pandora/pandora/sequence/views.py
2013-07-17 18:58:15 +00:00

123 lines
3.6 KiB
Python

# -*- coding: utf-8 -*-
# vi:si:et:sw=4:sts=4:ts=4
from __future__ import division
from ox.utils import json
from ox.django.shortcuts import render_to_json_response, json_response
from ox.django.api import actions
from item.models import Item
from item import utils
import models
def parse_query(data, user):
query = {}
query['range'] = [0, 100]
query['sort'] = [{'key':'in', 'operator':'+'}]
for key in ('keys', 'group', 'range', 'sort', 'query'):
if key in data:
query[key] = data[key]
query['qs'] = models.Sequence.objects.find(query, user)
if 'itemsQuery' in data and data['itemsQuery'].get('conditions'):
item_query = Item.objects.find({'query': data['itemsQuery']}, user)
query['qs'] = query['qs'].filter(item__in=item_query)
return query
def order_query(qs, sort):
order_by = []
sort += [
{'key': 'in', 'operator': '-'},
]
for e in sort:
operator = e['operator']
if operator != '-':
operator = ''
key = {
'in': 'start',
'out': 'end',
'position': 'start',
}.get(e['key'], e['key'])
if key not in ('duration', 'start', 'end', 'mode', 'hash'):
key = 'sort__%s' % key
order = '%s%s' % (operator, key)
order_by.append(order)
if order_by:
qs = qs.order_by(*order_by, nulls_last=True)
return qs
def findSequences(request):
'''
takes {
query: ...
itemsQuery: ...
}
one of your conditions has to be key: 'mode', value: [shape,color], operator: '=='
returns {
items: [object]
}
'''
data = json.loads(request.POST['data'])
response = json_response()
query = parse_query(data, request.user)
qs = query['qs']
if 'keys' in data:
qs = order_query(qs, query['sort'])
qs = qs[query['range'][0]:query['range'][1]]
response['data']['items'] = [p.json(data['keys'], request.user) for p in qs]
elif 'position' in query:
qs = order_query(qs, query['sort'])
ids = [i['public_id'] for i in qs.values('public_id')]
data['conditions'] = data['conditions'] + {
'value': data['position'],
'key': query['sort'][0]['key'],
'operator': '^'
}
query = parse_query(data, request.user)
qs = order_query(query['qs'], query['sort'])
if qs.count() > 0:
response['data']['position'] = utils.get_positions(ids, [qs[0].itemId])[0]
elif 'positions' in data:
qs = order_query(qs, query['sort'])
ids = [i['public_id'] for i in qs.values('public_id')]
response['data']['positions'] = utils.get_positions(ids, data['positions'])
else:
response['data']['items'] = qs.count()
return render_to_json_response(response)
actions.register(findSequences)
def getSequence(request):
'''
takes {
id
mode
position
}
returns {
id
mode
in
out
}
'''
data = json.loads(request.POST['data'])
response = json_response()
position = float('%0.03f' % data['position'])
i = Item.objects.get(itemId=data['id'])
qs = models.Sequence.objects.filter(
sort_id=i.sort.pk,
mode=models.Sequence.MODE[data['mode']],
start__lte=position,
end__gt=position
).order_by('start', 'end')
for sequence in qs:
response['data'] = sequence.json()
break
return render_to_json_response(response)
actions.register(getSequence)