python - ModelChoiceField 初始值变化形式

Question

首先是代码:

class CommentForm(forms.ModelForm):
    categories = forms.ModelChoiceField(queryset = Category.objects.all(), required = False)

class CommentAdmin(admin.ModelAdmin):
    form    = CommentForm

当我编辑我的评论时，我希望类别字段具有我上次保存时选择的初始值。我该怎么做？

Answer 1

def get_form(self, *args, **kwargs):
        f = super(CommentAdmin, self).get_form(*args, **kwargs)
        f.base_fields['categories'].initial = 1

        return f

放置在 CommentAdmin 中的这段代码起到了作用...

编辑:

def __init__(self, *args, **kwargs):
        super(CommentForm, self).__init__(*args, **kwargs)

        self.fields['categories'].initial = self.instance.object_id

或者这段代码放在 CommentForm 中