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Original file line number | Diff line number | Diff line change |
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# coding: utf-8 | ||
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import datetime | ||
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from django.db import transaction | ||
from formpack.utils.bugfix import repair_file_column_content_in_place | ||
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from kpi.models import Asset, AssetVersion | ||
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def repair_file_column_content_and_save(asset, include_versions=True) -> bool: | ||
""" | ||
Given an `Asset`, repair any damage caused to its `content` and the | ||
`version_content` of all related `AssetVersion`s by | ||
kobotoolbox/formpack#322, which wrongly transformed the `file` column into | ||
`media::file` and included it in the list of translated columns. | ||
Writes only to the `content` (or `version_content`) field for each modified | ||
model instance. | ||
Returns `True` if any change was made | ||
""" | ||
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# When was this bug introduced? See formpack commit | ||
# 443a8e940756976a9f88fb577dbbc53510726536 | ||
BAD_TIME = datetime.datetime( | ||
2024, 4, 30, 15, 27, 2, tzinfo=datetime.timezone.utc | ||
) | ||
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any_change = False | ||
with transaction.atomic(): | ||
# Lock and refetch the latest content to guard against clobbering | ||
# concurrent updates | ||
content = ( | ||
Asset.objects.filter(pk=asset.pk, date_modified__gte=BAD_TIME) | ||
.select_for_update() | ||
.values('content') | ||
.first() | ||
) | ||
if not content: | ||
# This asset was not modified recently enough to be affected by | ||
# this bug | ||
return False | ||
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if repair_file_column_content_in_place(content): | ||
Asset.objects.filter(pk=asset.pk).update(content=content) | ||
any_change = True | ||
# Also update the in-memory asset instance passed to this function | ||
asset.content = content | ||
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if not include_versions: | ||
return any_change | ||
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# Previous versions of the content may need repair, regardless of | ||
# whether or not the current content did | ||
for pk, version_content in ( | ||
asset.asset_versions.filter(date_modified__gte=BAD_TIME) | ||
.select_for_update() | ||
.values_list('pk', 'version_content') | ||
): | ||
if repair_file_column_content_in_place(version_content): | ||
AssetVersion.objects.filter(pk=pk).update( | ||
version_content=version_content | ||
) | ||
any_change = True | ||
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return any_change |
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