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Use select_related() and resultant cached relational fields to speed up Colleciton.serialize().

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This commit is contained in:
Tyson Clugg 2015-09-25 11:30:48 +10:00
parent 33052f4835
commit f15efc0930
1 changed files with 4 additions and 2 deletions
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6
dddp/api.py
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@ -404,9 +404,11 @@ class Collection(APIMixin):
for field in meta.local_fields:
rel = getattr(field, 'rel', None)
if rel:
# use field value which should set by select_related()
fields[field.column] = get_meteor_id(
rel.to, fields.pop(field.name),
getattr(obj, field.name),
)
fields.pop(field.name)
elif isinstance(field, django.contrib.postgres.fields.ArrayField):
fields[field.name] = field.to_python(fields.pop(field.name))
elif (
@ -642,7 +644,7 @@ class DDP(APIMixin):
meteor_ids = get_meteor_ids(
qs.model, qs.values_list('pk', flat=True),
)
for obj in qs:
for obj in qs.select_related():
payload = col.obj_change_as_msg(obj, ADDED, meteor_ids)
this.send(payload)
if not silent: