我正在尝试从我的数据库中获取一些数据。这在我的本地计算机上运行良好。但是当部署在Google App Engine上时，它会给我一个错误
InterfaceError at / report / unit / D8500 / WV_herverkoop / 2013/0/10 / 未知类型＆lt; class'minit.Decimal'＆gt;对于arg 10
完整追溯
InterfaceError at /report/unit/D8500/WV_herverkoop/2013/0/10/
unknown type <class 'decimal.Decimal'> for arg 10
Request Method: GET
Request URL: http://dw-services.appspot.com/report/unit/D8500/WV_herverkoop/2013/0/10/
Django Version: 1.4.3
Exception Type: InterfaceError
Exception Value:
unknown type <class 'decimal.Decimal'> for arg 10
Exception Location: /python27_runtime/python27_lib/versions/1/google/storage/speckle/python/api/rdbms.py in _AddBindVariablesToRequest, line 427
Python Executable: /python27_runtime/python27_dist/python
Python Version: 2.7.3
Python Path:
['/base/data/home/apps/s~dw-services/2.365787501016750085',
'/python27_runtime/python27_dist/lib/python27.zip',
'/python27_runtime/python27_dist/lib/python2.7',
'/python27_runtime/python27_dist/lib/python2.7/plat-linux2',
'/python27_runtime/python27_dist/lib/python2.7/lib-tk',
'/python27_runtime/python27_dist/lib/python2.7/lib-old',
'/python27_runtime/python27_dist/lib/python2.7/lib-dynload',
'/python27_runtime/python27_dist/lib/python2.7/site-packages',
'/python27_runtime/python27_lib/versions/1',
'/python27_runtime/python27_lib/versions/third_party/django-1.4',
'/python27_runtime/python27_lib/versions/third_party/webapp2-2.3',
'/python27_runtime/python27_lib/versions/third_party/webob-1.1.1',
'/python27_runtime/python27_lib/versions/third_party/yaml-3.10',
'/base/data/home/apps/s~dw-services/2.365787501016750085/..']
Server time: don, 7 Mrt 2013 13:58:28 +0000
Traceback Switch to copy-and-paste view
/python27_runtime/python27_lib/versions/third_party/django-1.4/django/core/handlers/base.py in get_response
response = callback(request, *callback_args, **callback_kwargs) ...
▶ Local vars
/python27_runtime/python27_lib/versions/third_party/django-1.4/django/contrib/auth/decorators.py in _wrapped_view
return view_func(request, *args, **kwargs) ...
▶ Local vars
/base/data/home/apps/s~dw-services/2.365787501016750085/dewaelereports/views/reportView.py in showReportPerOffice
position = 0 # position in which we'll insert the region
region_commission = 0 # commission earned in a region
region_count = 0 # transactions in a region
region_avg = 0 # average in a region
counter = 0 # detect when it's the first zip in the region
for zip in region.zips.all():
results = zip.get_total_sales(office, start_week, end_week, year, unit_type) ...
total_count += results[0][0]
total_commission += results[0][1]
region_count += results[0][0]
region_commission += results[0][1]
zipList.append((zip.zip_name, results[0], results[1]))
if counter == 0:
▶ Local vars
/base/data/home/apps/s~dw-services/2.365787501016750085/dewaelereports/models.py in get_total_sales
return [calculate_results(zip_transactions, unit), zip_transactions] ...
▼ Local vars
Variable Value
office
<Office: D8500>
transactions
[<Transaction: k08071>, <Transaction: T8500-08157C>, <Transaction: D8500-11451>, <Transaction: D8500-12042H>, <Transaction: D8500-12143B>, <Transaction: T8500-09259>, <Transaction: T8500-10244a>, <Transaction: T8500-10277>, <Transaction: T8500-10277>, <Transaction: D8500-10345-A12>, <Transaction: T8500-10420>, <Transaction: T8500-10496>, <Transaction: T8500-11040H>, <Transaction: D8500-11048>, <Transaction: D8500-11650H>, <Transaction: D8500-11255B>, <Transaction: T8500-11325>, <Transaction: D8500-11343H>, <Transaction: T8500-11497>, <Transaction: D8500-11508B>, '...(remaining elements truncated)...']
start_week
u'0'
self
<Zip: 8500 - Kortrijk>
zip_transactions
[<Office_per_transaction: 2460>, <Office_per_transaction: 2413>, <Office_per_transaction: 775>, <Office_per_transaction: 2477>, <Office_per_transaction: 2414>, <Office_per_transaction: 2485>]
unit
<Unit_type: WV herverkoop>
year
u'2013'
office_transactions
[<Office_per_transaction: 196>, <Office_per_transaction: 1111>, <Office_per_transaction: 2460>, <Office_per_transaction: 2433>, <Office_per_transaction: 1105>, <Office_per_transaction: 1135>, <Office_per_transaction: 2413>, <Office_per_transaction: 775>, <Office_per_transaction: 3176>, <Office_per_transaction: 3444>, <Office_per_transaction: 2477>, <Office_per_transaction: 2414>, <Office_per_transaction: 1094>, <Office_per_transaction: 2485>]
end_week
u'10'
/base/data/home/apps/s~dw-services/2.365787501016750085/dewaelereports/models.py in calculate_results
if len(transaction_query) >= 1:
sum = 0
for tr in transaction_query:
sum += tr.transaction.commission_fix_out * (tr.office_percentage / 100)
if unit:
if unit.min_quantity:
count_transactions = len(transaction_query.filter(transaction__transaction_price_out__gt=str(unit.min_quantity))) ...
if not unit or not unit.min_quantity:
count_transactions = len(transaction_query)
avg = sum / len(transaction_query)
▼ Local vars
Variable Value
transaction_query
[<Office_per_transaction: 2460>, <Office_per_transaction: 2413>, <Office_per_transaction: 775>, <Office_per_transaction: 2477>, <Office_per_transaction: 2414>, <Office_per_transaction: 2485>]
count_transactions
0
sum
Decimal('61313.0300')
tr
<Office_per_transaction: 2485>
avg
0
unit
<Unit_type: WV herverkoop>
/python27_runtime/python27_lib/versions/third_party/django-1.4/django/db/models/query.py in __len__
self._result_cache = list(self.iterator()) ...
▶ Local vars
/python27_runtime/python27_lib/versions/third_party/django-1.4/django/db/models/query.py in iterator
for row in compiler.results_iter(): ...
▶ Local vars
/python27_runtime/python27_lib/versions/third_party/django-1.4/django/db/models/sql/compiler.py in results_iter
for rows in self.execute_sql(MULTI): ...
▶ Local vars
/python27_runtime/python27_lib/versions/third_party/django-1.4/django/db/models/sql/compiler.py in execute_sql
cursor.execute(sql, params) ...
▶ Local vars
/python27_runtime/python27_lib/versions/third_party/django-1.4/django/db/backends/util.py in execute
return self.cursor.execute(sql, params) ...
▶ Local vars
/python27_runtime/python27_lib/versions/third_party/django-1.4/django/db/backends/mysql/base.py in execute
return self.cursor.execute(query, args) ...
▶ Local vars
/python27_runtime/python27_lib/versions/1/google/storage/speckle/python/api/rdbms.py in execute
request = sql_pb2.ExecRequest()
request.options.include_generated_keys = True
if args is not None:
if not hasattr(args, '__iter__'):
args = [args]
self._AddBindVariablesToRequest(
statement, args, request.bind_variable.add) ...
request.statement = _ConvertFormatToQmark(statement, args)
self._DoExec(request)
self._executed = request.statement
def executemany(self, statement, seq_of_args):
"""Prepares and executes a database operation for given parameter sequences.
▼ Local vars
Variable Value
self
<google.storage.speckle.python.api.rdbms.Cursor object at 0xfc8c0b10>
args
(1,
0,
10,
'2013-01-01 00:00:00',
'2013-12-31 23:59:59.99',
'R',
'S',
13,
2,
1459,
Decimal('75000'))
request
<google.storage.speckle.proto.sql_pb2.ExecRequest object at 0xfc8a6458>
statement
'SELECT `dewaelereports_office_per_transaction`.`id`, `dewaelereports_office_per_transaction`.`office_id`, `dewaelereports_office_per_transaction`.`transaction_id`, `dewaelereports_office_per_transaction`.`office_percentage` FROM `dewaelereports_office_per_transaction` INNER JOIN `dewaelereports_transaction` ON (`dewaelereports_office_per_transaction`.`transaction_id` = `dewaelereports_transaction`.`id`) WHERE (`dewaelereports_office_per_transaction`.`office_id` = %s AND `dewaelereports_transaction`.`transaction_end_week` BETWEEN %s and %s AND `dewaelereports_transaction`.`transaction_end_date` BETWEEN %s and %s AND `dewaelereports_transaction`.`transaction_end_status` IN (%s, %s) AND `dewaelereports_office_per_transaction`.`transaction_id` IN (SELECT U0.`transaction_id` FROM `dewaelereports_transaction_status` U0 WHERE U0.`status` = %s ) AND `dewaelereports_transaction`.`unit_type_id` = %s AND `dewaelereports_office_per_transaction`.`transaction_id` IN (SELECT U0.`id` FROM `dewaelereports_transaction` U0 INNER JOIN `dewaelereports_property` U1 ON (U0.`premises_id` = U1.`id`) WHERE U1.`property_zip_id` = %s ) AND `dewaelereports_transaction`.`transaction_price_out` > %s )'
/python27_runtime/python27_lib/versions/1/google/storage/speckle/python/api/rdbms.py in _AddBindVariablesToRequest
raise InterfaceError('unknown type %s for arg %d' % (type(arg), i)) ...
▼ Local vars
Variable Value
direction
1
i
10
bind_variable_factory
<bound method RepeatedCompositeFieldContainer.add of [<google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c14c8>, <google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c17a0>, <google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c1960>, <google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c1998>, <google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c1f10>, <google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c1dc0>, <google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c17d8>, <google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c1c70>, <google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c15a8>, <google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c1d50>, <google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c1ed8>]>
args
(1,
0,
10,
'2013-01-01 00:00:00',
'2013-12-31 23:59:59.99',
'R',
'S',
13,
2,
1459,
Decimal('75000'))
bv
<google.storage.speckle.proto.client_pb2.BindVariableProto object at 0xfc8c1ed8>
statement
'SELECT `dewaelereports_office_per_transaction`.`id`, `dewaelereports_office_per_transaction`.`office_id`, `dewaelereports_office_per_transaction`.`transaction_id`, `dewaelereports_office_per_transaction`.`office_percentage` FROM `dewaelereports_office_per_transaction` INNER JOIN `dewaelereports_transaction` ON (`dewaelereports_office_per_transaction`.`transaction_id` = `dewaelereports_transaction`.`id`) WHERE (`dewaelereports_office_per_transaction`.`office_id` = %s AND `dewaelereports_transaction`.`transaction_end_week` BETWEEN %s and %s AND `dewaelereports_transaction`.`transaction_end_date` BETWEEN %s and %s AND `dewaelereports_transaction`.`transaction_end_status` IN (%s, %s) AND `dewaelereports_office_per_transaction`.`transaction_id` IN (SELECT U0.`transaction_id` FROM `dewaelereports_transaction_status` U0 WHERE U0.`status` = %s ) AND `dewaelereports_transaction`.`unit_type_id` = %s AND `dewaelereports_office_per_transaction`.`transaction_id` IN (SELECT U0.`id` FROM `dewaelereports_transaction` U0 INNER JOIN `dewaelereports_property` U1 ON (U0.`premises_id` = U1.`id`) WHERE U1.`property_zip_id` = %s ) AND `dewaelereports_transaction`.`transaction_price_out` > %s )'
arg
Decimal('75000')
self
<google.storage.speckle.python.api.rdbms.Cursor object at 0xfc8c0b10>
显然它失败了，因为它说unit.min_quantity是小数。但我没有在模型中将其声明为十进制：
class Unit_type(models.Model):
unit_name = models.CharField(max_length=145)
department = models.ForeignKey(Department)
min_quantity = models.IntegerField(blank=True, null=True)
class Meta:
verbose_name = 'unit type'
def __unicode__(self):
return self.unit_name
当我填写声明并在Google Cloud Sql中手动执行时，它确实有效。有人可以帮我解决这个讨厌的问题吗？
由于
答案 0 :(得分：0)
Google Cloud SQL DBAPI目前不支持decimal.Decimal类型，但您可以将其修补为：
import decimal
from google.storage.speckle.proto import jdbc_type
from google.storage.speckle.python.api import converters
from google.storage.speckle.python.api import rdbms
from google.storage.speckle.python.api import rdbms_googleapi
rdbms._PYTHON_TYPE_TO_JDBC_TYPE[decimal.Decimal] = jdbc_type.DECIMAL
converters.conversions[decimal.Decimal] = converters.Any2Str
converters.conversions[jdbc_type.DECIMAL] = decimal.Decimal
记录了一个问题here，Google代表提供了上面的补丁，并表示他们正在修复此问题。