tweak to get_direction, rolls back a comparison of "foreigntable" to "parent"/"mapper" table to be more constrained.  this change was originally in [changeset:1101] to help out the polymorph example but it now works without it.  the change breaks the Post/Comment relationship in the ZBlog demo since the Post mapper has the comments table inside of it (also with no workaround).
tweak to get_direction, rolls back a comparison of "foreigntable" to "parent"/"mapper" table to be more constrained.  this change was originally in [changeset:1101] to help out the polymorph example but it now works without it.  the change breaks the Post/Comment relationship in the ZBlog demo since the Post mapper has the comments table inside of it (also with no workaround).


git-svn-id: 655ff90ec95d1eeadb1ee4bb9db742a3c015d499@1132 8cd8332f-0806-0410-a4b6-96f4b9520244

obeattie/sqlalchemy,obeattie/sqlalchemy,obeattie/sqlalchemy