kopia lustrzana https://dev.funkwhale.audio/funkwhale/funkwhale
65 wiersze
2.0 KiB
Python
65 wiersze
2.0 KiB
Python
![]() |
from django.db import models
|
||
|
|
||
|
from funkwhale_api.common import fields
|
||
|
from funkwhale_api.favorites.models import TrackFavorite
|
||
|
from funkwhale_api.history.models import Listening
|
||
|
|
||
|
|
||
|
def combined_recent(limit, **kwargs):
|
||
|
datetime_field = kwargs.pop('datetime_field', 'creation_date')
|
||
|
source_querysets = {
|
||
|
qs.model._meta.label: qs for qs in kwargs.pop('querysets')
|
||
|
}
|
||
|
querysets = {
|
||
|
k: qs.annotate(
|
||
|
__type=models.Value(
|
||
|
qs.model._meta.label, output_field=models.CharField()
|
||
|
)
|
||
|
).values('pk', datetime_field, '__type')
|
||
|
for k, qs in source_querysets.items()
|
||
|
}
|
||
|
_qs_list = list(querysets.values())
|
||
|
union_qs = _qs_list[0].union(*_qs_list[1:])
|
||
|
records = []
|
||
|
for row in union_qs.order_by('-{}'.format(datetime_field))[:limit]:
|
||
|
records.append({
|
||
|
'type': row['__type'],
|
||
|
'when': row[datetime_field],
|
||
|
'pk': row['pk']
|
||
|
})
|
||
|
# Now we bulk-load each object type in turn
|
||
|
to_load = {}
|
||
|
for record in records:
|
||
|
to_load.setdefault(record['type'], []).append(record['pk'])
|
||
|
fetched = {}
|
||
|
|
||
|
for key, pks in to_load.items():
|
||
|
for item in source_querysets[key].filter(pk__in=pks):
|
||
|
fetched[(key, item.pk)] = item
|
||
|
|
||
|
# Annotate 'records' with loaded objects
|
||
|
for record in records:
|
||
|
record['object'] = fetched[(record['type'], record['pk'])]
|
||
|
return records
|
||
|
|
||
|
|
||
|
def get_activity(user, limit=20):
|
||
|
query = fields.privacy_level_query(
|
||
|
user, lookup_field='user__privacy_level')
|
||
|
querysets = [
|
||
|
Listening.objects.filter(query).select_related(
|
||
|
'track',
|
||
|
'user',
|
||
|
'track__artist',
|
||
|
'track__album__artist',
|
||
|
),
|
||
|
TrackFavorite.objects.filter(query).select_related(
|
||
|
'track',
|
||
|
'user',
|
||
|
'track__artist',
|
||
|
'track__album__artist',
|
||
|
),
|
||
|
]
|
||
|
records = combined_recent(limit=limit, querysets=querysets)
|
||
|
return [r['object'] for r in records]
|