У объекта 'str' нет атрибута 'стратегии' - django-oscar

Question

У меня проблемы с этой ошибкой в ​​django-oscar.

Я читал, что Promotion_tags.py не обрабатывал запрос в контексте. Но я видел код oscar внутри моего virtualenv, у него есть запрос внутри контекста

но странность в том, что функции из Promotion_tags.py не вызываются, поэтому в контексте отсутствует объект запроса. но я не уверен, что это единственное место, где объект запроса изменен / добавлен в контекст.

вот код, которому нужен объект запроса:

@register.simple_tag
def purchase_info_for_product(request, product):
    if product.is_parent:
        return request.strategy.fetch_for_parent(product)
    return request.strategy.fetch_for_product(product)

Я использую Джанго-Оскар 1-6 и Джанго 1.11.

вот полный трекбек:

2018-08-17 12:52:53,567 django.request ERROR    Internal Server Error: /category/beauty-wellness_9/
Traceback (most recent call last):
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
    response = get_response(request)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/core/handlers/base.py", line 217, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/core/handlers/base.py", line 215, in _get_response
    response = response.render()
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/response.py", line 107, in render
    self.content = self.rendered_content
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/response.py", line 84, in rendered_content
    content = template.render(context, self._request)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/backends/django.py", line 66, in render
    return self.template.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 207, in render
    return self._render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/test/utils.py", line 107, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/loader_tags.py", line 177, in render
    return compiled_parent._render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/test/utils.py", line 107, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/loader_tags.py", line 177, in render
    return compiled_parent._render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/test/utils.py", line 107, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/loader_tags.py", line 177, in render
    return compiled_parent._render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/test/utils.py", line 107, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/loader_tags.py", line 72, in render
    result = block.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/loader_tags.py", line 72, in render
    result = block.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/loader_tags.py", line 72, in render
    result = block.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 1040, in render
    output = self.filter_expression.resolve(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 708, in resolve
    obj = self.var.resolve(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 849, in resolve
    value = self._resolve_lookup(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 911, in _resolve_lookup
    current = current()
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/loader_tags.py", line 86, in super
    return mark_safe(self.render(self.context))
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/loader_tags.py", line 72, in render
    result = block.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/defaulttags.py", line 322, in render
    return nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/defaulttags.py", line 216, in render
    nodelist.append(node.render_annotated(context))
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/library.py", line 245, in render
    return t.render(new_context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 209, in render
    return self._render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/test/utils.py", line 107, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/loader_tags.py", line 63, in render
    result = self.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/loader_tags.py", line 63, in render
    result = self.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/loader_tags.py", line 216, in render
    return template.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 209, in render
    return self._render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/test/utils.py", line 107, in instrumented_test_render
    return self.nodelist.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 990, in render
    bit = node.render_annotated(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/base.py", line 957, in render_annotated
    return self.render(context)
  File "/home/vagrant/.virtualenvs/goldmarie/lib/python3.6/site-packages/django/template/library.py", line 203, in render
    output = self.func(*resolved_args, **resolved_kwargs)
  File "/home/vagrant/goldmarie/goldmarie/templatetags/gm_purchase_info_tags.py", line 13, in purchase_info_for_product
    return request.strategy.fetch_for_product(product)
AttributeError: 'str' object has no attribute 'strategy'

здесь происходит исключение

Answer 1

Смотрите здесь, как передать контекст шаблона в теги шаблона:

@register.simple_tag(takes_context=True)
def purchase_info_for_product(context, product):
    request = context['request']
    if product.is_parent:
        return request.strategy.fetch_for_parent(product)
    return request.strategy.fetch_for_product(product)

С вашим оригинальным кодом, вы передаете product в качестве request параметр.

В качестве альтернативы, если тег встроен в Оскар, передайте запрос:

{% purchase_info_for_product request product %}

Answer 2

Передайте аргумент стратегии в вашей функции. Но в качестве основной проблемы вы вносите изменения в приложение Basket и не наследуете стратегию, разработанную для корзины. Это все, что я могу вам сказать тем, что вижу в вашем вопросе. Если вы можете опубликовать полный код, связанный с вашим приложением, вы разветвились с полной ошибкой, создав "суть". Это будет довольно легко отлаживать.:-)