模型表单集和日期字段

发布于 2024-07-20 04:22:00 字数 294 浏览 5 评论 0原文

我在模型上有一个模型表单集，其中包含几个日期字段 - 这又是模型中的 DateTimeField。但当它显示在模板中时，它显示为文本字段。如何将其显示为下拉框？

WFormSet = inlineformset_factory(UserProfile, W, can_delete=False,exclude=[<list of fields to be excluded>], extra=3)

这就是我初始化模型表单集的方式。

我如何覆盖这些设置

原文

I have a model formset on a model with a couple of date fields - which again is a DateTimeField in the model.
But when it displays in the template, it is shown as a text field.
How can I show it as a drop down box ?

WFormSet = inlineformset_factory(UserProfile, W, can_delete=False,exclude=[<list of fields to be excluded>], extra=3)

This is how I am intializing the modelformset.

How do I override these settings

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半岛未凉 2024-07-27 04:22:00

通常的方法是覆盖 ModelForm 定义中的默认字段类型。

如果您的模型中有一个 DateField，则下面的示例将起作用（我注意到您有一个 DateTimeField...我稍后会回到这个问题）。您将指定与通常指定的字段类型完全相同的字段类型，但您将向表单字段构造函数传递一个不同的小部件。

from django.db import models
from django import forms
from django.forms.extras import SelectDateWidget

class MyModel(models.Model):
    a_date_field = models.DateField()

class MyModelForm(forms.ModelForm):
    a_date_field = forms.DateField(widget=SelectDateWidget())

    class Meta:
        model = MyModel

据我所知，Django 1.0.x 中没有为 DateTimeField 提供等效的小部件。在这种情况下，您需要创建一个自定义小部件，可能是 SelectDateWidget 的子类。我通过对 SelectDateTimeWidget 的快速谷歌搜索发现，还有其他几个人一直在制作您正在寻找的小部件。我没有使用过它们，所以买者自负，但是类似这个 SelectDateTimeWidget patch< /a> 可能是一个很好的起点。

编辑：当使用 ModelFormset 或 InlineModelFormset 时，您仍然可以通过将 form=MyModelForm 传递给 inlineformet_factory 函数来实现此目的：

MyModelFormset = inlineformset_factory(MyParentModel, MyModel, form=MyModelForm)

这是有效的，因为两个模型表单集工厂实际上调用常规他们自己的实现中的 formset_factory 构造函数。这有点难以弄清楚，因为文档中没有明确说明...相反，Django 文档通过提及模型表单集工厂扩展了正常的 formset_factory 来暗示这种能力。每当我有疑问时，我都会打开 django/forms/models.py 来检查表单集工厂函数的完整签名。

The usual way to do this is to override the default field types in your ModelForm definition.

The example below would work if you had a DateField in your model (I note you have a DateTimeField... I'll come back to that in a sec). You're going to be specifying the exact same field type as would normally be specified, but you'll pass a different widget to the form field constructor.

from django.db import models
from django import forms
from django.forms.extras import SelectDateWidget

class MyModel(models.Model):
    a_date_field = models.DateField()

class MyModelForm(forms.ModelForm):
    a_date_field = forms.DateField(widget=SelectDateWidget())

    class Meta:
        model = MyModel

There isn't, to my knowledge, an equivalent widget provided for the DateTimeField in Django 1.0.x. In this case, you'll want to make a custom widget, perhaps subclassing SelectDateWidget. I note from a quick google on SelectDateTimeWidget that there have been several others who've been making what appear to be the widget you're seeking. I've not used them, so caveat emptor, but something like this SelectDateTimeWidget patch might be a good place to start.

Edit: When using a ModelFormset or InlineModelFormset, you can still achieve this by passing form=MyModelForm to the inlineformet_factory function:

MyModelFormset = inlineformset_factory(MyParentModel, MyModel, form=MyModelForm)

This works because the two model formset factories actually call the regular formset_factory constructor in their own implementations. It's a little hard to figure out because it's not explicitly stated in the docs... rather the Django docs allude to this ability by mentioning in passing that the model formset factories extend the normal formset_factory. Whenever I'm in doubt, I open django/forms/models.py to check out the full signature of the formset factory functions.

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