Question

编辑1

Models.py

class Post(models.Model):
    category = models.ForeignKey(Category)
    pub_date = models.DateTimeField(auto_now_add = True)
    title = models.CharField(max_length = 100)
    content = FroalaField()
    url = models.URLField(max_length=250, blank=True, null=True)
    moderator = models.ForeignKey(User)
    rank_score = models.FloatField(default= 1)

    views = models.IntegerField(default=0)
    image = models.ImageField(upload_to="images",blank=True, null=True)
    slug = models.CharField(max_length=100, unique=True)

    objects = models.Manager()            # default manager

    @property
    def domain(self):
        return urlparse(urlsplit(self.url)).netloc if self.url else "a"

这里; s我的forms.py

class PostForm(forms.ModelForm):
    title = forms.CharField(max_length=128, help_text="plz enter")

    url = forms.URLField(max_length=200,
                         help_text="Please enter the URL of the page.")
    views = forms.IntegerField(widget=forms.HiddenInput(), initial=0)
    content = forms.CharField(widget=FroalaEditor)
    class Meta:
        model = Post

        exclude = ['pub_date', 'moderator', 'rank_score', 'image','slug']

我从这里得到无效的语法错误：return urlparse（urlsplit（self.url））。netloc if self.url else＆＃34; a＆＃34;

Answer 1

尝试更改：

url = forms.URLField(max_length=200,
                         help_text="Please enter the URL of the page.")

为：

url = forms.URLField(max_length=200,
                     help_text="Please enter the URL of the page.",
                     required=False)

Answer 2

您正在使用ModelForm，因此不必覆盖表单中的url字段。

class PostForm(forms.ModelForm):

    class Meta:
        model = Post
        fields = ('title', 'url', 'views', 'content', 'moderator', 'slug', 'objects')
        widgets = {
            'content': FroalaEditor(),  # Not sure if this widget is valid
            'views':forms.HiddenInput()
        }

您还可以将帮助文本添加到模型中（请参阅help_text docs）

我将url设置为blank = null，但它表示url是必填字段

2 个答案: