如何从渲染中排除Django表单字段，但仍将其保留以进行验证？ [英] How to exclude django form field from render but still keep it for validation?

问题描述

如果我有模型（提取）：

If I have a model (extract):

class Coupon(models.Model):
    image = models.ImageField(max_length=64, null=True, upload_to="couponimages")

（提取）：

class InsertCoupon(forms.ModelForm):
    image=forms.ImageField(
        required=False, #note explicitly declared false
        max_length=64,
        widget=forms.FileInput() 
        )
    class Meta:
        model=Coupon,
        exclude = ("image",)

然后我注意到图像字段在我做 {{form.as_table}} 。如果我从表单类中删除该字段的显式声明，则它不会呈现，但是我无法获得表单验证和将模型表单轻松插入数据库的好处。我想为此字段使用自己的小部件（ FileInput 很丑陋）-我是否必须自己编写所有html代码，或者有没有办法使用 as_table ？

Then I notice that the image field is still rendered when I do {{ form.as_table }}. If I remove the explicit declaration of the field from the form class, then it doesn't render, but I don't get the benefit of form validation and easy modelform insertion to the database. I want to use my own widget for this field (FileInput is ugly) - do I have to hence code all the html myself, or is there a way to use as_table?

推荐答案

这样一种更好的方法是只在模板中排除单个字段可能是：

So a better way to exclude just a single field in the template might be:

<table>
{% for field in form %}
    {% if field != "image" %}
    <tr><td>{{ field }}</td></tr>
    {% endif %}
{% endfor %}
</table>

手动删除所有字段。

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