def _pretty_name(self, ids, langs):
"""
This complicated method greatly speeds up getting the names of specified parent ids in order.
It returns a dict of names in order of importance (admin_level).
"""
# We save each place name with its admin level (10 to 1).
# The OSM admin level is sometimes set high for simple Nodes; we do not want that, so we define our own admin_level
pp = {}
al = 10
names = [(n.place_id, n.type_id, n.name, n.lang) for n in PlaceName.objects.prefetch_related('lang').only().filter(place__id__in=ids)]
for i in ids:
best = False
for n in [n for n in names if n[0] == int(i)]:
if n[3] in langs:
pp[al] = n[2]
break
elif n[1] == get_type_id('name'):
pp[al] = n[2]
best = True
elif not best:
pp[al] = n[2]
al -= 1
return pp
def _iter_country(self):
if self.host_country is not None:
# First of all, we try and do the search as if we're in the host country. This is to
# catch cases where the name (possibly abbreviated) of an administrative area of the
# country appears to be the same as another countries name. e.g. California as CA also
# looks like CA for Canada.
yield self.host_country, len(self.split) - 1
# Then see if the user has specified an ISO 2 code of a country name.
if len(self.split[-1]) == 2:
iso2_cnd = self.split[-1]
if iso2_cnd == "uk":
# As a bizarre special case, the ISO 2 code for the UK is GB, but people might
# reasonably be expected to specify "UK" so we hack that in.
iso2_cnd = "gb"
country = Country.objects.filter(iso3166_2__iexact=iso2_cnd)
if country.exists():
yield country[0], len(self.split) - 2
# Finally try and match a full country name. Note that we're agnostic over the language used to
# specify the country name.
sub_hash = _hash_wd(self.split[-1])
norm_hash = _hash_wd(unidecode(self.split[-1]))
country_list = PlaceName.objects.prefetch_related('place').filter(Q(name_hash=sub_hash) | Q(name_hash=norm_hash), Q(type__id=get_type_id("country")))
done = set()
for cnd in country_list:
new_i = _match_end_split([unidecode(x) for x in self.split], len(self.split) - 1, unidecode(cnd.name))
country = cnd.place.country
done_key = (country, new_i)
if done_key in done:
continue
if new_i is not None:
yield country, new_i
done.add(done_key)
# Apparently none of the above was a good enough match...
yield None, len(self.split) - 1
