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Code Issues 32 Releases Wiki Activity

Fixed #6785 -- Made QuerySet.get() fetch a limited number of rows.

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Thanks Patryk Zawadzki.
This commit is contained in:
Tim Graham
2013-07-02 11:25:01 -04:00
parent 181f63c22d
commit da79ccca1d
2 changed files with 33 additions and 3 deletions
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12
django/db/models/query.py
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@@ -19,6 +19,10 @@ from django.utils.functional import partition
from django.utils import six
from django.utils import timezone
# The maximum number (one less than the max to be precise) of results to fetch
# in a get() query
MAX_GET_RESULTS = 20
# The maximum number of items to display in a QuerySet.__repr__
REPR_OUTPUT_SIZE = 20
@@ -297,6 +301,7 @@ class QuerySet(object):
clone = self.filter(*args, **kwargs)
if self.query.can_filter():
clone = clone.order_by()
clone = clone[:MAX_GET_RESULTS + 1]
num = len(clone)
if num == 1:
return clone._result_cache[0]
@@ -305,8 +310,11 @@ class QuerySet(object):
"%s matching query does not exist." %
self.model._meta.object_name)
raise self.model.MultipleObjectsReturned(
"get() returned more than one %s -- it returned %s!" %
(self.model._meta.object_name, num))
"get() returned more than one %s -- it returned %s!" % (
self.model._meta.object_name,
num if num <= MAX_GET_RESULTS else 'more than %s' % MAX_GET_RESULTS
)
)
def create(self, **kwargs):
"""