我一直盯着这一点，但却看不到问题。基本上我有很多观点，并根据不同的日期组合进行过滤，例如今年，或本月甚至今天等等。我在这个月过滤了一个观点，过滤器。
对于当前年度过滤器，这有效：
queryset = mymodel.objects.filter(mydate__year=date.today().year).order_by('field')
但是，在当月尝试这种方法并不是：
queryset = mymodel.objects.filter(mydate__month=date.today().month).order_by('field')
抛出异常，基本上概括为：
TypeError at /core/tcCoreVendor/
not all arguments converted during string formatting
我可以通过以下方式解决这个问题：
month = date.today().month
where = "%(month)s = MONTH(mtime)" % {'month': month}
queryset = mymodel.objects.extra(where=[where])
但这看起来很疯狂！
非常感谢任何帮助或建议！
这是模特：
class tcCore_vendor(models.Model):
'''
tcCore_vendor
Model that represents the vendors of hardware, software and applications etc.
'''
uid = models.CharField(db_column='uid', max_length=50, unique=True, primary_key=True, editable=False)
name = models.CharField(db_column='name', max_length=50, blank=False, null=False)
address = models.TextField(db_column='address', blank=True, null=True)
contact = models.CharField(db_column='contactnumber', max_length=50, blank=True, null=True)
image = models.TextField(db_column='image', blank=True, null=True)
mtime = models.DateTimeField(auto_now=True)
def __str__(self):
return self.name
class Meta:
managed = False
app_label = 'tcCore'
db_table = 'tc_core_vendor'
ordering = ['name']
以下是观点：
class tcCore_vendor_viewset(viewsets.ModelViewSet):
"""
API for viewing and editing vendors.
"""
permission_classes = (permissions.IsAdminUser,)
serializer_class = tcCore.serializers.tcCore_vendor_serializer
search_fields = ('name', )
ordering_fields = ('name',)
def get_queryset(self):
""" Override the standard query set to provide some flexibility on the result set. """
view = self.request.query_params.get('view', None)
if view is not None:
if int(view) == 1: # Any date
queryset = tcCore.models.tcCore_vendor.objects.all().order_by('name')
elif int(view) == 2: # Today
queryset = tcCore.models.tcCore_vendor.objects.filter(mtime__date=date.today()).order_by('name')
elif int(view) == 3: # Past 7 days
queryset = tcCore.models.tcCore_vendor.objects.filter(mtime__range=[timezone.now() - timedelta(days=7), timezone.now()]).order_by('name')
elif int(view) == 4: # This month
queryset = tcCore.models.tcCore_vendor.objects.filter(mtime__month__lte=date.today().month).order_by('name')
elif int(view) == 5: # This year
queryset = tcCore.models.tcCore_vendor.objects.filter(mtime__year=date.today().year).order_by('name')
else: # No view provided
queryset = tcCore.models.tcCore_vendor.objects.all().order_by('name')
else: # No view provided
queryset = tcCore.models.tcCore_vendor.objects.all().order_by('name')
return queryset
def get_view_name(self):
name = "tcCoreVendor"
suffix = getattr(self, 'suffix', None)
if suffix:
name += ' ' + suffix
return name
这里有完整的痕迹：
TypeError at /core/tcCoreVendor/
not all arguments converted during string formatting
Request Method: GET
Request URL: http://127.0.0.1:8000/core/tcCoreVendor/?view=4
Django Version: 2.0.2
Python Executable: /Users/xxxxxxxxxxx/anaconda3/envs/company_name/bin/python
Python Version: 3.6.5
Python Path: ['/Users/xxxxxxxxxxx/Google Drive/GitHub/company_name', '/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python36.zip', '/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6', '/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/lib-dynload', '/Users/xxxxxxxxxxx/.local/lib/python3.6/site-packages', '/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages']
Server time: Fri, 18 May 2018 08:23:17 +0000
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'corsheaders',
'rest_framework',
'rest_framework.authtoken',
'django_filters',
'raven.contrib.django.raven_compat',
'tcCore.apps.tcCoreConfig']
Installed Middleware:
['raven.contrib.django.middleware.DjangoRestFrameworkCompatMiddleware',
'raven.contrib.django.middleware.SentryMiddleware',
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'corsheaders.middleware.CorsMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'company_name.tcMiddleware.middleware']
Traceback:
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/core/paginator.py" in count
85. return self.object_list.count()
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/query.py" in count
387. return self.query.get_count(using=self.db)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/query.py" in get_count
491. number = obj.get_aggregation(using, ['__count'])['__count']
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/query.py" in get_aggregation
476. result = compiler.execute_sql(SINGLE)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in execute_sql
1051. sql, params = self.as_sql()
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in as_sql
459. where, w_params = self.compile(self.where) if self.where is not None else ("", [])
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in compile
391. sql, params = node.as_sql(self, self.connection)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/where.py" in as_sql
80. sql, params = compiler.compile(child)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in compile
391. sql, params = node.as_sql(self, self.connection)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/lookups.py" in as_sql
160. lhs_sql, params = self.process_lhs(compiler, connection)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/lookups.py" in process_lhs
155. db_type, field_internal_type) % lhs_sql
During handling of the above exception (not all arguments converted during string formatting), another exception occurred:
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
35. response = get_response(request)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
128. response = self.process_exception_by_middleware(e, request)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
126. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/views/decorators/csrf.py" in wrapped_view
54. return view_func(*args, **kwargs)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/rest_framework/viewsets.py" in view
103. return self.dispatch(request, *args, **kwargs)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/rest_framework/views.py" in dispatch
483. response = self.handle_exception(exc)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/rest_framework/views.py" in handle_exception
443. self.raise_uncaught_exception(exc)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/rest_framework/views.py" in dispatch
480. response = handler(request, *args, **kwargs)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/rest_framework/mixins.py" in list
42. page = self.paginate_queryset(queryset)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/rest_framework/generics.py" in paginate_queryset
173. return self.paginator.paginate_queryset(queryset, self.request, view=self)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/rest_framework/pagination.py" in paginate_queryset
204. self.page = paginator.page(page_number)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/core/paginator.py" in page
65. number = self.validate_number(number)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/core/paginator.py" in validate_number
43. if number > self.num_pages:
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/utils/functional.py" in __get__
36. res = instance.__dict__[self.name] = self.func(instance)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/core/paginator.py" in num_pages
95. if self.count == 0 and not self.allow_empty_first_page:
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/utils/functional.py" in __get__
36. res = instance.__dict__[self.name] = self.func(instance)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/core/paginator.py" in count
90. return len(self.object_list)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/query.py" in __len__
254. self._fetch_all()
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/query.py" in _fetch_all
1179. self._result_cache = list(self._iterable_class(self))
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/query.py" in __iter__
53. results = compiler.execute_sql(chunked_fetch=self.chunked_fetch, chunk_size=self.chunk_size)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in execute_sql
1051. sql, params = self.as_sql()
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in as_sql
459. where, w_params = self.compile(self.where) if self.where is not None else ("", [])
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in compile
391. sql, params = node.as_sql(self, self.connection)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/where.py" in as_sql
80. sql, params = compiler.compile(child)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/sql/compiler.py" in compile
391. sql, params = node.as_sql(self, self.connection)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/lookups.py" in as_sql
160. lhs_sql, params = self.process_lhs(compiler, connection)
File "/Users/xxxxxxxxxxx/anaconda3/envs/company_name/lib/python3.6/site-packages/django/db/models/lookups.py" in process_lhs
155. db_type, field_internal_type) % lhs_sql