如何设置模型属性的默认值？

Question

I created a model and then model-form to take input from user. I am trying to set the default value of the author to the active user's name, but instead, the default value is set to the username of admin. Please take a look at the code.

models.py

from django.db import models
from django.contrib.auth.models import User
from datetime import datetime

class tweets(models.Model):
    def curr_user():
        for user in User.objects.all():
            if user.is_active:
                return user.get_username
    z = curr_user()
    k = datetime.now
    author = models.CharField(max_length = 50,default=z)
    date_time = models.DateTimeField(default = k)
    body = models.TextField()

    def __str__(self):
        return self.body

forms.py

from django import forms
from .models import tweets

class TweetsForm(forms.ModelForm):

    class Meta():
            model = tweets
        fields = "__all__"

Answer 1

检查哪个用户已登录（我猜是管理员）以方便地检查它到“ localhost：8000 / admin”（仅在本地运行），然后注销并使用用户“ autor”登录