Python 更新至1.11:TypeError build_attrs（）最多接受2个参数（给定3个）

我从1.10.7更新到1.11.0，在查看表单时出现以下错误。我根本不知道我的身体出了什么问题。其他形式也以同样的方式工作。我怀疑这可能是与或的交互，但没有迹象表明它们与1.11不兼容

我如何进一步调试它

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/core/handlers/exception.py" in inner
  41.             response = get_response(request)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
  187.                 response = self.process_exception_by_middleware(e, request)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
  185.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/contrib/auth/decorators.py" in _wrapped_view
  23.                 return view_func(request, *args, **kwargs)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/contrib/auth/decorators.py" in _wrapped_view
  23.                 return view_func(request, *args, **kwargs)

File "/home/usr/repos/intranet/isotek_intranet_site/order_book/views.py" in create
  161.     return render(request, 'order_book/create.html', context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/shortcuts.py" in render
  30.     content = loader.render_to_string(template_name, context, request, using=using)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/loader.py" in render_to_string
  68.     return template.render(context, request)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/backends/django.py" in render
  66.             return self.template.render(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/base.py" in render
  207.                     return self._render(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/base.py" in _render
  199.         return self.nodelist.render(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/base.py" in render
  990.                 bit = node.render_annotated(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/base.py" in render_annotated
  957.             return self.render(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  177.             return compiled_parent._render(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/base.py" in _render
  199.         return self.nodelist.render(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/base.py" in render
  990.                 bit = node.render_annotated(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/base.py" in render_annotated
  957.             return self.render(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/loader_tags.py" in render
  72.                 result = block.nodelist.render(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/base.py" in render
  990.                 bit = node.render_annotated(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/base.py" in render_annotated
  957.             return self.render(context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/base.py" in render
  1046.         return render_value_in_context(output, context)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/template/base.py" in render_value_in_context
  1024.     value = force_text(value)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/utils/encoding.py" in force_text
  78.                 s = six.text_type(s)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/utils/html.py" in <lambda>
  376.         klass.__unicode__ = lambda self: mark_safe(klass_unicode(self))

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/forms/boundfield.py" in __str__
  41.         return self.as_widget()

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/forms/boundfield.py" in as_widget
  120.             **kwargs

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/forms/widgets.py" in render
  220.         context = self.get_context(name, value, attrs)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/forms/widgets.py" in get_context
  665.         context = super(Select, self).get_context(name, value, attrs)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/forms/widgets.py" in get_context
  626.         context = super(ChoiceWidget, self).get_context(name, value, attrs)

File "/home/usr/.virtualenvs/intranet/lib/python2.7/site-packages/django/forms/widgets.py" in get_context
  211.             'attrs': self.build_attrs(self.attrs, attrs),

Exception Type: TypeError at /order_book/create/
Exception Value: build_attrs() takes at most 2 arguments (3 given)

表格：

class MyForm(forms.ModelForm):

    class Meta:
        model = MyModel
        fields = '__all__'
        widgets = {
           'manager': Select2Widget(attrs={'style': 'min-width:400px'}),
        }

---

他们更改了Django 1.11中的build_attrs函数/

您可能还需要使用pip升级select2和markdownx

pip安装选择2 markdownx--升级

在Django 1.11更新中，他们将build\u attrs类更改为仅使用2个参数，此时所有额外的参数现在都应以dict形式传递

因此，当您使用使用build\u attrs函数的自定义小部件时，需要将build\u attrs调用从以下位置更改：

build_attrs(attrs, foo='bizz', bar='baz')

致：

---

因此，罪魁祸首是Select2类。您可以通过使用新方法对渲染函数进行超级分类和覆盖来修复它，或者您可以检查作者是否有更新。

@Alasdair我这样做了，如果有帮助的话。

class MyForm(forms.ModelForm):

    class Meta:
        model = MyModel
        fields = '__all__'
        widgets = {
           'manager': Select2Widget(attrs={'style': 'min-width:400px'}),
        }

build_attrs(attrs, foo='bizz', bar='baz')

build_attrs(attrs, {'foo':'bizz', 'bar':'baz'})