#28057: Admin inlines very slow to render
--------------------------------+--------------------------------------
Reporter: Marc DEBUREAUX | Owner: nobody
Type: Bug | Status: new
Component: contrib.admin | Version: 1.11
Severity: Normal | Resolution:
Keywords: admin inlines | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 1
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Description changed by Marc DEBUREAUX:
Old description:
> When using inlines in Django admin, it renders very poorly even when
> creating a new element (so no data to load, database time always the
> same).
>
> And the higher the number in "extra" parameter, the longer it takes to
> load the form.
>
> {{{
> class EffectModifierInline(admin.TabularInline):
> model = EffectModifier
> extra = 1
>
> @admin.register(Effect)
> class EffectAdmin(admin.ModelAdmin):
> fieldsets = (
> # Whatever
> )
> inlines = [EffectModifierInline]
> # TODO:
> list_display = ()
> list_editable = ()
> list_filter = ()
>
> def get_queryset(self, request):
> return
> super().get_queryset(request).prefetch_related('modifiers')
> }}}
>
> ''With 15 inlines''
> [[Image(https://cdn.pbrd.co/images/1VQk4eH7X.png)]]
>
> ''With only 1 inline''
> [[Image(https://cdn.pbrd.co/images/1VSyev0B9.png)]]
>
> ''With no inline''
> [[Image(https://cdn.pbrd.co/images/1VTx3aMU3.png)]]
New description:
When using inlines in Django admin, it renders very poorly even when
creating a new element (so no data to load, database time always the
same).
And the higher the number in "extra" parameter, the longer it takes to
load the form.
**Works well with Django 1.10**
{{{
class EffectModifierInline(admin.TabularInline):
model = EffectModifier
extra = 1
@admin.register(Effect)
class EffectAdmin(admin.ModelAdmin):
fieldsets = (
# Whatever
)
inlines = [EffectModifierInline]
# TODO:
list_display = ()
list_editable = ()
list_filter = ()
def get_queryset(self, request):
return super().get_queryset(request).prefetch_related('modifiers')
}}}
''With 15 inlines''
[[Image(https://cdn.pbrd.co/images/1VQk4eH7X.png)]]
''With only 1 inline''
[[Image(https://cdn.pbrd.co/images/1VSyev0B9.png)]]
''With no inline''
[[Image(https://cdn.pbrd.co/images/1VTx3aMU3.png)]]
--
--
Ticket URL: <https://code.djangoproject.com/ticket/28057#comment:1>
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