127 lines
3.1 KiB
Python
127 lines
3.1 KiB
Python
# -*- coding: utf-8 -*-
|
|
# vi:si:et:sw=4:sts=4:ts=4
|
|
from django.db.models import Q, Manager
|
|
|
|
|
|
def parseCondition(condition, user):
|
|
'''
|
|
'''
|
|
k = condition.get('key', 'name')
|
|
k = {
|
|
'user': 'user__username',
|
|
}.get(k, k)
|
|
if not k:
|
|
k = 'name'
|
|
v = condition['value']
|
|
op = condition.get('operator')
|
|
if not op:
|
|
op = '='
|
|
if op.startswith('!'):
|
|
op = op[1:]
|
|
exclude = True
|
|
else:
|
|
exclude = False
|
|
if k == 'id':
|
|
try:
|
|
public_id = v.split(':')
|
|
username = public_id[0]
|
|
name = ":".join(public_id[1:])
|
|
extension = name.split('.')
|
|
name = '.'.join(extension[:-1])
|
|
extension = extension[-1].lower()
|
|
q = Q(user__username=username, name=name, extension=extension)
|
|
except:
|
|
q = Q(id__in=[])
|
|
return q
|
|
if isinstance(v, bool): #featured and public flag
|
|
key = k
|
|
else:
|
|
key = "%s%s" % (k, {
|
|
'==': '__iexact',
|
|
'^': '__istartswith',
|
|
'$': '__iendswith',
|
|
}.get(op, '__icontains'))
|
|
key = str(key)
|
|
if exclude:
|
|
q = ~Q(**{key: v})
|
|
else:
|
|
q = Q(**{key: v})
|
|
return q
|
|
|
|
def parseConditions(conditions, operator, user):
|
|
'''
|
|
conditions: [
|
|
{
|
|
value: "war"
|
|
}
|
|
{
|
|
key: "year",
|
|
value: "1970-1980,
|
|
operator: "!="
|
|
},
|
|
{
|
|
key: "country",
|
|
value: "f",
|
|
operator: "^"
|
|
}
|
|
],
|
|
operator: "&"
|
|
'''
|
|
conn = []
|
|
for condition in conditions:
|
|
if 'conditions' in condition:
|
|
q = parseConditions(condition['conditions'],
|
|
condition.get('operator', '&'), user)
|
|
if q:
|
|
conn.append(q)
|
|
pass
|
|
else:
|
|
conn.append(parseCondition(condition, user))
|
|
if conn:
|
|
q = conn[0]
|
|
for c in conn[1:]:
|
|
if operator == '|':
|
|
q = q | c
|
|
else:
|
|
q = q & c
|
|
return q
|
|
return None
|
|
|
|
|
|
class DocumentManager(Manager):
|
|
|
|
def get_query_set(self):
|
|
return super(DocumentManager, self).get_query_set()
|
|
|
|
def find(self, data, user):
|
|
'''
|
|
query: {
|
|
conditions: [
|
|
{
|
|
value: "war"
|
|
}
|
|
{
|
|
key: "year",
|
|
value: "1970-1980,
|
|
operator: "!="
|
|
},
|
|
{
|
|
key: "country",
|
|
value: "f",
|
|
operator: "^"
|
|
}
|
|
],
|
|
operator: "&"
|
|
}
|
|
'''
|
|
|
|
#join query with operator
|
|
qs = self.get_query_set()
|
|
conditions = parseConditions(data['query'].get('conditions', []),
|
|
data['query'].get('operator', '&'),
|
|
user)
|
|
if conditions:
|
|
qs = qs.filter(conditions)
|
|
|
|
return qs
|
|
|