Anssi Kääriäinen 37c87b785d [1.4.x] Fixed #18823 -- Ensured m2m.clear() works when using through+to_field ...

There was a potential data-loss issue involved -- when clearing
instance's m2m assignments it was possible some other instance's
m2m data was deleted instead.

This commit also improved None handling for to_field cases.

Backpatch of 611c4d6f1c

2012-10-28 17:38:26 +02:00

8.9 KiB

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