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notifications-api/migrations/versions/0169_hidden_templates_nullable.py

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Set Template.hidden as nullable before the new app code gets released Since the application code gets released after the migration setting a new Template field as non-nullable prevents new templates from being created by the existing application instances. This splits the migration to set fields as nullable first and then update existing records once the application code has been released. 0168 is modified not to run UPDATE query or set non-nullable flag in staging and production. 0169 is added to rollback preview.
2018-02-26 10:41:22 +00:00
"""
Revision ID: 0169_hidden_templates_nullable
Revises: 0168_hidden_templates
Create Date: 2018-02-21 14:05:04.448977
"""
reformat up to latest version of black
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Set Template.hidden as nullable before the new app code gets released Since the application code gets released after the migration setting a new Template field as non-nullable prevents new templates from being created by the existing application instances. This splits the migration to set fields as nullable first and then update existing records once the application code has been released. 0168 is modified not to run UPDATE query or set non-nullable flag in staging and production. 0169 is added to rollback preview.
2018-02-26 10:41:22 +00:00
from alembic import op
reformat
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revision = "0169_hidden_templates_nullable"
down_revision = "0168_hidden_templates"
Set Template.hidden as nullable before the new app code gets released Since the application code gets released after the migration setting a new Template field as non-nullable prevents new templates from being created by the existing application instances. This splits the migration to set fields as nullable first and then update existing records once the application code has been released. 0168 is modified not to run UPDATE query or set non-nullable flag in staging and production. 0169 is added to rollback preview.
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def upgrade():
reformat
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op.alter_column("templates", "hidden", nullable=True)
op.alter_column("templates_history", "hidden", nullable=True)
Set Template.hidden as nullable before the new app code gets released Since the application code gets released after the migration setting a new Template field as non-nullable prevents new templates from being created by the existing application instances. This splits the migration to set fields as nullable first and then update existing records once the application code has been released. 0168 is modified not to run UPDATE query or set non-nullable flag in staging and production. 0169 is added to rollback preview.
2018-02-26 10:41:22 +00:00
def downgrade():
reformat
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op.alter_column("templates", "hidden", nullable=False)
op.alter_column("templates_history", "hidden", nullable=False)
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