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POHow to modify dumpdata generated django json fixture prior to loading into database
 

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  1. POHow to modify dumpdata generated django json fixture prior to loading into database
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    <p>I am a relative django newbie. I have a json fixture for the django.contrib.auth.user objects from an existing database that I want to load into my test app. The specific field I want to modify are all the Datetime Fields that do not have UTC offsets built into them. I want to add these UTC offsets using a python script.</p> <p>I am using the django deserializer but am having no luck and get an error during the deserialization.</p> <pre><code> File "add_utc_offset_to_fixture.py", line 24, in &lt;module&gt; for obj in serializers.deserialize("json", json_fixture): File "/Users/hari/.virtualenvs/bsc2/lib/python2.7/site-packages/django/core/serializers/json.py", line 47, in Deserializer raise DeserializationError(e) django.core.serializers.base.DeserializationError: No module named Image </code></pre> <p>How do I get around this deserialization error, or alternatively how do I modify this fixtures before loading into the database.</p> <p>I looked into my fixtures and also into the json.py deserializer and do not understand why it needs a module called Image.</p> <p>My code</p> <pre><code># This program reads in a json fixture with naive Datetime field and converts it into a UTC aware Datetime field # For Documentation on this see https://docs.djangoproject.com/en/dev/topics/i18n/timezones/#time-zones-migration-guide import sys,os # Sets the django settings module dir_two_steps_up_from_me = os.path.join(os.path.split(os.path.dirname(os.path.abspath(__file__)))[-2]) print "Adding %s to sys.path" % dir_two_steps_up_from_me sys.path.append(dir_two_steps_up_from_me) from bsc2 import settings from django.core.management import setup_environ # Deprecated but still using setup_environ(settings) from django.core import serializers from django.contrib.auth.models import User json_fixture = None try: json_fixture = open(sys.argv[1],"rb") except IndexError,IOError: print "Please give json fixture" exit() for obj in serializers.deserialize("json", json_fixture): # Getting deserialization error when this executes print obj.first_name # TODO Code to change naive time in last_login to UTC time </code></pre>
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    1. PTQuestion
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    1. USharijay
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    1. CODouble check that you have PIL installed.
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      1. POHow to modify dumpdata generated django json fixture prior to loading into database
      1. USJeff Triplett
    2. COI installed PIL and then this error went away. But I wanted to find out why it requires the Image module. The deserialization is just loading User objects into the database. The Image module is only required at runtime
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      1. POHow to modify dumpdata generated django json fixture prior to loading into database
      1. USharijay
 

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