Re: [Django] #12697: Prevent deletion of some rows in a formset

[Django]

#12697: Prevent deletion of some rows in a formset
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Reporter: shadfc | Owner: nobody
Type: New feature | Status: new
Component: Forms | Version: 1.1
Severity: Normal | Resolution:
Keywords: | Triage Stage: Accepted
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by darklow):

I found a very easy solution for this problem to avoid unwanted deletion
of some inlines
You can just override delete_forms property method.

{{{
class MyInlineFormSet(BaseInlineFormSet):

@property
def deleted_forms(self):
deleted_forms = super(MyInlineFormSet, self).deleted_forms

for i, form in enumerate(deleted_forms):
if some_criteria_to_prevent_deletion:
deleted_forms.pop(i)

return deleted_forms
}}}

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Ticket URL: <https://code.djangoproject.com/ticket/12697#comment:5>
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