012-Django Delete Data

Objectives: Django Delete Data

Django Delete Data

Deleting Data in Django

1. Get the Record to Delete

Import your model and select the record you want to delete:

>>> from members.models import Member
>>> x = Member.objects.all()[5]

Check the record to make sure it’s the right one:

>>> x.firstname
'Jane'

Real-life Example:

This is like finding a student in a class register before removing their entry. Always double-check before deleting.

2. Delete the Record

>>> x.delete()

Output:

(1, {'members.Member': 1})

This shows that 1 record was deleted from the Member model.

3. Verify Deletion

>>> Member.objects.all().values()
<QuerySet [{'id': 1, 'firstname': 'Emil', 'lastname': 'Refsnes'},
{'id': 2, 'firstname': 'Tobias', 'lastname': 'Refsnes'},
{'id': 3, 'firstname': 'Linus', 'lastname': 'Refsnes'},
{'id': 4, 'firstname': 'Lene', 'lastname': 'Refsnes'},
{'id': 5, 'firstname': 'Stalikken', 'lastname': 'Refsnes'}]>

Advice:

Deleting data is permanent unless you implement soft deletes. Always double-check the record index before deleting.

Exercise:

Question: How would you delete the first member (Emil) from the Members table?

Answer:

>>> x = Member.objects.all()[0]
>>> x.delete()

Reference Book: N/A

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