In admin, when using a proxy model the class method "decode_session_key" raises a key error

screenshot

Here's the code:

class UserCustomerManager(models.Manager):

    def get_queryset(self):
        qs = super(UserCustomerManager, self).get_queryset()
        qs = qs.filter(customer__isnull=False)
        return qs

class CustomerInlineAdmin(CustomerInlineAdminBase):
    fieldsets = (
        (None, {'fields': ('salutation', 'get_number', 'recognized',
                           'commercial_license_no', 'legal_structure',
                           'phone', 'logo')}),
        (_("Shipping Addresses"), {'fields': ('get_shipping_addresses',)})
    )

class CustomerAdmin(CustomerAdminBase):
    add_form = UserCreationForm
    form = UserChangeForm
    fieldsets = (
        (None, {'fields': ('email', 'password')}),
        (_('Permissions'), {'fields': ('is_active', 'is_staff', 'is_superuser',
                                       'groups', 'user_permissions')}),
        (_('Important dates'), {'fields': ('last_login', 'date_joined')})
    )
    add_fieldsets = (
        (None, {'fields': ('email', 'password1', 'password2'),
                'classes': ('wide',)}),
    )
    list_display = ['get_username', 'salutation', 'recognized', 'last_access',
                    'is_unexpired']
    inlines = (CustomerInlineAdmin,)

    def get_fieldsets(self, request, obj=None):
        return super(CustomerAdminBase, self).get_fieldsets(request, obj)


class UserCustomer(get_user_model()):

    objects = UserCustomerManager()

    class Meta:
        proxy = True
        verbose_name = _("customer")
        verbose_name_plural = _("customers")


admin.site.register(UserCustomer, CustomerAdmin)```

I am trying to setup the project by cloning and installing all the apps listed. when i try to run migrate I am getting the error LookupError: Model 'email_auth.User' not registered. Please help me out

Currently there are concrete and abstract models: BaseProductand Product, BaseCartand Cart, BaseCartItem and CartItem, BaseOrderand Order and finally, BaseOrderItem and OrderItem.

The concrete models are stored in shop.models, whereas abstract models are stored in shop.models_bases. This is quite confusing and makes it difficult to find the right model definition whenever one has to access the definition of one of the models. Additionally, if someone wants to override a model, he must use a configuration directive, say PRODUCT_MODEL, ORDER_MODEL, ORDER_MODEL_ITEM from the projects settings.py. This makes configuration quite complicate and causes other drawbacks:

• Unless someone overrides all models, the native ones appear in the administration backend below the category Show, while the customized ones appear under the given application name. To a customer, this backend inconsistency is quite difficult to explain.
• In the past, having overriden and native models caused some issues with circular dependencies.

Therefore my proposal is to remove all the configuration settings PRODUCT_MODEL, ORDER_MODEL, ORDER_MODEL_ITEM, etc. from django-shop. Additionally all concrete models, Product, Order, OrderItem, Cart, CartItem are removed from django-shop. These model definitions are just stubs, so removing them should not cause any harm. All abstract models are moved into the directory shop/models/; this is where a programmer expects them.

For an application using django-shop this should not be a big deal. Each application simply derives each model from one of the abstract base models and thus creates its concrete model. This also avoids another problem, one might easily encounter: Say, one starts with django-shop and uses the built-in Cart model. In the database this is handled by a table named shop_cart. Sometimes later, he decides to add an extra field to the model Cart. He then has to create a customized cart model in his own application, but now the database table will have a different name and it is not possible to override this using app_name in the model's Meta class. These kinds of migration are not handled by South and therefore he has to write a migration for renaming the table by hand.

Mapping of Foreign Keys

One might argue, that this can't work, since foreign keys must refer to a real model, not to abstract ones! Therefore one can not add a field ForeignKey, OneToOneField or ManyToManyField which refers an abstract model in the Django-Shop project. However, these relations are fundamental for a properly working software. Imagine a CartItem without a foreign relation to Cart.

Fortunately there is a neat trick to solve this problem. By deferring the mapping onto a real model, instead of using a real ForeignKey, one can use a special placeholder field defining a relation with an abstract model. Now, whenever the models are “materialized”, then these abstract relations are converted into real foreign keys. The only drawback for this solution is, that one may derive from an abstract model only once, but that's a non-issue and doesn't differ from the current situation, where one for instance, also can override Cart only once.

I therefore would strongly encourage to refactor Django-Shop, since this will hugely simplify the current model system.

Technical Details

Instead of using models.ForeignKey, models.OneToOneField or models.ManyToManyField, I use special pseudo-fields: DeferredForeignKey, DeferredOneToOneField and DeferredManyToManyField. During model instantiation, these pseudo-fields are replaced against real foreign keys.

Have a look at this meta class: https://github.com/jrief/django-shop/blob/refactor-models/shop/deferred.py

Now an abstract model can be defined as: https://github.com/jrief/django-shop/blob/refactor-models/shop/models/abstract.py

and the materialized model then is just as simple as:

from shop.models import abstract

class RealModel1(abstract.AbstractModel1):
    pass

class RealModel2(abstract.AbstractModel2):
    pass

class RealModel3(abstract.AbstractModel3):
    pass

Gone are the days with dozens of configurations settings to hard wire the real models in Django-Shop.

Cart modifiers can add additional text data beside label and value (this data would be saved in ExtraOrderPriceField and ExtraOrderItemPriceField models).

This allows filtering and identifying extra order and extra order item fields by some criteria.

This change is full backward compatible.

I hesitated to serialize extra data as json and tried to keep things as simple as possible.

Hi, I have a question about managing the available product quantity. I have reviewed the documentation and have not found any information about product stock management, as well status informing of product availability (Out in stock, Available, Waiting for delivery).

Are these solutions planned to be introduced at django-shop?

I have a question about creating a payment module for one of the operators. The operator I want to integrate requires that POST data to the transaction log after it returns a token for further authorization. One of these data is OrderId, which can be sent only once to the payment system. After this authorization and status check is carried out by the token given when the payment is registered.

Should I implement the payment as it is with the "Pay in advance" method? Where an order is created with the possibility of later payment.

Or is it possible to give the orderID in advance to the operator and go to his site to pay for the order?

I have tracked how it is in the case of paypal payment and there the orderID is created only after returning from paypal with information on the correct payment of the order.

The underlying problem is when you import

shop.models.defaults.bases.BaseProduct

or the other base models in your project. It will also import shop/models/init.py if you then have the SHOP_x_MODEL set to a Model you later define in this same file, you will get a circular import. Or if you use the other solutions so far, django-SHOP will try and import the custom model before it has been instantiated. The only way to fix this is to move anything the project needs to build a custom module outside shop.models. At the moment that is base models and managers. This needs to be done in combination with the previous solution, which I have included here.

There are a few fixes that can be applied to make this backwards compatible. Are you maintaining backwards compatibility before 1.0?

Tests are on their way. But right now it is an unusually sunny day for this time of year :)

Signed-off-by: Simon Luijk [email protected]

This fixes the circular importation problem discussed here:

https://groups.google.com/group/django-shop/browse_thread/thread/3738b2cd8303db3c

and here:

https://groups.google.com/group/django-shop/browse_thread/thread/3936063131aec679

Regards,

Eduardo

My shop needs to add some products to cart. Look to screen:

I take screen from real working shop, which sales wholesale products, so there are some input fields under corresponding size label. At this moment I can add one product only. You can test on page http://xn--i1afgbfs.xn--p1ai/shop/tops/testovyj-produkt

I placed two buttons. One of them is standart behavior (product-add2cart.html), which works very well. Second button is my trying - I cannot realize functionality of adding of some product. Unfortunatelly, I don't know how do it with angular. My tryings fails.

Could you help me?

And I think that django-shop needs more complex examples. I ready to add cloth example to django-shop as PR. Although I haven't cool programmer knowledge for it, but I want to help development of django-shop.

The docs quote:

The savvy reader may have noticed that in email_auth.models.User, the email field is not declared as unique. This by the way causes Django to complain during startup with:

However, I see that this is not a warning, it is an error:

$./manage.py makemigrations
SystemCheckError: System check identified some issues:

ERRORS:
email_auth.User: (auth.E003) 'User.email' must be unique because it is named as the 'USERNAME_FIELD'.

settings.py

AUTH_USER_MODEL = 'email_auth.User'
HOP_GUEST_IS_ACTIVE_USER = True
SILENCED_SYSTEM_CHECKS = ['auth.W004']

Shall I make it unique or did I miss a setting?

I try to make it with django-hvad, but is going very dificult because of inheritance on PolymorphicModel, my question is what should we use for model translations in django-shop?

python -m pipenv install

File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\resolver.py", line 845, in <module> main() File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\resolver.py", line 831, in main _main( File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\resolver.py", line 811, in _main resolve_packages( File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\resolver.py", line 759, in resolve_packages results, resolver = resolve( File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\resolver.py", line 738, in resolve return resolve_deps( File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\utils\resolver.py", line 1100, in resolve_deps results, hashes, markers_lookup, resolver, skipped = actually_resolve_deps( File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\utils\resolver.py", line 899, in actually_resolve_deps resolver.resolve() File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\utils\resolver.py", line 685, in resolve results = resolver.resolve(self.constraints, check_supported_wheels=False) File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\resolution\resolvelib\resolver.py", line 92, in resolve result = self._result = resolver.resolve( File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_vendor\resolvelib\resolvers.py", line 481, in resolve state = resolution.resolve(requirements, max_rounds=max_rounds) File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_vendor\resolvelib\resolvers.py", line 373, in resolve failure_causes = self._attempt_to_pin_criterion(name) File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_vendor\resolvelib\resolvers.py", line 211, in _attempt_to_pin_criterion for candidate in criterion.candidates: File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\resolution\resolvelib\found_candidates.py", line 143, in <genexpr> return (c for c in iterator if id(c) not in self._incompatible_ids) File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\resolution\resolvelib\found_candidates.py", line 47, in _iter_built candidate = func() File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\resolution\resolvelib\factory.py", line 206, in _make_candidate_from_link self._link_candidate_cache[link] = LinkCandidate( File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\resolution\resolvelib\candidates.py", line 301, in __init__ super().__init__( File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\resolution\resolvelib\candidates.py", line 163, in __init__ self.dist = self._prepare() File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\resolution\resolvelib\candidates.py", line 232, in _prepare dist = self._prepare_distribution() File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\resolution\resolvelib\candidates.py", line 312, in _prepare_distribution return preparer.prepare_linked_requirement(self._ireq, parallel_builds=True) File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\operations\prepare.py", line 491, in prepare_linked_requirement return self._prepare_linked_requirement(req, parallel_builds) File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\operations\prepare.py", line 536, in _prepare_linked_requirement local_file = unpack_url( File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\operations\prepare.py", line 176, in unpack_url unpack_file(file.path, location, file.content_type) File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\utils\unpacking.py", line 246, in unpack_file untar_file(filename, location) File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\utils\unpacking.py", line 188, in untar_file ensure_dir(path) File "C:\Users\xxx\AppData\Roaming\Python\Python38\site-packages\pipenv\patched\pip\_internal\utils\misc.py", line 105, in ensure_dir os.makedirs(path) File "C:\Users\xxx\AppData\Local\Programs\Python\Python39\lib\os.py", line 225, in makedirs mkdir(name, mode) FileNotFoundError: [WinError 206] The file name or its extension is too long: 'C:\\Users\\xxx\\AppData\\Local\\Temp\\pip-temp-2cu_5tkh\\django-rest-auth_ca48644e708044e6ac8b0f892d1498d2\\rest_auth/rest_auth/rest_auth/rest_auth/rest_auth/rest_auth/rest_auth/rest_auth/rest_auth/rest_auth/rest_auth/rest_auth/rest_auth/rest_auth/rest_auth/'

When doing a basic install, as indicated in the tutorial and running pipenv run ./manage.py initialize_shop_demo, I get the following error.

(base) ➜  my-shop  pipenv run ./manage.py initialize_shop_demo
/home/user/.local/share/virtualenvs/my-shop-mW1dO9i8/lib/python3.7/site-packages/shop/apps.py:32: UserWarning: 
Your caching backend does not support invalidation by key pattern.
Please use `django-redis-cache`, or wait until the product's HTML
snippet cache expires by itself.
  warnings.warn("\n"
SystemCheckError: System check identified some issues:

ERRORS:
<class 'filer.admin.folderadmin.FolderAdmin'>: (admin.E039) An admin for model "User" has to be registered to be referenced by FolderAdmin.autocomplete_fields.
<class 'filer.admin.permissionadmin.PermissionAdmin'>: (admin.E039) An admin for model "User" has to be registered to be referenced by PermissionAdmin.autocomplete_fields.

Hi

i just looking for django eshop, and this project look promisely is it still active? i am asking because of dependency django<3.1 from django 3.x only 3.2 is still alive and also it is LTS are you planning to add support for django 3.2?

or is there any fork which continues in this project?

thanks for reply

Feature Request: REST API to delete all items in a cart (or delete the cart itself) e.g.

DELETE /shop/api/cart

Reason: There is currently no way to do this other than running a loop over each cart item and setting its quantity to 0, which is more of a hack and puts load on the server + is not stable enough.

I'm looking forward to trying django-SHOP. in following the tutorial here: https://django-shop.readthedocs.io/en/latest/tutorial/intro.html

I cannot get the following step to run when installing django-SHOP on Ubuntu 18.04: pipenv install --sequential or another version suggested in another ticket: pipenv install --sequential --skip-lock

The traceback I get is:

Traceback (most recent call last):
  File "/home/rob/.local/bin/pipenv", line 7, in <module>
    from pipenv import cli
  File "/home/rob/.local/lib/python2.7/site-packages/pipenv/__init__.py", line 22, in <module>
    from pipenv.vendor.vistir.compat import ResourceWarning, fs_str
  File "/home/rob/.local/lib/python2.7/site-packages/pipenv/vendor/vistir/__init__.py", line 4, in <module>
    from .compat import (
  File "/home/rob/.local/lib/python2.7/site-packages/pipenv/vendor/vistir/compat.py", line 13, in <module>
    from .backports.tempfile import NamedTemporaryFile as _NamedTemporaryFile
  File "/home/rob/.local/lib/python2.7/site-packages/pipenv/vendor/vistir/backports/__init__.py", line 6, in <module>
    from .tempfile import NamedTemporaryFile
  File "/home/rob/.local/lib/python2.7/site-packages/pipenv/vendor/vistir/backports/tempfile.py", line 15, in <module>
    from backports.weakref import finalize
ImportError: No module named weakref

note that is trying to use python 2.7. So I did the following: pipenv install --python 3.9 --sequential

and

pipenv install --python=/usr/local/bin/Python3.9.9 --sequential

and

pipenv install --python '/usr/local/bin/Python3.9.9' --sequential

It is still trying to use python 2.7 and gives the same error.

I have setup virtual environments with Python 3.6, which failed because some dependencies needed >3.7. I tried python 3.8, 3.10.0, and 3.9.9. I tried pip install and pip3 install. Tried installing Python to /usr/bin and usr/local/bin. I have updated pip to the latest version, and manually installed backports.weakref using pip and pip3.

I have tried with and without optimizations: sudo ./configure --enable-optimizations

when I open a python 3.9.9 prompt and import weakrefs, it is there. When I pip install, it say requirement is already satisfied. When I run pipenv install --sequential I get ImportError: No module named weakref and referencing 2.7 instead of 3.9.9. I am out of ideas to try.