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maxwell ruzvidzo
6,822 Pointsrelated records
i cannot understand can soeone please assist
import datetime
from django.db.models import Q, Avg
from django.http import Http404
from django.shortcuts import render, get_object_or_404
from . import models
def good_reviews(request):
reviews = models.Review.objects.filter(rating__gte=3)
return render(request, 'products/reviews.html', {'reviews': reviews})
def recent_reviews(request):
six_months_ago = datetime.datetime.today() - datetime.timedelta(days=180)
reviews = models.Review.objects.exclude(created_at__lt=six_months_ago)
return render(request, 'products/reviews.html', {'reviews': reviews})
def product_detail(request, pk):
try:
product = models.Product.objects.prefetch_related('review_set').get(pk=pk)
except models.Product.DoesNotExist:
raise Http404()
four_weeks_ago = datetime.datetime.today() - datetime.timedelta(weeks=4)
reviews = product.review_set.filter(Q(rating__gte=8)|Q(created_at__gte=four_weeks_ago)).order_by('-created_at').all()
return render(request, 'products/product_detail.html', {'product': product, 'reviews': reviews})
def product_list(request):
products = models.Product.objects.annotate(avg_rating=Avg('review__rating')).all()
return render(request, 'products/product_list.html', {'products': products})
def review_detail(request, product_pk, pk):
try:
review = models.Review.objects.select_related(product_id=product_pk, pk=pk)
except models.Review.DoesNotExist:
raise Http404()
else:
return render(request, 'products/review_detail.html', {'review': review})
1 Answer

Chris Freeman
Treehouse Moderator 68,179 PointsYou are very close. Instead of modifying the arguments to the .get()
method from the given:
review = models.Review.objects.get(product_id=product_pk, pk=pk)
In the challenge, you only need to insert a .select_related('product')
method to the query before the .get()
method
Post back if you need more help. Good luck!