Fixed deprecated field.rel access

[pmaddi]

This handles the RemovedInDjango20Warning in the field.rel.to access.

[coveralls]

Coverage decreased (-0.3%) to 92.655% when pulling c54d623 on pmaddi:master into bce1d59 on chrisdev:master.

[chrisdev]

@pmaddi thanks for the PR but its failing in Python 2.6. I'm reluctant to remove support for 2.6 at this moment

[pmaddi]

@chrisdev I absolutely agree. Would you happen to have any insight as to why the tests are failing on Python 2.6?

I'm seeing that the pandas import is raising the error

  File "/home/travis/build/chrisdev/django-pandas/django_pandas/io.py", line 1, in <module>

    import pandas as pd

  File "/home/travis/virtualenv/python2.6.9/lib/python2.6/site-packages/pandas/__init__.py", line 22, in <module>

    from pandas.compat.numpy import *

  File "/home/travis/virtualenv/python2.6.9/lib/python2.6/site-packages/pandas/compat/__init__.py", line 334, in <module>

    from collections import OrderedDict, Counter

ImportError: cannot import name OrderedDict

However, I don't understand how this change would effect anything about this library's pandas compatibility.

[chrisdev]

@pmaddi I think the OrderedDict referenced in Pandas is not in Python 2.6.
The problem is with the version of Pandas that setup.py chooses to install since we are not pinning the exact version of Pandas to install ( >= instead of == ). So in the setup.py we have pandas >= 0.14.1 or in travis.yml pandas >= 12.0 I'm assuming that instead of 0.14.1 (which is was doing before for 2.6) it's now installing a more recent version of Pandas.
The best solution is to ensure that for the Python 2.6 travis, will install a Pandas version that does not require OrderedDict. I think this could be 0.14.1 but I don't want to put my head on a block about this

[pmaddi]

@chrisdev Ah, I see. I'll go ahead and close this then!