从django表格获取图片网址

Question

我很难从django形式获取图像url.

模型:

class Sponsor(models.Model):
    image = ProcessedImageField(upload_to='sponsors/', 
                                processors=[SmartResize(300, 120, upscale=False)],
                                format='JPEG', 
                                options={'quality': 100}, 
                                null=True)

形成:

class SponsorForm(forms.ModelForm):

    class Meta:
        model = Sponsor
        fields = ('image',)

我使用时渲染它:

{{ sponsorform.image }}

它打印:

Currently: <a href="/media/sponsors/random1.jpg">sponsors/random1.jpg</a> <br>Change: <input id="id_sponsor-image" name="sponsor-image" type="file">

所以我的问题是,如何在模板中获取该URL？我试过了:

{{ sponsorform.image.url }}
{{ sponsorform.image.path }}
{{ sponsorform.image.href }}

但似乎没有任何效果,任何建议？

Answer 1

你应该尝试{{ sponsorform.instance.image.url }}。如果表单不受限制，则可以执行以下操作：

{% if sponsorform.instance.image %}
    {{ sponsorform.instance.image.url }}
{% endif %}