1.



def retrieve(self, request, pk=None):
        try:
            book = Book.objects.get(book_id=pk)
        except Book.DoesNotExist:
            return HttpResponse(status=404)    

        # queryset = Book.objects.all()
        # book = get_object_or_404(queryset, pk=pk)
        serializer = BookSerializer(book)
        return Response(serializer.data)


2.boostrap

 

3.



class Category(models.Model):
    categoryid = models.IntegerField(default=0)
    createtime = models.IntegerField(default=0)
    display = models.IntegerField(default=0)
    uses = models.IntegerField(default=0)
    entitle = models.CharField(max_length=255, unique=True)
    zhtitle = models.CharField(max_length=255, unique=True)
    intro = models.TextField(blank=True)
    miniposter = models.CharField(max_length=255, unique=True)
    poster = models.CharField(max_length=255, unique=True)
    status = models.IntegerField(default=0)
    topcatid = models.IntegerField(default=0)

    def __unicode__(self):
        return '%s' % self.entitle

class Theme(models.Model):
    themeid = models.IntegerField(default=0)
    category = models.ForeignKey(Category)
    display = models.IntegerField(default=0)
    grade = models.IntegerField(default=0)
    intro = models.TextField(blank=True)
    poster = models.CharField(max_length=255, unique=True)
    status = models.IntegerField(default=0)
    uses = models.IntegerField(default=0)
    tips = models.CharField(max_length=255, blank=True)
    title = models.CharField(max_length=255, unique=True)

    def __unicode__(self):
        return '%s' % self.title


 



class ThemeSerializer(serializers.HyperlinkedModelSerializer):
    category = CategorySerializer()
    class Meta:
        model = Theme
        fields = ('category',  'display', 'grade', 'intro', 'poster', 'status', 'themeid', 'uses', 'title', 'tips')

class ThemeSet(viewsets.ModelViewSet):
    queryset = Theme.objects.all()
    serializer_class = ThemeSerializer