#25794: loaddata with UUIDs as natural foreign keys does not work anymore
-------------------------------------+-------------------------------------
     Reporter:  GunnarScherf         |                    Owner:  nobody
         Type:  Bug                  |                   Status:  new
    Component:  Core (Management     |                  Version:  1.9rc1
  commands)                          |
     Severity:  Normal               |               Resolution:
     Keywords:  UUID loaddata        |             Triage Stage:
  --natural-foreign                  |  Unreviewed
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------
Changes (by GunnarScherf):

 * needs_better_patch:   => 0
 * needs_tests:   => 0
 * needs_docs:   => 0


Old description:

> When I run dumpdata with a model which has a UUIDField as a natural key,
> the dump can not be loaded anymore.
> {{{
> manage.py dumpdata --natural-foreign  myapp
> manage.py loaddata  myapp
> }}}
>
> The dump looks like this
> {{{
> [
> {
>   "model": "accounts.applicationrole",
>   "fields": {
>     "application": [
>       "ec1e39cb-e3e7-46c7-87b7-70ace4165d13"
>     ],
>     ...
> }}}
> The error message in loaddata is:
> {{{
> '(UUID('ec1e39cb-e3e7-46c7-87b7-70ace4165d13'),)' is not a valid UUID.
> }}}

New description:

 When I run dumpdata with a model which has a UUIDField as a natural key,
 the dump can not be loaded anymore.
 {{{
 manage.py dumpdata --natural-foreign  myapp
 manage.py loaddata  myapp
 }}}

 The model :
 {{{#!python
 class ApplicationManager(models.Manager):
     def get_by_natural_key(self, uuid):
         return self.get(uuid=uuid)

 class Application(models.Model):
     uuid = models.UUIDField(unique=True, default=uuid.uuid4,
 editable=True)
     ...
 }}}

 The dump looks like this
 {{{
 [
 {
   "model": "accounts.applicationrole",
   "fields": {
     "application": [
       "ec1e39cb-e3e7-46c7-87b7-70ace4165d13"
     ],
     ...
 }}}
 The error message in loaddata is:
 {{{
 '(UUID('ec1e39cb-e3e7-46c7-87b7-70ace4165d13'),)' is not a valid UUID.
 }}}

--

--
Ticket URL: <https://code.djangoproject.com/ticket/25794#comment:1>
Django <https://code.djangoproject.com/>
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