Question

我正在创建一个图片共享网站....

问题1：这是图像搜索页面的屏幕截图 enter image description here 这里的问题是，当我按标签搜索时，会出现错误消息：Related Field got invalid lookup: icontains

问题2：这是图像上传页面的屏幕截图 enter image description here 问题是，我只能选择标签但不能在这里输入新标签。我希望它能够让图像的上传者输入最多10个标签....

以下是我的代码：

models.py

class Tag(models.Model):
    tag_name = models.CharField(max_length=50)
    def __str__(self):
        return self.tag_name


class Image(models.Model):
    category = models.ForeignKey(Category,  blank=True, null=True, on_delete=models.DO_NOTHING)
    in_gallery = models.ManyToManyField(Gallery,  blank=True)
    tag = models.ManyToManyField(Tag, blank=True)
    title = models.CharField(max_length=100)
    photo = models.FileField()
    description = models.CharField(max_length=1000)
    def __str__(self):
        return self.title + '-' + self.description

    def regions_changed(sender, **kwargs):
        if kwargs['instance'].tag.count() > 1:
            raise ValidationError("You can't assign more than three regions")


class ImageTag (models.Model):
    image = models.ForeignKey(Image,  blank=True, null=True, on_delete=models.DO_NOTHING)
    tag = models.ForeignKey(Tag,  blank=True, null=True, on_delete=models.DO_NOTHING)

filters.py

class ImageFilter(django_filters.FilterSet):
    title = django_filters.CharFilter(lookup_expr='icontains')
    description = django_filters.CharFilter(lookup_expr='icontains')
    tag = django_filters.CharFilter(lookup_expr='icontains')
    class Meta:
        model = Image
        fields = ['title', 'description', 'category', 'tag']


class NullFilter(django_filters.FilterSet):
    class Meta:
        model = Image
        fields = ['upload_date']

views.py

class ImageCreate (CreateView):
    model = Image
    fields = ['category', 'title', 'photo', 'description', 'tag']
    def form_valid(self, form):
        form.instance.owner = self.request.user.profile
        return super().form_valid(form)

image_form.html

<form class="form-horizontal" action="" method="post" enctype="multipart/form-data">
    {% csrf_token %}
    {% include 'imagebank/form-template.html' %}
            <button type="submit" class="btn btn-success">Submit</button>
</form>

Django：`相关字段无效查找：icontains`

0 个答案: