No default encoding (2.0.0a1)

[ghost]

I kept getting the error AttributeError: 'DatabaseWrapper' object has no attribute 'encoding' and it turns out that encoding is only set by default in this block of base.py if there is an OPTIONS key who's value is a dictionary with least one key.

Workaround: add an OPTIONS key to your config that has a populated dictionary

Possible solutions:

1. Check and set base.py after line 202 with something like

        self.encoding = 'utf-8'

and also update the README.rst to reflect that encoding isn't only set to 'utf-8' by default when OPTIONS is specified

2. Change line 394 in base.py from 'return CursorWrapper(cursor, self.driver_supports_utf8, self.encoding, self)' to 'return CursorWrapper(cursor, self.driver_supports_utf8, getattr(self, 'encoding'), self)

CursorWrapper's init function is ready to handle None/empty string values, so I'm not sure which solution works better behind the goals of the project.

[RossRogers]

@rcucui,
I don't see what line you're talking about for this error:

AttributeError: 'DatabaseWrapper' object has no attribute 'encoding' 

Your link labeled "in this block of base.py" points to this line:

self.MARS_Connection = options.get('MARS_Connection', False)

[ghost]

@RossRogers I went one line too low into the if options: block instead of the start of the block.
Updated the link.

The original traceback raises an exception at line 394:

Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x10fb4a6a8>
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/utils/autoreload.py", line 225, in wrapper
    fn(*args, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/core/management/commands/runserver.py", line 123, in inner_run
    self.check_migrations()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/core/management/base.py", line 427, in check_migrations
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/db/migrations/executor.py", line 18, in __init__
    self.loader = MigrationLoader(self.connection)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/db/migrations/loader.py", line 49, in __init__
    self.build_graph()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/db/migrations/loader.py", line 206, in build_graph
    self.applied_migrations = recorder.applied_migrations()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 61, in applied_migrations
    if self.has_table():
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/db/migrations/recorder.py", line 44, in has_table
    return self.Migration._meta.db_table in self.connection.introspection.table_names(self.connection.cursor())
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/db/backends/base/base.py", line 255, in cursor
    return self._cursor()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django_pyodbc/base.py", line 356, in _cursor
    if self.ops.sql_server_ver < 2005:
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django_pyodbc/operations.py", line 130, in _get_sql_server_ver
    cur = self.connection.cursor()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django/db/backends/base/base.py", line 255, in cursor
    return self._cursor()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/django_pyodbc/base.py", line 394, in _cursor
    return CursorWrapper(cursor, self.driver_supports_utf8, self.encoding, self)
AttributeError: 'DatabaseWrapper' object has no attribute 'encoding'

[RossRogers]

I guess we can change like:

diff --git a/django_pyodbc/base.py b/django_pyodbc/base.py
index dab5399..07357de 100644
--- a/django_pyodbc/base.py
+++ b/django_pyodbc/base.py
@@ -392,7 +392,7 @@ class DatabaseWrapper(BaseDatabaseWrapper):
                 self.driver_supports_utf8 = (self.drv_name == 'SQLSRV32.DLL'
                                              or ms_sqlncli.match(self.drv_name))

-        return CursorWrapper(cursor, self.driver_supports_utf8, self.encoding, self)
+        return CursorWrapper(cursor, self.driver_supports_utf8, getattr(self, 'encoding', 'utf-8'), self)

     def _execute_foreach(self, sql, table_names=None):
         cursor = self.cursor()

Anyways, I'm not sure how functional the library is without the database configuration.