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fix handling get_table_description in Django 4.1 as well as in DB engines other than sqlite3

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Petr Dlouhý 2022-09-21 16:47:06 +02:00
parent 41d00ff78a
commit b66777ef70
1 changed files with 5 additions and 2 deletions
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7
categories/migration.py
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@ -1,6 +1,6 @@
"""Adds and removes category relations on the database."""
from django.apps import apps
from django.db import connection, transaction
from django.db import DatabaseError, connection, transaction
from django.db.utils import ProgrammingError
@ -25,7 +25,10 @@ def field_exists(app_name, model_name, field_name):
field = model._meta.get_field(field_name)
if hasattr(field, "m2m_db_table"):
m2m_table_name = field.m2m_db_table()
m2m_field_info = connection.introspection.get_table_description(cursor, m2m_table_name)
try:
m2m_field_info = connection.introspection.get_table_description(cursor, m2m_table_name)
except DatabaseError: # Django >= 4.1 throws DatabaseError
m2m_field_info = []
if m2m_field_info:
return True