#32268: ProgrammingError: column doesnt exist when adding new field or removing
a
field after makemigrations or migrate command
-------------------------------------+-------------------------------------
Reporter: gvm2121 | Owner: nobody
Type: Bug | Status: new
Component: Migrations | Version: 2.2
Severity: Normal | Resolution:
Keywords: migrations, | Triage Stage:
makemigrations,ProgrammingError | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Description changed by gvm2121:
Old description:
> This issues raises when you want to add or delete a field from a model
> and that model is used in a form before. We have here the egg-chicken
> problem. makemigrations parse the form (i do not why) and he detect
> changes on those fields and raise the error. (Bold fonts):
> I fixed that issue commenting or replacing all the lines with
> bases.objects.all() (the compromised model) by anything or an empty
> string on the form. After that i ran makemigrations again, migrate, re-
> composed fake lines on the forms and that was right.
> I think this issue could be on migrations documentation or be fixed. Also
> didnt found solutions on Django 3.
> Thanks very much.
>
> return _bootstrap._gcd_import(name[level:], package, level)
> File "<frozen importlib._bootstrap>", line 994, in _gcd_import
> File "<frozen importlib._bootstrap>", line 971, in _find_and_load
> File "<frozen importlib._bootstrap>", line 955, in
> _find_and_load_unlocked
> File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
> File "<frozen importlib._bootstrap_external>", line 678, in exec_module
> File "<frozen importlib._bootstrap>", line 219, in
> _call_with_frames_removed
> File "/home/gvera/Fynsa/fynsa_src/fynsa/BASES/admin.py", line 3, in
> <module>
> '''from .formularios_bases import f_facturas_bases'''
> '''File "/home/gvera/Fynsa/fynsa_src/fynsa/BASES/formularios_bases.py",
> line 27, in <module>'''
> ''' class f_fechas_comite(forms.Form):'''
> '''File "/home/gvera/Fynsa/fynsa_src/fynsa/BASES/formularios_bases.py",
> line 29, in f_fechas_comite'''
> '''fecha_final = forms.DateField(widget=forms.DateInput(attrs={'class
> ':'form-control mx-2','type':'date'}),label='fecha final', required=True,
> initial=bases.objects.latest('fecha'))'''
> File "/home/gvera/Fynsa/fynsa_env/lib/python3.6/site-
> packages/django/db/models/manager.py", line 82, in manager_method
> return getattr(self.get_queryset(), name)(*args, **kwargs)
> File "/home/gvera/Fynsa/fynsa_env/lib/python3.6/site-
> packages/django/db/models/query.py", line 649, in latest
New description:
This issues raises when you want to add or delete a field from a model and
that model is used in a form before. We have here the egg-chicken problem.
makemigrations parse the form (i do not why) and he detect changes on
those fields and raise the error. (Bold fonts):
I fixed that issue commenting or replacing all the lines with
bases.objects.all() (the compromised model) by anything or an empty string
on the form. After that i ran makemigrations again, migrate, re-composed
fake lines on the forms and that was right.
I think this issue could be on migrations documentation or be fixed. Also
didnt found solutions on Django 3.
Thanks very much.
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 994, in _gcd_import
File "<frozen importlib._bootstrap>", line 971, in _find_and_load
File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 678, in exec_module
File "<frozen importlib._bootstrap>", line 219, in
_call_with_frames_removed
File "/home/gvera/Fynsa/fynsa_src/fynsa/BASES/admin.py", line 3, in
<module>
'''from .formularios_bases import f_facturas_bases'''
'''File "/home/gvera/Fynsa/fynsa_src/fynsa/BASES/formularios_bases.py",
line 27, in <module>'''
''' class f_fechas_comite(forms.Form):'''
'''File "/home/gvera/Fynsa/fynsa_src/fynsa/BASES/formularios_bases.py",
line 29, in f_fechas_comite'''
'''fecha_final = forms.DateField(widget=forms.DateInput(attrs={'class
':'form-control mx-2','type':'date'}),label='fecha final', required=True,
initial=bases.objects.latest('fecha'))'''
File "/home/gvera/Fynsa/fynsa_env/lib/python3.6/site-
packages/django/db/models/manager.py", line 82, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File /home/gvera/Fynsa/fynsa_env/lib/python3.6/site-
packages/django/db/models/query.py, line 649, in latest
--
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Ticket URL: <https://code.djangoproject.com/ticket/32268#comment:1>
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