问题描述
我有一个包含使用 RadioSelect 小部件的 ModelChoiceField 的 ModelForm.
I have a ModelForm that contains a ModelChoiceField using the RadioSelect widget.
class MyAForm(forms.ModelForm):
one_property = models.ModelChoiceField(
widget=forms.RadioSelect,
queryset=MyBModel.objects.filter(visible=True),
empty_label=None)
class Meta:
model = MyAModel
我想在单选按钮旁边显示 MyBModel 上的一些属性.我会在 ModelChoiceField 的子类上覆盖 label_from_instance
,但这不允许我做我想做的事情,因为我希望单选按钮出现在一个表中,每个选择项都有一行.
There are attributes on MyBModel that I want to display next to the radio button. I would override label_from_instance
on a sub-class of ModelChoiceField but this does not allow me to do what I want as I want the radio button to appear inside a table which has a row for each selection item.
所以在我的模板中的某个地方,我想要一些类似...
So somewhere in my template I want something like...
{% for field in form.visible_fields %}
{% if field.name == "one_property" %}
<table>
{% for choice in field.choices %}
<tr>
<td><input value="{{choice.id}}" type="radio" name="one_property" />{{choice.description}}</td>
<td><img src="{{choice.img_url}}" /></td>
</tr>
{% endfor %}
</table>
{% endif %}
{% endfor %}
不幸的是,field.choices 返回对象的 id 和标签的元组,而不是查询集中的实例.
Unfortunately field.choices returns a tuple of the object's id and the label and not an instance from the queryset.
是否有一种简单的方法可以获取要在模板中使用的 ModelChoiceField 的选项实例?
Is there a simple way to get instances of the choices for a ModelChoiceField to use within a template?
推荐答案
在深入研究 ModelChoiceField 的 django 源代码后,我发现它有一个属性queryset".
After delving into the django source for ModelChoiceField I discovered it has a property "queryset".
我能够使用类似...
{% for field in form.visible_fields %}
{% if field.name == "one_property" %}
<table>
{% for choice in field.queryset %}
<tr>
<td><input value="{{choice.id}}" type="radio" name="one_property" />{{choice.description}}</td>
<td><img src="{{choice.img_url}}" /></td>
</tr>
{% endfor %}
</table>
{% endif %}
{% endfor %}
这篇关于如何在模板中获取 ModelChoiceField 实例的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!