缩小Django形式的选择范围

我是这样限制显示的选项的:

在forms.py中添加一个 初始化

class TaskForm(forms.ModelForm):
    ....

    def __init__(self, user, *args, **kwargs):
        '''
        limit the choice of owner to the currently logged in users hats
        '''

        super(TaskForm, self).__init__(*args, **kwargs)

        # get different list of choices here
        choices = Who.objects.filter(owner=user).values_list('id','name')
        self.fields["owner"].choices = choices

选项仅适用于列表,不适用于CharFields。你需要做的是创建一个 custom validator on clean() .

在forms.py中

CAMPAIGN_TYPES = ('email', 'display', 'search')

# this would be derived from your Campaign modelform
class EnhancedCampaignForm(CampaignForm):
    # override clean_FIELD
    def clean_type(self):
        cleaned_data = self.cleaned_data
        campaign_type = cleaned_data.get("type")

        # strip whitespace and lowercase the field string for better matching
        campaign_type = campaign_type.strip().lower()

        # ensure the field string matches a CAMPAIGN_TYPE, otherwise 
        # raise an exception so validation fails
        if not campaign_type in CAMPAIGN_TYPE:
            raise forms.ValidationError("Not a valid campaign type.")

        # if everything worked, return the field's original value
        return cleaned_data

class CampaignForm(ModelForm):
    type = forms.ModelChoiceField(queryset=OtherModel.objects.filter(type__id=1))
    class Meta:
        model = Campaign

我现在不确定如何传递“1”,但即使需要硬编码,这也足够了。此外,它让Django完成了大部分繁重的工作。

@soviut我将把字段名更改为非保留字。谢谢你的提醒。