May be you can reproduce this bug on more simple case (without custom
field )...
I installed django yesterday with command
pip install git+https://github.com/django/django@stable/1.7.x
so it's latest Django 1.7.dev...
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Ticket URL: <https://code.djangoproject.com/ticket/22892>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
* status: new => closed
* needs_better_patch: => 0
* resolution: => invalid
* needs_tests: => 0
* needs_docs: => 0
Comment:
This is by design. There is
[https://docs.djangoproject.com/en/dev/topics/migrations/#serializing-
values some documentation] about it already and #22351 suggests to enhance
it.
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Ticket URL: <https://code.djangoproject.com/ticket/22892#comment:1>