def get_species(self, user=None, limit=None):
"""
If user argument is provided, seen=True flag will be added to all
species which have been seen by that user.
"""
from zoo.trips.models import Trip, Sighting
if user and not user.is_anonymous():
seen_species = Trip.get_passport(user).seen_species
else:
seen_species = []
by_count = {}
for sighting in Sighting.objects.filter(
place=self, species__isnull=False
).select_related('species'):
species = sighting.species
by_count[species] = by_count.get(species, 0) + 1
if by_count.values():
max_species = max(by_count.values())
species_list = by_count.keys()
for species in species_list:
species.count = by_count[species]
species.quad = int(4 * (by_count[species] - 1.0) / max_species)
if species in seen_species:
species.seen = True
species_list.sort(key=lambda s: s.common_name)
if limit:
species_list = species_list[:limit]
return species_list
def passport(self):
return Trip.get_passport(self.user)