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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.
23 lines
520 B
Python
23 lines
520 B
Python
"""
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Revision ID: 0169_hidden_templates_nullable
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Revises: 0168_hidden_templates
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Create Date: 2018-02-21 14:05:04.448977
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"""
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from alembic import op
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revision = '0169_hidden_templates_nullable'
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down_revision = '0168_hidden_templates'
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def upgrade():
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op.alter_column('templates', 'hidden', nullable=True)
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op.alter_column('templates_history', 'hidden', nullable=True)
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def downgrade():
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op.alter_column('templates', 'hidden', nullable=False)
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op.alter_column('templates_history', 'hidden', nullable=False)
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