Hi,

this is very strange of course. I doubt it has anything to do with MySQL,
because even if MySQL had done something wrong and had returned a long in place
of a string, the Django ORM should have caught that and raised an error earlier.
So the problem must be in Django. (But of course with such a strange problem
anything is possible).

I'd first try to clean up the Python compiled files (remove them), remove and
recreate the virtualenv, and restart Django. Also check the disk space in the
machine.

Regards,

Antonis

Antonis Christofides
http://djangodeployment.com

On 2017-10-07 11:40, Web Architect wrote:
> Hi Antonis,
>
> Thanks for your response:
>
> Following is the model:
>
> from treebeard.mp_tree import MP_Node
>
> @python_2_unicode_compatible
> [docs]
> <http://django-oscar.readthedocs.io/en/releases-1.1/ref/apps/catalogue.html#oscar.apps.catalogue.abstract_models.AbstractCategory>class
> AbstractCategory(MP_Node): """ A product category. Merely used for
> navigational purposes; has no effects on business logic. Uses
> django-treebeard. """ name = models.CharField(_('Name'), max_length=255,
> db_index=True) description = models.TextField(_('Description'), blank=True)
> image = models.ImageField(_('Image'), upload_to='categories', blank=True,
> null=True, max_length=255) slug = models.SlugField(_('Slug'), max_length=255,
> db_index=True)
> Following is the queryset:
>
>  >>>cat=category.objects.get(pk=11)
>
> >>> cat
>
> Traceback (most recent call last):
>
>   File "<console>", line 1, in <module>
>
>   File
> "/home/pinakee/oscar_v1/lib/python2.7/site-packages/django/db/models/base.py",
> line 496, in __repr__
>
>     u = six.text_type(self)
>
>   File
> "/home/pinakee/oscar_v1/lib/python2.7/site-packages/oscar/apps/catalogue/abstract_models.py",
> line 102, in __str__
>
>     return self.full_name
>
>   File "/home/waltzz/jivaana/jivaana_custom/catalogue/models.py", line 61, in
> full_name
>
>     cache_key = self.slug + '_full_name'
>
> TypeError: unsupported operand type(s) for +: 'long' and 'str'
>
> >>> cat.slug
>
> 3L
>
> The reason above exception is coming because cat.slug is long and not string
> as it is supposed to be.
> MySQL Version:
>
> mysql -V
>
> mysql  Ver 14.14 Distrib 5.5.48, for Linux (x86_64) using readline 5.1
>
> OS:
>
> 2.6.32-504.30.3.el6.x86_64
>
> Thanks.
>
> On Friday, October 6, 2017 at 11:49:04 PM UTC+5:30, Antonis Christofides 
> wrote:
>
>     Hi,
>
>     could you show the code that defines the slugfield, the queryset that is
>     returning the wrong value, full error message and traceback (if
>     available), and the version of your OS and RDBMS?
>
>     It doesn't matter if the problem is more general; let's focus on one
>     specific manifestation of it.
>
>     Regards,
>
>     Antonis
>
>     On October 6, 2017 8:16:20 PM GMT+03:00, Web Architect <pina...@gmail.com
>     <javascript:>> wrote:
>
>         Hi,
>
>         We have running an ecommerce site using Django 1.8.13. It has been
>         running fine for a year. But suddenly the django querysets are
>         returning corrupted values. I am completely clueless why this is
>         happening. Like a model field is of type SlugField but queryset is
>         returning long.
>         Would really appreciate if anyone could throw some light on how to fix
>         the above issue. When I check the values in MySQL DB using PhpMyAdmin
>         and everything is fine.
>         Thanks,
>         Pinakee
>
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