Synonym properties break when added through add_property

[Former user]

(original reporter: ged) Synonym properties added through add_property throw an exception when setting the attribute. I get the following traceback for the attached script. It might be related to ticket #831 (though I don't think it is).

Traceback (most recent call last):
  File "test_synonym_sa.py", line 32, in <module>
    f1.email = "[e-mail]"
  File "/home/ged/devel/sqlalchemy/trunk/lib/sqlalchemy/orm/attributes.py", line 91, in __set__
    return self.user_prop.__set__(instance, value)
  File "/home/ged/devel/sqlalchemy/trunk/lib/sqlalchemy/orm/mapper.py", line 560, in __getattribute__
    return object.__getattribute__(self, key)
AttributeError: '_CompileOnAttr' object has no attribute '__set__'

[Former user]

(original author: ged) btw, the traceback is for trunk as of now (0ec4e7d6b35685ba4b5d9e2053c765984b4a9189).

[Mike Bayer]

this went better than expected, its the replacement of the old column property thats complex here, but actually its not complicated at all and works nicely, so aa71eed4e26914cbd2dea19676b7fddef13d938a.

[Former user]

(original author: ged)

[Former user]

(original author: ged) Doesn't work so nicely in fact. Here is an updated test case which shows that the (python) property is in fact not used.

[Former user]

(original author: ged) Updated test case

[Former user]

(original author: ged) Updated test case

[Former user]

(original author: ged) The correct test case is test_synonym_sa.py. There was a bug in .2.py.

[Mike Bayer]

ok, 56c544edab96654976214acd0226efca9c168b89