}
{% endfor %}
{% endif %} 

Answer 1

因为.exclude()会给你一个查询集。因此，您必须首先迭代该queryset并从中获取所需的用户

因为queryset它意味着list

我认为您必须传递特定用户的zip配置文件列表p和按钮状态列表button_status，如下所示

def home(request):
    p = Profile.objects.exclude(user=request.user)
    all_profile_users = []
    button_status_list = []                

    for user_obj in p:

        u = user_obj.user
        all_profile_users.append(u)
        sent_request = FriendRequest.objects.filter(from_user=u)

        friends = Profile.objects.filter(user=request.user, friends__id=user_obj.id).exist()


        button_status = 'none'
        if not friends
            button_status = 'not_friend'
            if len(FriendRequest.objects.filter(from_uset=request.user).filter(to_user=p.user)) == 1:
                button_status='add_request'
            if len(FriendRequest.objects.filter(from_user=p.user).filter(to_user=request.user)) == 1:
                button_status='accept_request'

        button_status_list.append(button_status)

    context = {'u':all_profile_users, 'profile_and_button_status': zip(p, button_status_list), 'sent_request':sent_request}

然后，在模板中迭代profile_and_button_status，如下所示

{% for data in profile_and_button_status %}

    <div class="row mb-2">
        ... YOUR DESIGN CODE ...
        {{ data.0.user.username }}

   {% if not request.user in u %} 

       {% if data.1 == 'not_friend' %}
            ... YOUR DESIGN CODE ...

       {% elif data.1 == 'follow_request_sent' %}  
            ... YOUR DESIGN CODE ...

其他条件也是如此

删除好友：

def remove_friend(request, id):
    ... YOUR LOGIC ...
    frequest = FriendRequest.objects.filter(from_user=from_user, to_user=request.user).first()
    if frequest is None:
        frequest = FriendRequest.objects.filter(from_user=request.user, to_user=from_user).first()
    user1 = frequest.to_user
    user2 = from_user
    ... YOUR LOGIC ...