#33192: It is not possible to use a custom lookup/transorm in a CheckConstraint
-------------------------------------+-------------------------------------
     Reporter:  Fabien MICHEL        |                    Owner:  nobody
         Type:  Bug                  |                   Status:  closed
    Component:  Database layer       |                  Version:  3.1
  (models, ORM)                      |               Resolution:
     Severity:  Normal               |  worksforme
     Keywords:  lookup, transform,   |             Triage Stage:
  CheckContraint, migrate            |  Unreviewed
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------

Comment (by Fabien MICHEL):

 In this case, won't I expose my migration to use code that could be
 ananchronic if the code of the custom lookup changes after the migration
 has been created ?
 Is it not better to embed the custom lookup on the migration which insert
 the constraint in database ?

-- 
Ticket URL: <https://code.djangoproject.com/ticket/33192#comment:7>
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