south.db.sqlite3.DatabaseOperations._fields not updated after an add_column

[olivier.mansion@…]

When many migrations are performed by the migrate command, in some cases, column added with add_column can disappear.

Here is an example of migration :

First migration:
A delete_column on table T (it loads DatabaseOperations?._fields)

Second migration :
An add_column on table T (at the very end, DatabaseOperations?._fields is not updated with this new column as _populate_current_structure not called)

Third migration :
An delete_column on table T (at the very end, table is rebuilt with _fields data => field added in second migration disappears)

I've linked a project that reproduce the issue:

• trash the database,
• syncdb,
• migrate,

=> OperationalError?: table app_test has no column named name3

[andrew]

Duplicate of #316 - this is fixed in trunk.