你好我正在用 django 做一個應用程式，我正在使用 sqlite 我現在想遷移到 postgres 但我遇到了這個錯誤我認為與時間有關但我真的不知道如何解決它。
Applying users.0018_auto_20210911_1322...Traceback (most recent call last):
File "C:\Users\lenovo ideapad\Desktop\callservices\manage.py", line 22, in <module>
main()
File "C:\Users\lenovo ideapad\Desktop\callservices\manage.py", line 18, in main
execute_from_command_line(sys.argv)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\core\management\__init__.py", line 419, in execute_from_command_line
utility.execute()
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\core\management\__init__.py", line 413, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\core\management\base.py",
line 354, in run_from_argv
self.execute(*args, **cmd_options)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\core\management\base.py",
line 398, in execute
output = self.handle(*args, **options)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\core\management\base.py",
line 89, in wrapped
res = handle_func(*args, **kwargs)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\core\management\commands\migrate.py", line 244, in handle
post_migrate_state = executor.migrate(
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\migrations\executor.py", line 117, in migrate
state = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\migrations\executor.py", line 147, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\migrations\executor.py", line 227, in apply_migration
state = migration.apply(state, schema_editor)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\migrations\migration.py", line 126, in apply
operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\migrations\operations\fields.py", line 104, in database_forwards
schema_editor.add_field(
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\backends\base\schema.py", line 490, in add_field
definition, params = self.column_sql(model, field, include_default=True)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\backends\base\schema.py", line 237, in column_sql
default_value = self.effective_default(field)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\backends\base\schema.py", line 324, in effective_default
return field.get_db_prep_save(self._effective_default(field), self.connection)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\models\fields\__init__.py", line 842, in get_db_prep_save
return self.get_db_prep_value(value, connection=connection, prepared=False)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\models\fields\__init__.py", line 2296, in get_db_prep_value
value = self.get_prep_value(value)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\models\fields\__init__.py", line 2291, in get_prep_value
return self.to_python(value)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\db\models\fields\__init__.py", line 2265, in to_python
parsed = parse_time(value)
File "C:\Users\lenovo ideapad\Desktop\callservices\env\lib\site-packages\django\utils\dateparse.py", line
90, in parse_time
match = time_re.match(value)
TypeError: expected string or bytes-like object
這是用戶的完整代碼。0018_auto_20210911_1322我不知道如何解決它但我嘗試了一些東西但不起作用
class Migration(migrations.Migration):
dependencies = [
('users', '0017_alter_profile_conception'),
]
operations = [
migrations.AddField(
model_name='profile',
name='periodfrom',
field=models.TimeField(default=1),
preserve_default=False,
),
migrations.AddField(
model_name='profile',
name='periodto',
field=models.TimeField(default=1),
preserve_default=False,
),
]
uj5u.com熱心網友回復：
您在模型中配置錯誤periodfrom和periodto欄位Profile。改成這樣：
periodfrom = models.TimeField(default=datetime.time(10, 00))
periodto = models.TimeField(default=datetime.time(20, 00))
同時洗掉0018_auto_20210911_1322遷移并makemigrations再次執行。
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標籤：Python 姜戈 PostgreSQL的