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Fix #18306 -- Defer and update_fields interaction. #213

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Fix #18306 -- Defer and update_fields interaction. #213

wants to merge 2 commits into from

Commits on Jul 16, 2012

  1. Fixed #18306 -- Made deferred models issue update_fields on save 

    Deferred models now automatically update only the fields which are
loaded from the db (with .only() or .defer()). In addition, any field
set manually after the load is updated on save.
    @akaariai
    Andrei Antoukh authored and akaariai committed Jul 16, 2012
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  2. Polished update_only and defer() interaction 

    The biggest changes are:
  - a bugfix to select_related handling
  - a bugfix for shared ._state.deferred_fields for instances loaded
    through the same queryset.
  - some code cleanup related to field.name <> field.attname handling
  - documentation polish

The bugfixes were done by getting totally rid of ._state.deferred_fields
and instead relying on inspecting the instance's __dict__ and
__class__.__dict__ for deferred field information on save.

Refs #18306.
    @akaariai
    akaariai committed Jul 16, 2012
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