cablegates/pandora/backend/managers.py
2010-06-27 14:44:57 +02:00

172 lines
5.6 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
import re
from datetime import datetime
from urllib2 import unquote
import json
from django.contrib.auth.models import User
from django.core.exceptions import ObjectDoesNotExist
from django.db.models import Q, Manager
import models
def keyType(key):
if key in ('released'):
return "date"
if key in ('year', 'cast.length'):
return "int"
if key in ('rating', 'votes'):
return "float"
return "string"
class MovieManager(Manager):
def get_query_set(self):
return super(MovieManager, self).get_query_set()
def filter_list(self, qs, l, user):
if l != "all":
l = l.split(":")
only_public = True
if not user.is_anonymous():
if len(l) == 1: l = [request.user.username] + l
if request.user.username == l[0]:
only_public = False
if len(l) == 2:
lqs = models.List.objects.filter(name=l[1], user__username=l[0])
if only_public:
lqs = qls.filter(public=True)
if lqs.count() == 1:
qs = qs.filter(listitem__list__id=lqs[0].id)
return qs
def find(self, data, user):
'''
query: {
conditions: [
{
value: "war""
}
{
key: "year",
value: "1970-1980,
operator: "!="
},
{
key: "country",
value: "f",
operator: "^"
}
],
operator: "&"
}
'''
query_operator = data['query'].get('operator', '&')
conditions = []
for condition in data['query']['conditions']:
k = condition.get('key', 'all')
v = condition['value']
op = condition.get('operator', None)
if op.startswith('!'):
op = op[1:]
exclude = True
else:
exclude = False
if keyType(k) == "string":
if op == '=':
k = '%s__iexact' % k
elif op == '^':
v = v[1:]
k = '%s__istartswith' % k
elif op == '$':
v = v[:-1]
k = '%s__iendswith' % k
else: # elif op == '~':
k = '%s__icontains' % k
k = 'find__%s' % k
k = str(k)
if exclude:
conditions.append(~Q(**{k:v}))
else:
conditions.append(Q(**{k:v}))
else: #number or date
def parseDate(d):
while len(d) < 3:
d.append(1)
return datetime(*[int(i) for i in d])
if op == '-':
v1 = v[1]
v2 = v[2]
if keyType(k) == "date":
v1 = parseDate(v1.split('.'))
v2 = parseDate(v2.split('.'))
if exclude: #!1960-1970
k1 = str('%s__lt' % k)
k2 = str('%s__gte' % k)
conditions.append(Q(**{k1:v1})|Q(**{k2:v2}))
else: #1960-1970
k1 = str('%s__gte' % k)
k2 = str('%s__lt' % k)
conditions.append(Q(**{k1:v1})&Q(**{k2:v2}))
else:
if keyType(k) == "date":
v = parseDate(v.split('.'))
if op == '>':
k = str('%s__gt' % k)
elif op == '>=':
k = str('%s__gte' % k)
elif op == '<':
k = str('%s__lt' % k)
elif op == '<=':
k = str('%s__lte' % k)
k = str(k)
if exclude: #!1960
conditions.append(~Q(**{k:v}))
else: #1960
conditions.append(Q(**{k:v}))
#join query with operator
qs = self.get_query_set()
#only include movies that have hard metadata
qs = qs.filter(available=True)
if conditions:
q = conditions[0]
for c in conditions[1:]:
if query_operator == '|':
q = q | c
else:
q = q & c
qs = qs.filter(q)
# filter list, works for own or public lists
l = data.get('list', 'all')
qs = self.filter_list(qs, l, user)
return qs
class FileManager(Manager):
def get_query_set(self):
return super(FileManager, self).get_query_set()
def movie_files(self, movie):
q = self.get_query_set()
return q.filter(type=1, movie=movie)
class ArchiveFileManager(Manager):
def get_query_set(self):
return super(ArchiveFileManager, self).get_query_set()
def movie_files(self, movie):
q = self.get_query_set()
return q.filter(file__is_video=True, file__movie=movie)
def by_oshash(self, oshash):
q = self.get_query_set()
q = q.filter(file__oshash=oshash)
if q.count() == 0:
raise models.ArchiveFile.DoesNotExist("%s matching oshash %s does not exist." %
(models.ArchiveFile._meta.object_name, oshash))
else:
return q[0]