Question

我的所有CreateView都运行正常，但这不是（虽然这是UpdateView）。检查后，试图找出差异，我找不到。必须是我仍然缺少的东西。

模板：

<form method="POST">{% csrf_token %}
        {{ form.non_field_errors }}
        {{ form.errors }}
        {{ form.make }}
        {{ form.make.errors }}
        {{ form.model}}
        {{ form.model.errors }}
        {{ form.year}}
        {{ form.year.errors }}

            <button type="submit"> Save</button>
            <a href="javascript:close_window();"> Close</a>
    </form>

URLS.py中的Url paterns：

url(r'^update/(?P<pk>\w+)/$',UpdateView.as_view(
    model=Vehicles,
    form_class=VehiclesForm,
    success_url="/main/",
    template_name="vehicle_detail.html")),

型号：

from django.db import models


class Vehicles(models.Model):
    stock = models.CharField(max_length=10, blank=False, db_index=True)
    vin = models.CharField(max_length=17, blank=False, db_index=True)
    vinlast8 = models.CharField(max_length=8, blank=False, db_index=True)
    make = models.CharField(max_length=15, blank=False)
    model = models.CharField(max_length=15, blank=False)
    year = models.CharField(max_length=4, blank=False)
    deal = models.IntegerField(blank=False, db_index=True, null=True)
    sold = models.DateField(blank=True, null=True, db_index=True)
    origin = models.ForeignKey('origins.Origins', db_column='origin')
    #origin = models.CharField(max_length=10, blank=True)
    bank = models.ForeignKey('banks.Banks', db_column='bank', null=True)
    vehtype = models.ForeignKey('vehtypes.Vehtypes', db_column='vehtype', verbose_name='Veh Type')
    status = models.ForeignKey('status.Status', db_column='status')
    imported = models.DateField()
    clerk = models.CharField(max_length=10, blank=False, db_index=True, verbose_name='Clerk')
    completed = models.DateField(blank=True, null=True)
    registry = models.IntegerField(blank=True, verbose_name='Reg #', null=True)
    plate = models.CharField(blank=True, null=True, max_length=10)
    tagno = models.IntegerField(blank=True, null=True, verbose_name='Tag #')
    tag_exp = models.DateField(blank=True, null=True, verbose_name='Tag Exp')
    unit_linked = models.IntegerField(blank=False, verbose_name='Link')
    salesperson = models.CharField(max_length=20, blank=False, verbose_name='S/person', null=True)
    agent = models.ForeignKey('agents.Agents', db_column='agent', blank=True, null=True)
    tradein1 = models.CharField(max_length=10, blank=True, null=True, verbose_name='stock')
    tr1vin = models.CharField(max_length=17, blank=True, db_index=True, null=True, verbose_name='vin')
    tr1make = models.CharField(max_length=15, blank=True, null=True, verbose_name='make')
    tr1model = models.CharField(max_length=15, blank=True, null=True, verbose_name='model')
    tr1year = models.CharField(max_length=4, blank=True, null=True, verbose_name='year')
    tradein2 = models.CharField(max_length=10, blank=True, null=True, verbose_name='stock')
    tr2vin = models.CharField(max_length=17, blank=True, db_index=True, null=True,verbose_name='vin')
    tr2make = models.CharField(max_length=15, blank=True, null=True,verbose_name='make')
    tr2model = models.CharField(max_length=15, blank=True, null=True,verbose_name='model')
    tr2year = models.CharField(max_length=4, blank=True, null=True,verbose_name='year')
    lhtrade1 = models.CharField(max_length=15, blank=True, null=True, verbose_name='L/holder')
    lh1docreq = models.DateField(blank=True, null=True, verbose_name='D/Requested')
    lh1docrec = models.DateField(blank=True, null=True, verbose_name='D/Received')
    lhtrade2 = models.CharField(max_length=15, blank=True, null=True, verbose_name='L/holder')
    lh2docreq = models.DateField(blank=True, null=True, verbose_name='D/Requested')
    lh2docrec = models.DateField(blank=True, null=True, verbose_name='D/Received')

    cust1name = models.CharField(max_length=40, blank=True, db_index=True, null=True,
                                     verbose_name='name')
    cust1lic = models.CharField(max_length=20, blank=True, db_index=True, null=True,
                                verbose_name='license')
    cust1addr = models.CharField(max_length=40, blank=True, null=True, verbose_name='address')
    cust1city = models.CharField(max_length=15, blank=True, null=True, verbose_name='city')
    cust1state = models.CharField(max_length=2, blank=True, null=True, verbose_name='state')
    cust1zip = models.CharField(max_length=10, blank=True, null=True, verbose_name='zipcode')
    cust1email = models.EmailField(blank=True, null=True, verbose_name='email')
    cust1tel1 = models.CharField(max_length=15, blank=True, verbose_name='Tel. 1', null=True)
    cust1tel2 = models.CharField(max_length=15, blank=True, verbose_name='Tel. 2', null=True)
    cust1ssn = models.CharField(max_length=12, blank=True, db_index=True, null=True,verbose_name='SSN')

    cust2name = models.CharField(max_length=30, blank=True, db_index=True, null=True,
                                     verbose_name='name')
    cust2lic = models.CharField(max_length=20, blank=True, db_index=True, null=True,
                                verbose_name='license')
    cust2addr = models.CharField(max_length=25, blank=True, null=True, verbose_name='address')
    cust2city = models.CharField(max_length=15, blank=True, null=True, verbose_name='city')
    cust2state = models.CharField(max_length=2, blank=True, null=True, verbose_name='state')
    cust2zip = models.CharField(max_length=10, blank=True, null=True, verbose_name='zipcode')
    cust2email = models.EmailField(blank=True, null=True, verbose_name='email')
    cust2tel1 = models.CharField(max_length=15, blank=True, verbose_name='Tel. 1', null=True)
    cust2tel2 = models.CharField(max_length=15, blank=True, verbose_name='Tel. 2', null=True)
    cust2ssn = models.CharField(max_length=12, blank=True, db_index=True, null=True,verbose_name='SSN')

    class Meta:
        db_table = 'vehicles'

    def __unicode__(self):
        return self.stock

    def save(self, *args, **kwargs):
        self.stock = self.stock.upper()

        return super(Vehicles, self).save(*args, **kwargs)

形式：

from django import forms
from models import Vehicles


class VehiclesForm(forms.ModelForm):
    class Meta:
        model = Vehicles

这是一个模型形式。 Firebug和控制台确实报告POST实际发生，但记录没有更新。

欣赏任何你意识到这是错误的。

Answer 1

因为，没有答案......

首先，由于您没有以任何方式修改表单，因此您无需指定它 - 默认情况下，ModelForm隐含在UpdateView中。所以，你不需要这个：

form_class=VehiclesForm

然后，在您的模型中（这是巨大的）您不需要blank=False - 它也是默认值。

我认为你的问题在于现场验证程序。你的模板html-form只渲染了一些字段，但你的模型有更多（重要的是 - 它们不是可选的，它们没有默认值）。因此，您根本看不到验证错误。

如果你像这样渲染整个表格：

<form method="POST">{% csrf_token %}

    {{ form.as_p }}

    <button type="submit"> Save</button>
    <a href="javascript:close_window();"> Close</a>
</form>

...您将看到验证错误！

PS：如果你只想渲染那些字段，你必须：

1）使用这些字段的列表指定fields属性：

# django doc example    
class AuthorUpdate(UpdateView):
        model = Author
        fields = ['name']
        template_name_suffix = '_update_form'

2）确保您提供所有需要的数据（默认或通过表单字段显式）以保存模型实例。

3）阅读Django文档 - 它非常详细和细致，祝你好运！

Answer 2

对我来说，我必须改变

<form action="." .....>

到

<form action="" ..... >

django UpdateView不保存表单

2 个答案: