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pickleable Django QuerySet

Project description

OUTLINE

Persistent representation of django QuerySet`s.

Quick creation of simple search functionality without custom SQL or implicit markers/ids/indexes storing.

EXAMPLES

Trivial example

from stored.queryset import FilterQuerySet
q = FilterQuerySet('Q(text__icontains="sometext")', 'someapp.somemodel')
q.objects.all() #outputs all

loads(dumps(q)).objects.all() #same result

Simple with literals

#define default literals
q0 = FilterQuerySet('Q(text__icontains="{literal_text}")',
                    'someapp.somemodel',
                    literal_parameter='"sometext"')

#new queryset with different `literal_text` value
q1 = q0.literal(literal_text='"some_other_text"').objects.all()
#literals are parsed with safe `ast.literal_eval` and can be taken from user input

#q1 can be pickled and thus user search can be stored in db
#if to keep different `FilterQuerySet` for each user.
loads(dumps(q1)).objects.all() #same result

INSTALLATION

Try one of these:

pip install django-stored-queryset
easy_install django-stored-queryset

Project details


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