common.py 文件源码

def get_generic_filters(filters):
    """
        Returns `django.db.models.query.QuerySet` filters based on request query filters
    """

    where = [Q()]
    # Generates Django query filter
    if filters.get('where'):
        keys = set(k for k in filters['where'])
        if 'in' in keys:
            for param in filters['where']['in']:
                for key, val in param.iteritems():
                    field = reduce(lambda a, kv: a.replace(*kv), TICKET_FILTER_MAPPING, key)
                    where.append(reduce(operator.or_, [Q(**{field: i}) for i in val]))
        if 'like' in keys:
            like = []
            for param in filters['where']['like']:
                for key, val in param.iteritems():
                    field = reduce(lambda a, kv: a.replace(*kv), TICKET_FILTER_MAPPING, key)
                    field = field + '__icontains'
                    like.append(Q(**{field: val[0]}))
            if len(like):
                where.append(reduce(operator.or_, like))

    return where