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Merge pull request #335 from alphagov/fix-history-data

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Data migration script to fix templates_history.updated_at.
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Rebecca Law
2016-05-20 16:02:23 +01:00
parent a8c79bf80d e0864dfdb5
commit 2b27ca9187
1 changed files with 23 additions and 0 deletions
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migrations/versions/0020_template_history_fix.py Normal file
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"""empty message
Revision ID: 0020_template_history_fix
Revises: 0019_add_job_row_number
Create Date: 2016-05-20 15:15:03.850862
"""
# revision identifiers, used by Alembic.
revision = '0020_template_history_fix'
down_revision = '0019_add_job_row_number'
from alembic import op
import sqlalchemy as sa
def upgrade():
op.get_bind()
op.execute('update templates_history t set updated_at = (select updated_at from templates_history th where t.version = th.version -1 and t.id = th.id and t.version != 1)')
op.execute('update templates_history th set updated_at = (select t.updated_at from templates_history h, templates t where h.id = t.id and h.version = t.version and th.id = h.id) where (th.id, th.version) = (select t.id, t.version from templates t where t.id = th.id and t.version = th.version)')
def downgrade():
pass