我将如何使用 django.forms 用模型中的行预填充选择字段？

发布于 2024-10-10 09:54:20 字数 687 浏览 0 评论 0原文

我的表单类中有一个 ChoiceField，大概是用户列表。如何使用我的用户模型中的用户列表预先填充此内容？

我现在所拥有的是：

class MatchForm(forms.Form):

  choices = []

  user1_auto = forms.CharField()
  user1 = forms.ChoiceField(choices=choices)
  user2_auto = forms.CharField()
  user2 = forms.ChoiceField(choices=choices)

  def __init__(self):
      user_choices = User.objects.all()
      for choice in user_choices:
          self.choices.append(
              (choice.id, choice.get_full_name())
          )

这似乎不起作用（否则我就不会在这里）。想法？

澄清一下，当我尝试在模板中呈现此表单时，它不会输出任何内容，除非我删除 ChoiceFields 和 __init__() 方法。

另外，如果我只想要我的字段中的用户全名列表怎么办？也就是说，我想控制每个用户对象的显示输出（因此 ModelChoiceField 并不是真正的选项）。

原文

I have a ChoiceField in my form class, presumably a list of users. How do I prepopulate this with a list of users from my User model?

What I have now is:

class MatchForm(forms.Form):

  choices = []

  user1_auto = forms.CharField()
  user1 = forms.ChoiceField(choices=choices)
  user2_auto = forms.CharField()
  user2 = forms.ChoiceField(choices=choices)

  def __init__(self):
      user_choices = User.objects.all()
      for choice in user_choices:
          self.choices.append(
              (choice.id, choice.get_full_name())
          )

This doesn't seem to work (otherwise I wouldn't be here). Thoughts?

To clarify, when I attempt to render this form in a template, it simply outputs nothing, unless I remove the ChoiceFields and __init__() method.

Also, what if I only want a list of the users' full names in my field? That is, I'd like to control the display output of each user object (so ModelChoiceField isn't really an option).

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零度℉ 2024-10-17 09:54:20

看起来您可能正在寻找 ModelChoiceField。

user2 = forms.ModelChoiceField(queryset=User.objects.all())

不过，这不会显示全名，它只会在每个对象上调用 __unicode__ 来获取显示的值。

如果您不想只显示 __unicode__，我会这样做：

class MatchForm(forms.Form):
    user1 = forms.ChoiceField(choices = [])

    def __init__(self, *args, **kwargs):
        super(MatchForm, self).__init__(*args, **kwargs)
        self.fields['user1'].choices = [(x.pk, x.get_full_name()) for x in User.objects.all()]

It looks like you may be looking for ModelChoiceField.

user2 = forms.ModelChoiceField(queryset=User.objects.all())

This won't show fullnames, though, it'll just call __unicode__ on each object to get the displayed value.

Where you don't just want to display __unicode__, I do something like this:

class MatchForm(forms.Form):
    user1 = forms.ChoiceField(choices = [])

    def __init__(self, *args, **kwargs):
        super(MatchForm, self).__init__(*args, **kwargs)
        self.fields['user1'].choices = [(x.pk, x.get_full_name()) for x in User.objects.all()]

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醉态萌生 2024-10-17 09:54:20

class MatchForm(forms.Form):
  choices = tuple(User.objects.all().values_list())

  user1_auto = forms.CharField()
  user1 = forms.ChoiceField(choices=choices)
  user2_auto = forms.CharField()
  user2 = forms.ChoiceField(choices=choices)

这应该有效。

class MatchForm(forms.Form):
  choices = tuple(User.objects.all().values_list())

  user1_auto = forms.CharField()
  user1 = forms.ChoiceField(choices=choices)
  user2_auto = forms.CharField()
  user2 = forms.ChoiceField(choices=choices)

This should work.

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