Use
objects.filter
———
e.g.,
>>>Card.objects.filter(name=’Hot Pot’)
>>>Card.objects.filter(name=’Hot Pot’, city=’San Diego’)
>>>Card.objects.filter(name_contains=’Hot’)
[<Card: Hot Pot>]
Note that here filter() returned a
QuerySet
which is like a list.
{{card.body|safe}}
Django template automatically “escapes” the contents of variables to prevent cross-site scripting attacks.
The safe filter lets you tell Django that you trust a variable and it doesn’t need a escaping.
–
other example of filter
{{card.body_html|truncatedwords_html:”50″|safe}}
{{card.pub_date|date:”F j, Y”}}
keyword_results=Card.objects.filter(searchkeyword__keyword__in=query.split()).distinct()
if keyword_results.count() == 1:
return HttpResponsRedirect(keyword_results[0].get_absolute_url())
————
results of database queries is special object called
QuerySet
is the class Django uses to represent a database query.
Each QuerySet has methods such as,
filter()
distinct()
count()
etc.
