#30587: Cloaking exceptions raised by get_object_or_404().
-------------------------------------+-------------------------------------
     Reporter:  Ishwar Bhat          |                    Owner:  nobody
         Type:  New feature          |                   Status:  closed
    Component:  Database layer       |                  Version:  master
  (models, ORM)                      |
     Severity:  Normal               |               Resolution:  duplicate
     Keywords:                       |             Triage Stage:
                                     |  Unreviewed
    Has patch:  0                    |      Needs documentation:  0
  Needs tests:  0                    |  Patch needs improvement:  0
Easy pickings:  0                    |                    UI/UX:  0
-------------------------------------+-------------------------------------
Changes (by felixxm):

 * status:  new => closed
 * component:  Uncategorized => Database layer (models, ORM)
 * version:  2.2 => master
 * resolution:   => duplicate


Old description:

> When we use get_object_or_404() method to query an object, sometimes due
> to invalid inputs it will through exceptions. Instead can it raise 404
> directly?
> Ex:
>
> Models:
> >>class Test1(models.Model):
> >>    c2 = models.CharField(max_length=10)
>
> >>class Test2(models.Model):
> >>    c1 = models.UUIDField(primary_key=True, default=uuid.uuid4)
> >>    c2 = models.CharField(max_length=10)
>
> query:
> 1. Below statement raises valueError:
>     >> get_object_or_404(Test1, pk='test')
>     >> - invalid literal for int() with base 10: 'test'
>
> 2. Below statement raises ValidationError:
>     >> get_object_or_404(Test2, pk="test")
>     >> - 'test' is not a valid UUID.
>
> So this method will throw diffrent exceptions in diffenrent scenario. So
> would it be possible to raise 404 exceptions even if it finds invalid
> values.

New description:

 When we use get_object_or_404() method to query an object, sometimes due
 to invalid inputs it will through exceptions. Instead can it raise 404
 directly?
 Ex:

 Models:
 {{{
 >>class Test1(models.Model):
 >>    c2 = models.CharField(max_length=10)

 >>class Test2(models.Model):
 >>    c1 = models.UUIDField(primary_key=True, default=uuid.uuid4)
 >>    c2 = models.CharField(max_length=10)
 }}}
 query:
 1. Below statement raises valueError:
 {{{
     >> get_object_or_404(Test1, pk='test')
     >> - invalid literal for int() with base 10: 'test'
 }}}
 2. Below statement raises ValidationError:
 {{{
     >> get_object_or_404(Test2, pk="test")
     >> - 'test' is not a valid UUID.
 }}}
 So this method will throw different exceptions in different scenario. So
 would it be possible to raise 404 exceptions even if it finds invalid
 values.

--

Comment:

 Duplicate of #22303.

-- 
Ticket URL: <https://code.djangoproject.com/ticket/30587#comment:2>
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