python - 如何为django modelform字段设置动态初始值

Question

我是 django 的新手，我需要为我的 modelform 字段设置一个动态初始值。我的模型名称“author”中有一个数据库字段，它有一个将它连接到 django 用户模型的外键。每当用户在表单中填写信息时，我都需要自动将其设置为当前用户。根据我收集到的关于这个问题的信息，我必须在下面的 MyHouseEditForm 中定义一个 __init__ 函数，我是 django 的新手，我看到的所有示例都非常困惑。

表单.py

from django import forms
from django.contrib.auth.models import User
from .models import Myhouses

class MyHouseEditForm(forms.ModelForm):    
    class Meta:        
        model = Myhouses        
        fields = ('author','name_of_accomodation', 'type_of_room', 'house_rent', 'availability', 'location', 'nearest_institution', 'description', 'image') 

我需要在用户登录时将“author”的值设置为当前用户。

模型.py

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



class Myhouses(models.Model):
    author = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, blank=True, related_name='author')
        Available = 'A'
        Not_Available = 'NA'
        Availability = (
            (Available, 'Available'),
            (Not_Available, 'Not_Available'),
        )
    name_of_accomodation = models.CharField(max_length=200)
    type_of_room = models.CharField(max_length=200)
    house_rent = models.IntegerField(null=True)
    availability = models.CharField(max_length=2, choices=Availability, default=Available,)
    location = models.CharField(max_length=200)
    nearest_institution = models.CharField(max_length=200)
    description = models.TextField(blank=True)
    image = models.ImageField(upload_to='profile_image')


    def __str__(self):
        return self.name_of_accomodation

View .py

@login_required
def addlisting(request):    
    if request.method == 'POST': 
        form = MyHouseEditForm(request.POST, files=request.FILES)
        if form.is_valid():    
            Houses = form.save(commit=False)
            Houses.save()
            return redirect('addlisting')           
    else:        
        form = MyHouseEditForm()  

    return render(request, 'houses/addlisting.html', {'form':form })

Answer 1

无需在表单中显示作者字段。它会自动填充登录用户。

request.user 为您提供登录用户对象。因此，您可以从表单字段部分删除提交的“作者”并执行此操作:

Houses = form.save(commit=False)
Houses.author = request.user
Houses.save()