我一直在试图把一个解决方案,这用尽了所有的途径,但我目前Python和Django的知识只能让我至今。Null值违反非空约束在Django 1.9
我创建一个基本的票务系统和CreateView的用于工作,直到我创建了一个剖面模型,然后分离票务模型到它自己的应用程序。当我重构我的代码时,已经创建了一些票据,这就是为什么我知道ListView的工作原理,DeleteView的工作原理以及DetailView的原理。 CreateView的作品,直到我点击保存按钮。
我的视图和模型都低于;我希望有人能帮我解决这个问题。
票务型号
from django.db import models
from django.contrib.auth.models import User
....
from qcapp.models import Profile
class Ticket(models.Model):
# Relations
user = models.ForeignKey(Profile, on_delete=models.CASCADE, related_name="tickets", verbose_name="user")
# Attributes
title = models.CharField(max_length=250, verbose_name="Title", help_text="Enter a Ticket Title")
color = models.CharField(max_length=7,
default="#ffffff",
validators=[RegexValidator("(^#[0-9a-fA-F]{3}$)|(^#[0-9a-fA-F]{6}$)")],
verbose_name="Color",
help_text="Enter the hex color code, like #ccc or #cccccc")
description = models.TextField(max_length=1000)
created_date = models.DateTimeField(default=timezone.now, verbose_name='Created Date')
created_by = models.ForeignKey(User, related_name='created_by_user')
# Attributes
# Object Manager
objects = managers.ProjectManager()
# Meta and String
class Meta:
verbose_name = "Ticket"
verbose_name_plural = "Tickets"
ordering = ("user", "title")
unique_together = ("user", "title")
def __str__(self):
return "%s - %s" % (self.user, self.title)
def get_absolute_url(self):
return reverse('ticket_detail', args=[str(self.id)])
票务视图(CreateView的只)
# -*- coding: utf-8 -*-
...
from django.views.generic import CreateView, UpdateView, DeleteView
...
from .models import Ticket
...
class TicketCreate(CreateView):
model = Ticket
template_name = "tickets/ticket_form.html"
fields = ['title', 'description']
def form_valid(self, form):
form.instance.created_by = self.request.user
return super(TicketCreate, self).form_valid(form)
...
剖面模型(导入票务模型)
from django.db import models
from django.conf import settings
from django.contrib.auth.models import User
from django.dispatch import receiver
from django.db.models.signals import post_save
from . import managers
class Profile(models.Model):
# Relations
user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="profile", verbose_name="user")
# Attributes
interaction = models.PositiveIntegerField(default=0, verbose_name="interaction")
# Attributes
# Object Manager
objects = managers.ProfileManager()
# Custom Properties
@property
def username(self):
return self.user.username
# Methods
# Meta and String
class Meta:
verbose_name = "Profile"
verbose_name_plural = "Profiles"
ordering = ("user",)
def __str__(self):
return self.user.username
@receiver(post_save, sender=settings.AUTH_USER_MODEL)
def create_profile_for_new_user(sender, created, instance, **kwargs):
if created:
profile = Profile(user=instance)
profile.save()
你有什么问题保存? 'Ticket'或'Profile'或两者?我会假设'Ticket'。如果是这样的话,你正在分配'created_by'字段,但是你没有分配'user'。 – themanatuf
个人资料运行良好...只需将它添加到此票中即可,因为它与解决方案相关。你能否提供一个分配用户到票证的例子?谢谢。 –
井'form_valid()'的'你你TicketCreate'已经这样做:'form.instance.created_by = self.request.user'所以我想你需要做的是:'form.instance.user =自我。 request.user' – themanatuf