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Diffstat (limited to 'docs/db-api.txt')
| -rw-r--r-- | docs/db-api.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/docs/db-api.txt b/docs/db-api.txt index 9a604bf320..5fdcd946bd 100644 --- a/docs/db-api.txt +++ b/docs/db-api.txt @@ -2212,6 +2212,18 @@ updated is that it can only access one database table, the model's main table. So don't try to filter based on related fields or anything like that; it won't work. +Be aware that the ``update()`` method is converted directly to an SQL +statement. It is a bulk operation for direct updates. It doesn't run any +``save()`` methods on your models, or emit the ``pre_save`` or ``post_save`` +signals (which are a consequence of calling ``save()``). If you want to save +every item in a ``QuerySet`` and make sure that the ``save()`` method is +called on each instance, you don't need any special function to handle that. +Just loop over them and call ``save()``: + + for item in my_queryset: + item.save() + + Extra instance methods ====================== |