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This commit is contained in:
Mouse Reeve
2021-03-08 08:49:10 -08:00
parent a07f955781
commit 70296e760b
198 changed files with 10239 additions and 8572 deletions
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58
bookwyrm/management/commands/deduplicate_book_data.py
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@ -1,26 +1,20 @@
''' PROCEED WITH CAUTION: uses deduplication fields to permanently
merge book data objects '''
""" PROCEED WITH CAUTION: uses deduplication fields to permanently
merge book data objects """
from django.core.management.base import BaseCommand
from django.db.models import Count
from bookwyrm import models
def update_related(canonical, obj):
''' update all the models with fk to the object being removed '''
""" update all the models with fk to the object being removed """
# move related models to canonical
related_models = [
(r.remote_field.name, r.related_model) for r in \
canonical._meta.related_objects]
(r.remote_field.name, r.related_model) for r in canonical._meta.related_objects
]
for (related_field, related_model) in related_models:
related_objs = related_model.objects.filter(
**{related_field: obj})
related_objs = related_model.objects.filter(**{related_field: obj})
for related_obj in related_objs:
print(
'replacing in',
related_model.__name__,
related_field,
related_obj.id
)
print("replacing in", related_model.__name__, related_field, related_obj.id)
try:
setattr(related_obj, related_field, canonical)
related_obj.save()
@ -30,40 +24,41 @@ def update_related(canonical, obj):
def copy_data(canonical, obj):
''' try to get the most data possible '''
""" try to get the most data possible """
for data_field in obj._meta.get_fields():
if not hasattr(data_field, 'activitypub_field'):
if not hasattr(data_field, "activitypub_field"):
continue
data_value = getattr(obj, data_field.name)
if not data_value:
continue
if not getattr(canonical, data_field.name):
print('setting data field', data_field.name, data_value)
print("setting data field", data_field.name, data_value)
setattr(canonical, data_field.name, data_value)
canonical.save()
def dedupe_model(model):
''' combine duplicate editions and update related models '''
""" combine duplicate editions and update related models """
fields = model._meta.get_fields()
dedupe_fields = [f for f in fields if \
hasattr(f, 'deduplication_field') and f.deduplication_field]
dedupe_fields = [
f for f in fields if hasattr(f, "deduplication_field") and f.deduplication_field
]
for field in dedupe_fields:
dupes = model.objects.values(field.name).annotate(
Count(field.name)
).filter(**{'%s__count__gt' % field.name: 1})
dupes = (
model.objects.values(field.name)
.annotate(Count(field.name))
.filter(**{"%s__count__gt" % field.name: 1})
)
for dupe in dupes:
value = dupe[field.name]
if not value or value == '':
if not value or value == "":
continue
print('----------')
print("----------")
print(dupe)
objs = model.objects.filter(
**{field.name: value}
).order_by('id')
objs = model.objects.filter(**{field.name: value}).order_by("id")
canonical = objs.first()
print('keeping', canonical.remote_id)
print("keeping", canonical.remote_id)
for obj in objs[1:]:
print(obj.remote_id)
copy_data(canonical, obj)
@ -73,11 +68,12 @@ def dedupe_model(model):
class Command(BaseCommand):
''' dedplucate allllll the book data models '''
help = 'merges duplicate book data'
""" dedplucate allllll the book data models """
help = "merges duplicate book data"
# pylint: disable=no-self-use,unused-argument
def handle(self, *args, **options):
''' run deudplications '''
""" run deudplications """
dedupe_model(models.Edition)
dedupe_model(models.Work)
dedupe_model(models.Author)