python - build_attrs() 得到了一个意外的关键字参数 'type'

Question

我正在使用 django 框架并尝试集成一个 paypal 支付网关。但是我收到了这个错误

build_attrs() got an unexpected keyword argument 'type'

Django 版本:1.11.11
Python版本:3.6.3
异常值:build_attrs() 得到了一个意外的关键字参数“type”
异常位置:/home/iuser/anaconda3/lib/python3.6/site-packages/paypal/standard/widgets.py in render, line 35

from django import forms
try:
    from django.forms.utils import flatatt # Django 1.7 and later
except ImportError:
    from django.forms.util import flatatt # earlier

from django.utils.safestring import mark_safe
from django.utils.encoding import force_text


class ValueHiddenInput(forms.HiddenInput):
    """
    Widget that renders only if it has a value.
    Used to remove unused fields from PayPal buttons.
    """

    def render(self, name, value, attrs=None):
        if value is None:
            return u''
        else:
            return super(ValueHiddenInput, self).render(name, value, attrs)


class ReservedValueHiddenInput(ValueHiddenInput):
    """
    Overrides the default name attribute of the form.
    Used for the PayPal `return` field.
    """

    def render(self, name, value, attrs=None):
        if value is None:
            value = ''
        final_attrs = self.build_attrs(attrs, type=self.input_type)
        if value != '':
            final_attrs['value'] = force_text(value)
        return mark_safe(u'<input%s />' % flatatt(final_attrs))

Answer 1

在django-1.11 build_attrs 函数已按照 release notes [Django-doc] 中的规定进行更改:

The signature of private API Widget.build_attrs() changed from extra_attrs=None, **kwargs to base_attrs, extra_attrs=None.

您需要将调用更改为:

class ReservedValueHiddenInput(ValueHiddenInput):
    """
    Overrides the default name attribute of the form.
    Used for the PayPal `return` field.
    """

    def render(self, name, value, attrs=None):
        if value is None:
            value = ''
        final_attrs = <b>self.build_attrs(attrs, {'type': self.input_type})</b>
        if value != '':
            final_attrs['value'] = force_text(value)
        return mark_safe(u'<input%s />' % flatatt(final_attrs))