Thank you.
Inspired by the latest migration I amended the historical migrations from something like…
import datetime
from django.db import migrations, models
from django.utils.timezone import utc
class Migration(migrations.Migration):
...
operations = [
migrations.AlterField(
model_name='ad',
name='expirationTime',
# note that the following DateTimeField has a fixed time as default
field=models.DateTimeField(default=datetime.datetime(2022, 3, 12, 7, 56, 7, 340439, tzinfo=utc), verbose_name='expiration time (of ad)'),
),
]
to something like…
import codermatch.models
from django.db import migrations, models
class Migration(migrations.Migration):
...
operations = [
migrations.AlterField(
model_name='ad',
name='expirationTime',
# note that the following DateTimeField has a callable function which provides a "dynamic" time - as recommended above by Adam
field=models.DateTimeField(default=codermatch.models.Ad.in30Days, verbose_name='expiration time (of ad)'),
),
]
Besides I cleared up the migrations by deleting several trivial ones - for example those ones which always only altered the expirationTime to the current time.
new error: django.db.utils.DataError: (1265, “Data truncated for column ‘projectStartDate’ at row 50”)
Now I have a new error when calling py manage.py migrate:
(venv) PS C:\Users\Name\codingprojects\CoderMatching\codermatching> py manage.py migrate
Operations to perform:
Apply all migrations: admin, auth, codermatch, contenttypes, sessions
Running migrations:
Applying codermatch.0034_alter_ad_expirationtime... OK
Applying codermatch.0042_alter_ad_expirationtime... OK
Applying codermatch.0043_alter_ad_projectstartdate...Traceback (most recent call last):
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\backends\utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\backends\mysql\base.py", line 73, in execute
return self.cursor.execute(query, args)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\MySQLdb\cursors.py", line 206, in execute
res = self._query(query)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\MySQLdb\cursors.py", line 319, in _query
db.query(q)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\MySQLdb\connections.py", line 254, in query
_mysql.connection.query(self, query)
MySQLdb._exceptions.DataError: (1265, "Data truncated for column 'projectStartDate' at row 50")
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:\Users\Name\codingprojects\CoderMatching\codermatching\manage.py", line 22, in <module>
main()
File "C:\Users\Name\codingprojects\CoderMatching\codermatching\manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\core\management\__init__.py", line 425, in execute_from_command_line
utility.execute()
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\core\management\__init__.py", line 419, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\core\management\base.py", line 373, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\core\management\base.py", line 417, in execute
output = self.handle(*args, **options)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\core\management\base.py", line 90, in wrapped
res = handle_func(*args, **kwargs)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\core\management\commands\migrate.py", line 253, in handle
post_migrate_state = executor.migrate(
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\migrations\executor.py", line 126, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\migrations\executor.py", line 156, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\migrations\executor.py", line 236, in apply_migration
state = migration.apply(state, schema_editor)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\migrations\migration.py", line 125, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\migrations\operations\fields.py", line 225, in database_forwards
schema_editor.alter_field(from_model, from_field, to_field)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\backends\base\schema.py", line 618, in alter_field
self._alter_field(model, old_field, new_field, old_type, new_type,
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\backends\base\schema.py", line 775, in _alter_field
self.execute(
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\backends\base\schema.py", line 151, in execute
cursor.execute(sql, params)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\backends\utils.py", line 99, in execute
return super().execute(sql, params)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\backends\utils.py", line 67, in execute
return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\backends\utils.py", line 76, in _execute_with_wrappers
return executor(sql, params, many, context)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\backends\utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\utils.py", line 90, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\backends\utils.py", line 85, in _execute
return self.cursor.execute(sql, params)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\django\db\backends\mysql\base.py", line 73, in execute
return self.cursor.execute(query, args)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\MySQLdb\cursors.py", line 206, in execute
res = self._query(query)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\MySQLdb\cursors.py", line 319, in _query
db.query(q)
File "C:\Users\Name\codingprojects\CoderMatching\venv\lib\site-packages\MySQLdb\connections.py", line 254, in query
_mysql.connection.query(self, query)
django.db.utils.DataError: (1265, "Data truncated for column 'projectStartDate' at row 50")
Since I’ve already marked a solution for the issue of the thread, the forum adviced me to open a new thread.
Shall I open a new thread or does this still fit in here?