gistfile1.py

class SearchableBaseModel(BaseModel):
    """
    Subclasses of this are required to implement:
        searchable_fields
            A list of fields to do general search on, used for
            ordering results as well.
    """
    _aggregate_searchable_field = models.TextField(blank=True, null=True, editable=False, db_index=True)
    searchable_fields = []

    class Meta:
        abstract = True

    @classmethod
    def search(cls, query):
        if not query or len(query.strip()) == 0:
            return cls.objects.all()
        else:
            queries = query.strip().split(" ")
            return cls.objects.filter(reduce(lambda t, q: t & Q(_aggregate_searchable_field__icontains=q), queries, Q()))

    def _calclate_aggregate_searchable_field(self):
        try:
            s = self.__unicode__()
        except:
            s = ''
        for attr_string in self.searchable_fields:
            try:
                s += ';' + eval('self.%s' % (attr_string))
            except:
                pass
        return s


    def save(self, *args, **kwargs):
        if self.id is None:
            self._aggregate_searchable_field = ''
            super(SearchableBaseModel, self).save(*args, **kwargs)
            if 'force_insert' in kwargs:
                del kwargs['force_insert']
        self._aggregate_searchable_field = self._calclate_aggregate_searchable_field()
        super(SearchableBaseModel, self).save(*args, **kwargs)