Hey, I was having a bit trouble trying to understand the idea.
- The SponsporedBooks model has user field which isn't being used here.
Where do you plan to user this ?
- The CustomSponsoredBooks model does not have a user field. Are you not
trying to store the points for the books (possible for recommendations)
specific to every user. I see that you are calculating these are runtime
does that mean the user interests are too volatile ?
I think these things could clear things up
On Saturday, June 13, 2020 at 8:18:29 PM UTC+5:30, Himanshu Pharawal wrote:
>
> #This code is use to match current user interests to
> SponsoredBook.keywords and if it matches more than one keyword we increase
> it's points and finally we sort this on the basis of points and pass it to
> the templates.
> #For a small amount of data this works fine as will data will grow this is
> going to make process slow. This is why i need a different optimal approach
> to do this.
>
> #Please reach out to me if you need more information on the same.
>
> #models.py - my model looks something like this
> class Intrest(models.Model):
> user = models.ForeignKey(User, related_name='intrests',
> on_delete=models.CASCADE)
> keyword = models.CharField(max_length=100)
> created_on = models.DateTimeField(auto_now_add=True)
>
> def __str__(self):
> return self.keyword
>
> class Meta:
> ordering = ['-created_on']
>
> class SponsoredBook(models.Model):
>
> places = (
> ('Royal Place', 'Royal Place'),
> ('Search Result', 'Search Result')
> )
>
> def validate_image(fieldfile_obj):
> if get_image_dimensions(fieldfile_obj) != (180, 290):
> raise ValidationError("Thumnail should be exact 180*290")
> user = models.ForeignKey(User, related_name='sponsored_books',
> on_delete=models.CASCADE)
>
> def user_directory_path(self, filename):
> return 'media/user_{0}/{1}'.format(self.user.id, filename)
> title = models.CharField(max_length=20)
> bid = models.FloatField()
> placed_on = models.CharField(choices=places, max_length=20)
> description = models.TextField()
> height = models.PositiveIntegerField()
> width = models.PositiveIntegerField()
> verified = models.BooleanField(default=False)
> thumbnail = models.ImageField(upload_to=user_directory_path,
> height_field='height', width_field='width', validators=[validate_image])
> created_on = models.DateTimeField(auto_now_add=True)
>
> def __str__(self):
> return str(self.title)
>
> class Meta:
> ordering = ['-bid']
>
> class Keyword(models.Model):
> sponsored_book = models.ForeignKey(SponsoredBook, related_name='keywords',
> on_delete=models.CASCADE)
> title = models.CharField(max_length=50)
>
> def __str__(self):
> return self.title
>
> class Meta:
> ordering = ['title']
>
> #views.py
> class CustomSponsoredBook():
> obj = models.SponsoredBook.objects.none()
> points = 0
>
> user = get_object_or_404(User, id=3)
> intrests = user.intrests.all()
> final_sponsored_books = []
> count = 0
> for intrest in intrests:
> print(intrest)
> sponsored_books = models.SponsoredBook.objects.filter(verified=True,
> keywords__title__iexact=intrest)
> print(sponsored_books)
> if sponsored_books.exists():
> sponsored_books = list(sponsored_books)
> for sponsored_book in sponsored_books:
> should_continue = False
> for custom_sponsored_book in final_sponsored_books:
> if custom_sponsored_book.obj == sponsored_book:
> custom_sponsored_book.points += 1
> should_continue =True
> break
> if should_continue:
> continue
> custom_sponsored_book = CustomSponsoredBook()
> custom_sponsored_book.obj = sponsored_book
> final_sponsored_books.append(custom_sponsored_book)
> if len(final_sponsored_books) == 6:
> break
> final_sponsored_books.sort(key=lambda x: x.points, reverse=True)
>
>
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