如何将动态初始值设置为django模型表单字段

我有点新django，我需要设置一个动态的初始值到我的模型表单字段。 我在我的模型名'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。 我需要在用户填写表单信息时自动将其设置为当前用户。 从我收集的这个问题中，我不得不在下面的MyHouseEditForm中定义一个init函数，我是django的新手，以及我看到的所有示例都很混乱。 真的帮助forms.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“作者”的值设置为当前用户。

models.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

views.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 })

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