#25541: Loading JSON fixture error location reporting
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Reporter: awol | Owner: nobody
Type: Cleanup/optimization | Status: new
Component: Core (Serialization) | Version: 1.8
Severity: Normal | Keywords: JSON fixture error
Triage Stage: Unreviewed | Has patch: 0
Easy pickings: 0 | UI/UX: 0
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We load a lot of data from fixtures that we generate from a CSV based data
source. The transformation from CSV to JSON for the fixture is mostly fine
but from time to time as the model changes or someone adds a different
instance of the CSV data set, the fixture that gets created will fail to
load for one reason or another. It is very hard/impossible to know which
"line" in the fixture caused the exception that prevents the whole fixture
from loading.
I am not sure what the most appropriate Django like fix for this issue is,
however I have found that the following change is very successful at
helping me find the appropriate place in the fixture JSON file and would
appreciate if something along these lines would be available in the
project.
{{{
django/core/serializers/json.py 2015-10-11 22:30:32.590127937 +1100
***************
*** 82,87 ****
--- 82,88 ----
raise
except Exception as e:
# Map to deserializer error
+ e.message += " Last success '{}:
{}'.".format(obj.object.__class__.__name__, obj.object)
six.reraise(DeserializationError, DeserializationError(e),
sys.exc_info()[2])
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/25541>
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