52 lines
1.2 KiB
Python
52 lines
1.2 KiB
Python
import base64
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import os
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import magic
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from peewee import TextField
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from playhouse.migrate import (
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SqliteDatabase, SqliteMigrator, migrate
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)
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SCRIPT_DIR = os.path.dirname(__file__)
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def update_picture(picture):
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if not picture:
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return picture
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picture_mime = (
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'data:%s;base64' % magic.from_buffer(picture,
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mime=True)
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)
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return '%s,%s' % (
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picture_mime,
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base64.b64encode(picture).decode('utf-8')
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)
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def run_migration():
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recipes_db = SqliteDatabase(os.path.join(SCRIPT_DIR, '../recipes.db'))
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migrator = SqliteMigrator(recipes_db)
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new_picture_field = TextField(null=True)
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updated_pictures = [
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(recipe_id, update_picture(picture))
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for (recipe_id, picture) in recipes_db.execute_sql(
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'SELECT id, picture FROM recipe'
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)
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]
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migrate(
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migrator.drop_column('recipe', 'picture'),
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migrator.add_column('recipe', 'picture', new_picture_field),
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)
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for (recipe_id, picture) in updated_pictures:
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if picture:
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recipes_db.execute_sql('UPDATE recipe SET picture=? WHERE id=?',
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(picture, recipe_id))
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if __name__ == "__main__":
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run_migration()
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