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POHow to get the latest 3 books from each author using django
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2011-04-17T06:16:51.757
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Using the following django models: <pre><code>class Author(models.Model): name = models.CharField(max_length=100) age = models.IntegerField() class Book(models.Model): name = models.CharField(max_length=300) author = models.ForeignKey(Author) pubdate = models.DateField() class Meta: ordering = ('-pubdate') </code></pre> How can i get the five latest books published by each author? I had considered iterate each author and get books published by the author slicing to 5. <pre><code>for a in Author.objects.all(): books = Book.objects.filter(author = a )[:5] print books #and/or process the entries... </code></pre> But, if the tables has a lot of records (maybe thousands of books), this could be slow and inefficient. So, is there any other way to accomplish this with django (or a sql query) ?
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How to get the latest 3 books from each author using django
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