Returning JSON object

Hi guys,
I have a model called Page:
   
class Page(models.Model):
    category = models.ForeignKey(Category)
    title = models.CharField(max_length=128)
    url = models.URLField()
    views = models.IntegerField(default=0)

I want to return all the Page record in my database at once to ajax request. This record is up to 1000 rows. In my view, I try to convert this to Json:
page = Page.objects.all()
data=json.dumps(page)
But I got error: your object is not serializable

So pls, my question is how can I return multiple records of database rows to ajax request at once so that at JavaScript side, I should be able to access each field of my record. ?

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