60 lines
1.9 KiB
Python
60 lines
1.9 KiB
Python
# -*- coding: utf-8 -*-
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#does not work in sqlite
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#from sqlalchemy.sql.expression import nullslast
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from sqlalchemy.sql.expression import text
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from . import models
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import settings
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import utils
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import logging
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logger = logging.getLogger(__name__)
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def parse(data):
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query = {}
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query['range'] = [0, 100]
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if 'group' not in data:
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query['sort'] = [{'key': 'title', 'operator': '+'}]
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for key in ('keys', 'group', 'list', 'range', 'sort', 'query'):
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if key in data:
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query[key] = data[key]
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if [r for r in query['range'] if not isinstance(r, int)]:
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logger.error('range must be 2 integers! got this: %s', query['range'])
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query['range'] = [0, 0]
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query['qs'] = models.Item.find(data)
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if 'group' not in query:
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query['qs'] = order(query['qs'], query['sort'])
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return query
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def order(qs, sort, prefix='sort.'):
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order_by = []
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if len(sort) == 1:
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additional_sort = settings.config['user']['ui']['listSort']
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key = utils.get_by_id(models.Item.item_keys, sort[0]['key'])
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for s in key.get('additionalSort', additional_sort):
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if s['key'] not in [e['key'] for e in sort]:
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sort.append(s)
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for e in sort:
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operator = e['operator']
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if operator != '-':
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operator = ''
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else:
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operator = ' DESC'
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key = {}.get(e['key'], e['key'])
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if key not in ('fixme', ):
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key = "%s%s" % (prefix, key)
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order = '%s%s' % (key, operator)
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order_by.append(order)
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if order_by:
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#nulllast not supported in sqlite, use IS NULL hack instead
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#order_by = map(nullslast, order_by)
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_order_by = []
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for order in order_by:
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nulls = "%s IS NULL" % order.split(' ')[0]
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_order_by.append(text(nulls))
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_order_by.append(text(order))
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order_by = _order_by
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qs = qs.join(models.Sort).order_by(*order_by)
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return qs
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