Well, upon digging further myself, I noticed that was an old foreign key in
my Pictures table referring to the non-existant auth_user table:
sql: "last_changed_user_id" integer NOT NULL REFERENCES "auth_user"
("id")
This was not referenced anymore in the model. So, I guess that in order to
use alembic properly I should not have manually deleted that table (in fact
I did that before starting to use alembic), but to remove both the table
and the foreign key in the model and then let alembic apply both changes to
the database in one go. Correct?
For reference purposes still find here the complete stack trace without
having the solution applied yet. Note again that I inserted some debug
statements here and there in the sqlalchemy/alembic code, so line numbers
may deviate.
Traceback (most recent call last):
File "virtualenv\Scripts\alembic-script.py", line 11, in <module>
load_entry_point('alembic==0.7.6', 'console_scripts', 'alembic')()
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\config.py", line 439, in main
CommandLine(prog=prog).main(argv=argv)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\config.py", line 433, in main
self.run_cmd(cfg, options)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\config.py", line 416, in run_cmd
**dict((k, getattr(options, k)) for k in kwarg)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\command.py", line 113, in revision
script.run_env()
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\script.py", line 390, in run_env
util.load_python_file(self.dir, 'env.py')
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\util.py", line 243, in load_python_file
module = load_module_py(module_id, path)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\compat.py", line 79, in load_module_py
mod = imp.load_source(module_id, path, fp)
File "alembic\env.py", line 99, in <module>
run_migrations_online()
File "alembic\env.py", line 92, in run_migrations_online
context.run_migrations()
File "<string>", line 7, in run_migrations
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\environment.py", line 738, in run_migrations
self.get_context().run_migrations(**kw)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\migration.py", line 300, in run_migrations
for step in self._migrations_fn(heads, self):
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\command.py", line 95, in retrieve_migrations
autogen._produce_migration_diffs(context, template_args, imports)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\autogenerate\api.py", line 154, in _produce_migration_diffs
autogen_context, object_filters, include_schemas)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\autogenerate\api.py", line 256, in _produce_net_changes
inspector, metadata, diffs, autogen_context)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\alembi
c\autogenerate\compare.py", line 84, in _compare_tables
inspector.reflecttable(t, None)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\sqlalc
hemy\engine\reflection.py", line 590, in reflecttable
exclude_columns, reflection_options)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\sqlalc
hemy\engine\reflection.py", line 720, in _reflect_fk
**reflection_options
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\sqlalc
hemy\sql\schema.py", line 441, in __new__
metadata._remove_table(name, schema)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\sqlalc
hemy\util\langhelpers.py", line 60, in __exit__
compat.reraise(exc_type, exc_value, exc_tb)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\sqlalc
hemy\sql\schema.py", line 432, in __new__
table._init(name, metadata, *args, **kw)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\sqlalc
hemy\sql\schema.py", line 513, in _init
self._autoload(metadata, autoload_with, include_columns)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\sqlalc
hemy\sql\schema.py", line 528, in _autoload
self, include_columns, exclude_columns
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\sqlalc
hemy\engine\base.py", line 1481, in run_callable
return callable_(self, *args, **kwargs)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\sqlalc
hemy\engine\default.py", line 364, in reflecttable
return insp.reflecttable(table, include_columns, exclude_columns)
File "F:\Workspace\MyProject\src\virtualenv\Lib\site-packages\sqlalc
hemy\engine\reflection.py", line 578, in reflecttable
raise exc.NoSuchTableError(table.name)
sqlalchemy.exc.NoSuchTableError: auth_user
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