#28073: RemoveField.state_forwards() crashes with AttributeError: 'NoneType'
object
has no attribute 'is_relation'
---------------------------------+------------------------------------
Reporter: Logan Gunthorpe | Owner: nobody
Type: Bug | Status: new
Component: Migrations | Version: 1.11
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by yuanxu):
I had the same issue. In my case, I agree with testvinder. In my case,
I've delete some fields in db, and have RemoveField in migrations. In
1.10.7, It works fun and crash in 2.0.7.
I just modify the fields.py in line 145 with:
{{{
delay = old_field is None or not old_field.is_relation
}}}
It works! but I don't know if is there are other issues.
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Ticket URL: <https://code.djangoproject.com/ticket/28073#comment:16>
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