FILEFIELD 属性没有与之关联的文件

如何解决FILEFIELD 属性没有与之关联的文件

当我尝试使用图像字段更新表单时，此错误不断出现。我正在尝试上传或更新客户 logo 图片。

当我尝试上传图片时，包含图片的字段显示“[field] 属性没有与之关联的文件”

我正在使用模型表单和通用更新视图。我不知道如何使该属性具有与之关联的文件。

我在模型中尝试了 save() 覆盖，但它仍然给了我那个错误。

models.py

class Customers(models.Model):
    associations = models.ManyToManyField(Association)
    company_name = models.CharField(help_text='Company Name',max_length=200,default=None)
    contact1_first_name = models.CharField(help_text='Primary Contact First name',max_length=50,default=None)
    contact1_last_name = models.CharField(help_text='Primary Contact Last name',default=None)
    address1 = models.CharField(help_text='Address 1',default=None)
    address2 = models.CharField(help_text='Address 2',default=None,blank=True)
    city = models.CharField(help_text='City',default=None)
    state = models.CharField(help_text='State',default=None)
    zip_code = models.CharField(help_text='Postal/ZIP',max_length=20,default=None)
    phone = models.CharField(help_text='Phone',default=None)
    email = models.EmailField(default=None)
    contact2_first_name = models.CharField(max_length=50,null=True,blank=True)
    contact2_last_name = models.CharField(max_length=50,blank=True)
    contact2_phone = models.CharField(help_text='Phone',blank=True)
    contact2_email = models.EmailField(default=None,blank=True)
    fax = models.CharField(max_length=20,blank=True)
    mobile = models.CharField(max_length=50,blank=True,null=True)
    web_address = models.CharField(max_length=50,blank=True)
    date_entered = models.DateTimeField(auto_Now_add=True)
    is_active = models.BooleanField(default=True)
    date_turned_off = models.DateTimeField(default=None,blank=True)
    num_locs = models.SmallIntegerField(default=1)
    notes = models.TextField(help_text='Notes',default=None)
    vertical_cat = models.IntegerField(default=0)
    custom_cat = models.IntegerField(default=0)
    logo = models.FileField(upload_to='media/cust-logs/',blank=True)
    max_scripts = models.IntegerField(default=0)
    branch_custom_scripts = models.BooleanField(default=False)
    receive_emails = models.BooleanField(default=True)
    customer_rep_id = models.SmallIntegerField(default=0,null=True)
    customer_writer_id = models.SmallIntegerField(default=0,null=True)
    customer_male_vt_id = models.SmallIntegerField(default=0,null=True)
    customer_fem_vt = models.SmallIntegerField(default=0,null=True)
    customer_sales_rep = models.SmallIntegerField(default=0,null=True)
    contract_date_first = models.DateTimeField(default=None,blank=True)
    contract_date_renewal = models.DateTimeField(default=None,blank=True)
    contract_billing_type = models.CharField(max_length=200,blank=True)
    anniversary = models.DateTimeField(default=None,blank=True)
    is_on_contract = models.BooleanField(default=False)
    internal_flag = models.IntegerField(default=0,null=True)
    shuff_freq_pref = models.SmallIntegerField(default=0,blank=True)
    shuff_freq_upd = models.DateTimeField(default=None,blank=True)
    shuff_freq_7 = models.BooleanField(default=True)
    shuff_freq_14 = models.BooleanField(default=True)
    shuff_freq_30 = models.BooleanField(default=True)
    shuff_freq_60 = models.BooleanField(default=True)
    shuff_freq_90 = models.BooleanField(default=True)
    shuff_freq_180 = models.BooleanField(default=False)
    shuff_walk_thru = models.DateTimeField(default=None,blank=True)
    shuff_walk_thru_by = models.ForeignKey(Emp,related_name='+',on_delete=models.CASCADE)
    cust_classification = models.ForeignKey(CustomerClasses,on_delete=models.CASCADE)
    date_updated = models.DateTimeField(auto_Now=True,blank=True)
    updated_by = models.SmallIntegerField(default=0)
    audit_note = models.TextField(default=None,blank=True)
    audit_exception = models.BooleanField(default=False)
    audit_date = models.DateTimeField(auto_Now_add=True)
    script_exception = models.BooleanField(default=False)
    script_exception_date = models.DateTimeField(default=None,blank=True)
    reports_exception = models.BooleanField(default=False)
    reports_exception_date = models.DateTimeField(default=None,blank=True)
    using_script_credits = models.BooleanField(default=False)

    def __str__(self):
        return self.company_name

    def save(self):
        super().save()

        img = Image.open(self.logo.path)

        if img.height > 300 or img.width > 300:
            output_size = (300,300)
            img.thumbnail(output_size)
            img.save(self.logo.image)

我把它改成上传到 S3，记录中有一个图片路径，上面写着“这个后端不支持绝对路径。”

views.py

class CustomerUpdateView(LoginrequiredMixin,UpdateView):
    model = Customers
    template_name = 'customers/customer_form.html'
    fields = 'company_name','contact1_first_name','contact1_last_name','contact2_first_name',\
                 'contact2_last_name','contact2_email','contact2_phone','address1','address2',\
                 'city','state','zip_code','phone','email','mobile','web_address','notes',\
                 'cust_classification','logo'
    success_url = 'customers:cust-home'

    def form_valid(self,form):
        return super().form_valid(form)

    def save(self):
        user = super(CustomerForm,self).save()
        x = self.cleaned_data.get('x')
        y = self.cleaned_data.get('y')
        w = self.cleaned_data.get('w')
        h = self.cleaned_data.get('h')

        image = Image.open(user.primaryphoto)
        cropped_image = image.crop(x,y,w + x,h,+ y)
        resized_image = cropped_image.resize((200,200),Image.ANTIALIAS)

        fh = storage.open(user.primaryphoto.name,"wb")
        picture_format = 'png'
        resized_image.save(fh,picture_format)
        fh.close()
        return user

我从另一个 StackOverflow 帖子中借用了上面的一些 save() 部分。

这是我的客户表单

forms.py

class CustomerForm(forms.ModelForm):
    class Meta:
        model = Customers
        fields = 'company_name',\
                 'contact1_last_name',\
                 'contact2_phone',\
                 'mobile','shuff_walk_thru_by','logo','associations'

我今天的 Django 项目只是一团糟。它非常庞大，我已经研究了 2 个月，哈哈。