Question

我正在使用CreateView在前端上创建条目，然后保存到数据库/后端。但是每次我单击“保存”或提交表单时，都会按预期成功重定向，但不会保存到后端。

我尝试将success_url添加到我的views.py中，也将get_absolute_url（self）添加到我的models.py中，但仍然无法正常工作。

Views.py

class Dashboard (LoginRequiredMixin, CreateView): 
    model = PostedJob
    template_name ='accounts/dashboard.html'
    fields = ['firstname', 'lastname', 'job_title', 'email', 'budget', 
             'country', 'state', 'address', 'job_category', 
             'description', 'photo']
    success_message = "Redirect successfully created!"
    login_url= 'login'

models.py

Type = (
       ('building inspection', 'Building Inspection'),
       ('agriculture', 'Agriculture'),
       ('construction', 'Construction'),
       ('maintenance & training', 'Maintenance & Training'),
       ('surveying & mapping', 'Surveying & Mapping'),
       ('events coverage', 'Events Coverage'),
    )

 class PostedJob(models.Model):
  firstname=models.CharField(max_length=200)
  lastname=models.CharField(max_length =150)
  email=models.EmailField(max_length =150)
  job_title= models.CharField(max_length =150)
  budget=models.PositiveIntegerField()
  country=models.CharField(max_length = 150)
  state=models.CharField(max_length = 150)
  address=models.CharField(max_length = 150)
  job_category=models.CharField(choices=Type, default ='agriculture', 
  max_length=50 )
  photo= models.ImageField(upload_to='/%Y/%m/%d/', blank=False, 
  null=False)
  description=models.TextField(max_length = 1500)
  post_date=models.DateTimeField(default = datetime.now, blank=True)
  publish=models.BooleanField(default =False)

  def __str__(self):
    return self.job_title

  def get_absolute_url(self):
    return reverse('home')

urls.py

  urlpatterns =[
    path('accounts/dashboard', Dashboard.as_view(), name='dashboard'),
 ]

index.html

<form action="" method="post">
  {% csrf_token %}
  {{form.as_p}}
   <div>
     <input type="submit" id="submit" value="Submit" class="btn waves- 
      effect waves-grey green">
   </div>
</form>

该表单也不会显示任何错误消息。我真的很感谢您的帮助。谢谢。

Answer 1

The form shows no errors but using the following SQL queries in Python prompt 
revealed the error :

from django.db import connection
cursor = connection.cursor()

error: django.core.exceptions.ImproperlyConfigured: Requested setting DATABASES, but settings are 
not configured. You must either define the environment variable DJANGO_SETTINGS_MODULE or call 
settings.configure() before accessing settings.

** Updated**

但是，环境变量并不能真正解决这个问题。问题实际上出在表单本身。表单上有一个图像字段，默认情况下是必填字段。表单即使单击成功重定向，也没有保存到数据库。原因是由于所有字段都是必填字段，因此图像将在每次保存或提交操作时返回空白字段，从而导致表单始终不保存在每个提交操作中。

Solution: Simply add enctype="multipart/form-data to your form. 

<form action="" method="POST" enctype="multipart/form-data">

Django的表单不保存到数据库？

1 个答案: