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On startup, the app now checks if the database schema version matches the code. If there's a mismatch or no version exists, it automatically runs a full data migration before starting. - Add backend/version.py with SCHEMA_VERSION constant - Add backend/migration.py with extracted migration logic - Add SchemaVersion model to track DB version - Add version check functions to database.py - Update app.py lifespan to use check_and_migrate_if_needed() - Simplify migrate_csv_to_db.py to use shared logic Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
23 lines
645 B
Python
23 lines
645 B
Python
"""
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Schema versioning for database migrations.
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HOW TO USE:
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- Bump SCHEMA_VERSION when making changes to database models
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- This triggers an automatic full data reimport on next app startup
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WHEN TO BUMP:
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- Adding/removing columns in models.py
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- Changing column types or constraints
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- Modifying CSV column mappings in schemas.py
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- Any change that requires fresh data import
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"""
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# Current schema version - increment when models change
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SCHEMA_VERSION = 2
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# Changelog for documentation
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SCHEMA_CHANGELOG = {
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1: "Initial schema with School and SchoolResult tables",
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2: "Added pupil absence fields (reading, maths, gps, writing, science)",
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}
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