【发布时间】:2020-10-27 11:26:01
【问题描述】:
联系方式
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)
有些字段可以有blank=True,这意味着我们在创建新对象时不需要为该字段赋值
views.py 用于保存联系人模型的新对象。
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的联系人对象中提供所有字段值。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,但在保存对象期间出现错误。有什么方法可以只将这些字段提供给联系人对象,其值由用户指定,以便联系人对象可以存储在数据库中。
错误 = ValueError: invalid literal for int() with base 10: ''
【问题讨论】:
-
当您使用 pin_code = request.POST.get("pin_code") 时,它将有一个空字符串而不是 None,因为用户发布了一个空值。当您尝试保存模型时,所有 int 字段都会出错。在您的情况下,您需要手动检查给定值是否为空字符串,那么它应该为无。但是你最好
ModelForm它会为你做所有检查 -
@AndreyMaslov 谢谢我检查 if-else 并没有给空字符串和工作,但是当我看到 HTML 格式的新联系人对象时,它在 HTML 中没有显示。我认为模型形式最好我会使用它。
-
您可以在创建模型对象时添加检查
Contact(..., pin_code = pin_code if pin_code else None, ...)但ModelForm会是更好的决定
标签: python django django-models django-views