python / beginner
Snippet
Safe Object Retrieval
The get_object_or_404 shortcut is a clean way to fetch a single database record. If the record does not exist, it automatically raises a 404 Http error.
snippet.py
python
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from django.shortcuts import get_object_or_404from .models import Productdef detail(request, product_id):item = get_object_or_404(Product, pk=product_id)
django
Breakdown
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from django.shortcuts import get_object_or_404
Imports the helper function that combines a database query with error handling.
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item = get_object_or_404(Product, pk=product_id)
Attempts to find a Product where the primary key (pk) matches product_id, or stops execution with a 404 page.