forms.py 文件源码

def __init__(self, *args, **kwargs):
        super(LoginForm, self).__init__(*args, **kwargs)
        self.fields['username'].widget = widgets.TextInput(attrs={'placeholder': "username", "class": "form-control"})
        self.fields['password'].widget = widgets.PasswordInput(
            attrs={'placeholder': "password", "class": "form-control"})