Python django.contrib.admin.widgets 模块，AdminIntegerFieldWidget() 实例源码

def formfield(self, **kwargs):
        defaults = {'form_class': forms.CharField}
        defaults.update(kwargs)
        if defaults.get('widget') == admin_widgets.AdminIntegerFieldWidget:
            defaults['widget'] = admin_widgets.AdminTextInputWidget
        return super(HashidField, self).formfield(**defaults)