如何在django中过滤不同的用户 [英] How can I filter distinct users in django

问题描述

我正在尝试构建一个消息传递应用。这是我的模型，



类消息（models.Model）：

sender = models.ForeignKey（User，related_name =sender）

receiver = models.ForeignKey（User，related_name =receiver）

msg_content = models.TextField（）

created_at = models.DateTimeField （auto_now_add = True）



这是我试过的，



data = Message.objects .filter（Q（sender = request.user）| Q（receiver = request.user））



在模板中，



{％abc in data％}

{{abc.receiver}}


{％endfor％}



在这里，我想过滤掉不同的接收器并根据request.user最近向谁发送新消息的事实重新排序（正如我们在社交媒体平台上看到的那样） 。我怎么能这样做？



从1个月开始我被这个代码绞死了，我会非常感谢每一个小小的帮助:)



我尝试过：



data = Message.objects.filter（Q（sender = request.user）| Q（receiver = request.user））。values（'receiver'）。distinct（）。order_by（）



我也试过，< br $>


data = Message.objects.filter（Q（sender = request.user）| Q（receiver = request.user））

receiver_list =

data.filter（sender = request.user）.order_by（'created_at'）。distinct（'receiver'）

I'm trying to build a messaging app. Here's my model,

class Message(models.Model):
sender = models.ForeignKey(User, related_name="sender")
receiver = models.ForeignKey(User, related_name="receiver")
msg_content = models.TextField()
created_at = models.DateTimeField(auto_now_add=True)

This is what I tried in view,

data = Message.objects.filter(Q(sender=request.user) | Q(receiver=request.user))

In the template,

{% for abc in data %}
{{ abc.receiver }}

{% endfor %}

Here i wants to filter the distinct receivers and re-order them based upon the fact that to whom `request.user` sent new message recently (as we see on social media platforms). How can I do that?

I'm hanged with this code from 1 month, I will be very thankful with every little help :)

What I have tried:

data = Message.objects.filter(Q(sender=request.user) | Q(receiver=request.user)).values('receiver').distinct().order_by()

Also I tried,

data = Message.objects.filter(Q(sender=request.user) | Q(receiver=request.user))
receiver_list =
data.filter(sender=request.user).order_by('created_at').distinct('receiver')

推荐答案

在模板中，使用 if 条件检查您的接收者和发件人是否有特定消息。

类似

In the template, use an if condition that checks your receiver and sender for a particular message.
Something like

{% if abc.receiver == request.user %}
# this means that the current user is the receiver
{% endif %}

同样你应该能够做到这一点abc.sender。



您需要在上下文中（在您的视图中）传递当前登录的用户。

Similarly you should be able to do it for abc.sender.

You'll need to pass current logged in user in the context(in your view).

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