s3lph/matemat
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Yet another schema change: consumptions now contains the product name rather than the product id.

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This commit is contained in:
s3lph 2018-09-01 02:54:55 +02:00
parent fec9c3d7ac
commit ff0c13d367
4 changed files with 41 additions and 11 deletions
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6
matemat/db/facade.py
View file

@ -472,10 +472,10 @@ class MatematDatabase(object):
'old_balance': user.balance
})
c.execute('''
INSERT INTO consumptions (ta_id, product_id)
VALUES (last_insert_rowid(), :product_id)
INSERT INTO consumptions (ta_id, product)
VALUES (last_insert_rowid(), :product)
''', {
'product_id': product.id
'product': product.name
})
# Subtract the price from the user's account balance.
c.execute('''

19
matemat/db/migrations.py
View file

@ -135,6 +135,25 @@ def migrate_schema_2_to_3(c: sqlite3.Cursor):
c.execute('DROP TABLE transactions')
c.execute('ALTER TABLE transactions_new RENAME TO transactions')
# Change consumptions table
c.execute('''
CREATE TABLE consumptions_new (
ta_id INTEGER PRIMARY KEY,
product TEXT NOT NULL,
FOREIGN KEY (ta_id) REFERENCES transactions(ta_id)
ON DELETE CASCADE ON UPDATE CASCADE
)
''')
c.execute('''
INSERT INTO consumptions_new (ta_id, product)
SELECT c.ta_id, COALESCE(p.name, '<unknown>')
FROM consumptions as c
LEFT JOIN products as p
ON c.product_id = p.product_id
''')
c.execute('DROP TABLE consumptions')
c.execute('ALTER TABLE consumptions_new RENAME TO consumptions')
# Change modifications table
c.execute('''
CREATE TABLE modifications_new (

6
matemat/db/schemas.py
View file

@ -140,11 +140,9 @@ SCHEMAS[3] = [
'''
CREATE TABLE consumptions ( -- transactions involving buying a product
ta_id INTEGER PRIMARY KEY,
product_id INTEGER DEFAULT NULL,
product TEXT NOT NULL,
FOREIGN KEY (ta_id) REFERENCES transactions(ta_id)
ON DELETE CASCADE ON UPDATE CASCADE,
FOREIGN KEY (product_id) REFERENCES products(product_id)
ON DELETE SET NULL ON UPDATE CASCADE
ON DELETE CASCADE ON UPDATE CASCADE
);
''',
'''

21
matemat/db/test/test_migrations.py
View file

@ -52,7 +52,10 @@ class TestMigrations(unittest.TestCase):
cursor.execute('PRAGMA user_version = 1')
# Kick off the migration
schema_version = self.db.SCHEMA_VERSION
self.db.SCHEMA_VERSION = 2
self.db._setup()
self.db.SCHEMA_VERSION = schema_version
# Test whether the new tables were created
cursor.execute('PRAGMA table_info(transactions)')
@ -136,25 +139,29 @@ class TestMigrations(unittest.TestCase):
cursor.execute('''
INSERT INTO products VALUES
(1, 'Club Mate', 42, 200, 250),
(2, 'Flora Power Mate (1/4l)', 10, 100, 150)
(2, 'Flora Power Mate', 10, 100, 150)
''')
cursor.execute('''
INSERT INTO transactions VALUES
(1, 1, 4200, 0, 1000), -- deposit
(2, 2, 1337, 0, 1001), -- modification
(3, 3, 1337, 0, 1001), -- modification with deleted agent
(4, 2, 200, 1337, 1002) -- consumption
(3, 3, 1337, 0, 1002), -- modification with deleted agent
(4, 2, -200, 1337, 1003), -- consumption
(5, 3, -200, 1337, 1004) -- consumption with deleted product
''')
cursor.execute('''INSERT INTO deposits VALUES (1)''')
cursor.execute('''
INSERT INTO modifications VALUES
(2, 1, 'Account migration'),
(3, 42, 'You can''t find out who i am... MUAHAHAHA!!!')''')
cursor.execute('''INSERT INTO consumptions VALUES (4, 2)''')
cursor.execute('''INSERT INTO consumptions VALUES (4, 2), (5, 42)''')
cursor.execute('''PRAGMA user_version = 2''')
# Kick off the migration
schema_version = self.db.SCHEMA_VERSION
self.db.SCHEMA_VERSION = 3
self.db._setup()
self.db.SCHEMA_VERSION = schema_version
# Make sure the receipts table was created
cursor.execute('''SELECT COUNT(receipt_id) FROM receipts''')
@ -165,3 +172,9 @@ class TestMigrations(unittest.TestCase):
self.assertEqual('testadmin', cursor.fetchone()[0])
cursor.execute('''SELECT agent FROM modifications WHERE ta_id = 3''')
self.assertEqual('<unknown>', cursor.fetchone()[0])
# Make sure the consumptions table was changed to contain the product name, or a fallback
cursor.execute('''SELECT product FROM consumptions WHERE ta_id = 4''')
self.assertEqual('Flora Power Mate', cursor.fetchone()[0])
cursor.execute('''SELECT product FROM consumptions WHERE ta_id = 5''')
self.assertEqual('<unknown>', cursor.fetchone()[0])