如何在不提供所有字段值的情况下保存 django model 的 object ？

Question

model 触点

class Contact(models.Model):
    owner = models.ForeignKey(User,related_name="contacts",on_delete=models.CASCADE)
    first_name = models.CharField(max_length=100)
    last_name = models.CharField(max_length=100)
    account_name = models.CharField(max_length=100)
    title = models.CharField(max_length=200,null=True,blank=True)
    email = models.EmailField(null=True,blank=True)
    phone = models.BigIntegerField(null=True,blank=True)
    mobile = models.BigIntegerField(null=True,blank=True)
    assistant = models.CharField(max_length=100,null=True,blank=True)
    assistant_phone = models.BigIntegerField(null=True,blank=True)
    Department = models.CharField(max_length=100,null=True,blank=True)
    fax = models.CharField(max_length=100,null=True,blank=True)
    date_of_birth = models.DateField(null=True,blank=True)
    skype_id = models.CharField(max_length=100,null=True,blank=True)
    twitter = models.CharField(max_length=100,null=True,blank=True)
    country = models.CharField(max_length=100,null=True,blank=True)
    state = models.CharField(max_length=100,null=True,blank=True)
    city = models.CharField(max_length=100,null=True,blank=True)
    street = models.CharField(max_length=100,null=True,blank=True)
    pin_code = models.IntegerField(null=True,blank=True)
    description = models.TextField(null=True,blank=True)
    added_on = models.DateTimeField(auto_now_add=True)

正如您所见，某些字段有blank=True意味着我们在创建新的 object 期间不需要为该字段提供值

views.py 用于保存联系人 model 的新对象。

def save_contact(request):
    if request.method == "POST":
        first_name = request.POST.get("fname")
        last_name = request.POST.get("lname")
        contact_name = request.POST.get("contact_name")
        title = request.POST.get("title")
        email = request.POST.get("email")
        phone = request.POST.get("phone")
        mobile = request.POST.get("mobile")
        assistant = request.POST.get("assistant")
        assistant_phone = request.POST.get("assistant_phone")
        department = request.POST.get("department")
        fax = request.POST.get("fax")
        date_of_birth = request.POST.get("date_of_birth")
        skype_id = request.POST.get("skype_id")
        twitter = request.POST.get("twitter_id")
        country = check(request.POST.get("country")
        state = request.POST.get("state")
        city = request.POST.get("city")
        street = request.POST.get("street")
        pin_code = request.POST.get("pin_code")
        description = request.POST.get("description")
        contact_obj = Contact(owner=request.user,first_name=first_name,last_name=last_name,account_name=contact_name,title=title,email=email,phone=phone,mobile=mobile,assistant=assistant,assistant_phone=assistant_phone,Department=department,fax=fax,date_of_birth=date_of_birth,skype_id=skype_id,twitter=twitter,country=country,state=state,city=city,street=street,pin_code=pin_code,description=description)
        try:
            Contact.save(self=contact_obj)
        except:
            messages.success(request,"Something went wrong! Try again")
            return redirect("crm_contacts")
        messages.success(request,"Your contact has been successfully saved")
        return redirect("crm_contacts")
    else:
        messages.success(request,"Something went wrong! Try again")
        return redirect("crm_contacts")

现在的问题是我需要在新联系人 object 中给出所有字段值。 假设如果用户没有给出电话字段的任何值，那么我可以将其存储在数据库中。我在保存 object 期间出现错误。 有什么方法可以让我只提供那些联系 object 的字段，其值由用户提供，因此联系 object 可以存储在数据库中。

Error = ValueError: invalid literal for int() with base 10: ''

Answer 1

我认为您应该查看 Django 中的 model forms。 这样它会更 干净，并且验证是内置的

使用 forms，您可以创建一个表格 object 并稍后保存

new_author = f.save(commit=False)
new_author.property = value
new_author.save()