Undeclared attribute type for enum 'sync_type'. Enums must be backed by a database column or declared with an explicit type via `attribute`

Product Support

AI-generated summary

Users are encountering an error during Discourse container rebuild: “Undeclared attribute type for enum ‘sync_type’. Enums must be backed by a database column or declared with an explicit type via attribute.” jeffbyrnes traced the issue to the angusmcleod/discourse-events plugin, which was listed twice in hooks.after_code.exec.cmd. After disabling the plugin and rebuilding, the error resolved, suggesting the plugin is outdated or incompatible. pfaffman noted the error may stem from a plugin since sync_type isn’t in Discourse core. They briefly discussed importing past events from the old plugin, referencing an unmerged pull request jeffbyrnes, though pfaffman later clarified they may have confused it with another plugin. saulshanabrook confirmed experiencing the same issue, and jeffbyrnes advised disabling the problematic plugin as the fix.

1

Hey folks, I recently tried to rebuild my Discourse container after the web UI update functionality failed, and ran into this error:

Undeclared attribute type for enum 'sync_type'. Enums must be backed by a database column or declared with an explicit type via `attribute`.

Full output around that error below:

I, [2024-09-16T15:58:43.855180 #1]  INFO -- : > exec chpst -u redis -U redis /usr/bin/redis-server /etc/redis/redis.conf
I, [2024-09-16T15:58:43.857371 #1]  INFO -- : > sleep 10
1608:C 16 Sep 2024 15:58:43.867 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
1608:C 16 Sep 2024 15:58:43.867 # Redis version=7.0.7, bits=64, commit=00000000, modified=0, pid=1608, just started
1608:C 16 Sep 2024 15:58:43.868 # Configuration loaded
1608:M 16 Sep 2024 15:58:43.868 * monotonic clock: POSIX clock_gettime
1608:M 16 Sep 2024 15:58:43.869 # Warning: Could not create server TCP listening socket *:6379: bind: Address already in use
1608:M 16 Sep 2024 15:58:43.869 # Failed listening on port 6379 (TCP), aborting.
I, [2024-09-16T15:58:53.860226 #1]  INFO -- :
I, [2024-09-16T15:58:53.860714 #1]  INFO -- : > cd /var/www/discourse && su discourse -c 'bundle exec rake db:migrate'
rake aborted!
StandardError: An error has occurred, this and all later migrations canceled: (StandardError)

Undeclared attribute type for enum 'sync_type'. Enums must be backed by a database column or declared with an explicit type via `attribute`.
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/enum.rb:250:in `block in _enum'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/attributes.rb:225:in `block in attribute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/attributes.rb:266:in `block in load_schema!'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/attributes.rb:265:in `each'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/attributes.rb:265:in `load_schema!'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/encryption/encryptable_record.rb:127:in `load_schema!'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/model_schema.rb:567:in `block in load_schema'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/model_schema.rb:564:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/model_schema.rb:564:in `load_schema'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/model_schema.rb:445:in `attribute_types'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/querying.rb:69:in `block in _load_from_sql'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/querying.rb:69:in `reject'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/querying.rb:69:in `_load_from_sql'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:1020:in `instantiate_records'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:975:in `block in exec_queries'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:1028:in `skip_query_cache_if_necessary'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:966:in `exec_queries'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:752:in `load'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:264:in `records'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation/delegation.rb:100:in `each'
/var/www/discourse/plugins/discourse-events/db/migrate/20240815072133_move_source_datetimes_to_filters.rb:5:in `up'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:989:in `public_send'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:989:in `exec_migration'
/var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in `block in exec_migration'
/var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in `exec_migration'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:970:in `block (2 levels) in migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:969:in `block in migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:227:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:968:in `migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1178:in `migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1529:in `block in execute_migration_in_transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/connection_adapters/abstract/transaction.rb:535:in `block in within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.1.4/lib/active_support/concurrency/null_lock.rb:9:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/connection_adapters/abstract/transaction.rb:532:in `within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/connection_adapters/abstract/database_statements.rb:344:in `transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1580:in `ddl_transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1528:in `execute_migration_in_transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1503:in `each'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1503:in `migrate_without_lock'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1448:in `block in migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1600:in `with_advisory_lock'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1448:in `migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1274:in `up'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1249:in `migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/tasks/database_tasks.rb:251:in `migrate'
/var/www/discourse/lib/tasks/db.rake:259:in `block (2 levels) in <main>'
/var/www/discourse/lib/distributed_mutex.rb:53:in `block in synchronize'
/var/www/discourse/lib/distributed_mutex.rb:49:in `synchronize'
/var/www/discourse/lib/distributed_mutex.rb:49:in `synchronize'
/var/www/discourse/lib/distributed_mutex.rb:34:in `synchronize'
/var/www/discourse/lib/tasks/db.rake:234:in `block in <main>'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.2.1/exe/rake:27:in `<top (required)>'
/usr/local/bin/bundle:25:in `load'
/usr/local/bin/bundle:25:in `<main>'

Caused by:
Undeclared attribute type for enum 'sync_type'. Enums must be backed by a database column or declared with an explicit type via `attribute`.
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/enum.rb:250:in `block in _enum'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/attributes.rb:225:in `block in attribute'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/attributes.rb:266:in `block in load_schema!'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/attributes.rb:265:in `each'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/attributes.rb:265:in `load_schema!'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/encryption/encryptable_record.rb:127:in `load_schema!'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/model_schema.rb:567:in `block in load_schema'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/model_schema.rb:564:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/model_schema.rb:564:in `load_schema'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/model_schema.rb:445:in `attribute_types'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/querying.rb:69:in `block in _load_from_sql'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/querying.rb:69:in `reject'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/querying.rb:69:in `_load_from_sql'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:1020:in `instantiate_records'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:975:in `block in exec_queries'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:1028:in `skip_query_cache_if_necessary'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:966:in `exec_queries'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:752:in `load'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation.rb:264:in `records'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/relation/delegation.rb:100:in `each'
/var/www/discourse/plugins/discourse-events/db/migrate/20240815072133_move_source_datetimes_to_filters.rb:5:in `up'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:989:in `public_send'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:989:in `exec_migration'
/var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in `block in exec_migration'
/var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in `exec_migration'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:970:in `block (2 levels) in migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:969:in `block in migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:227:in `with_connection'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:968:in `migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1178:in `migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1529:in `block in execute_migration_in_transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/connection_adapters/abstract/transaction.rb:535:in `block in within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activesupport-7.1.4/lib/active_support/concurrency/null_lock.rb:9:in `synchronize'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/connection_adapters/abstract/transaction.rb:532:in `within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/connection_adapters/abstract/database_statements.rb:344:in `transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1580:in `ddl_transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1528:in `execute_migration_in_transaction'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1503:in `each'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1503:in `migrate_without_lock'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1448:in `block in migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1600:in `with_advisory_lock'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1448:in `migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1274:in `up'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/migration.rb:1249:in `migrate'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/activerecord-7.1.4/lib/active_record/tasks/database_tasks.rb:251:in `migrate'
/var/www/discourse/lib/tasks/db.rake:259:in `block (2 levels) in <main>'
/var/www/discourse/lib/distributed_mutex.rb:53:in `block in synchronize'
/var/www/discourse/lib/distributed_mutex.rb:49:in `synchronize'
/var/www/discourse/lib/distributed_mutex.rb:49:in `synchronize'
/var/www/discourse/lib/distributed_mutex.rb:34:in `synchronize'
/var/www/discourse/lib/tasks/db.rake:234:in `block in <main>'
/var/www/discourse/vendor/bundle/ruby/3.3.0/gems/rake-13.2.1/exe/rake:27:in `<top (required)>'
/usr/local/bin/bundle:25:in `load'
/usr/local/bin/bundle:25:in `<main>'
Tasks: TOP => db:migrate
(See full trace by running task with --trace)

I tried disabling all of the plugin installs before attempting that the rebuild and this error persists.

2

I’m getting a similar error on a site when it tries to rebake images. MIne doesn’t mention sync_type however, and I don’t see sync_type in the Discourse source. Maybe your error is coming from a plugin?

3

Thanks @pfaffman, yeah, it was coming from the angusmcleod/discourse-events plugin. I had it in the hooks.after_code.exec.cmd array twice, but seems there’s some other issue with it.

I’ll play with it some more when I get a chance, and file a bug on the GitHub repo for that plugin. Thankfully, we switched to the official Events plugin a while back, so this is just for our past events.

4

I’m pretty sure that there’s a rake task to import them.

5

Yeah, someone wrote one in a pull request that wasn’t accepted

Or are you saying that the official plugin has a rake task to do that importing?

6

I thought it did, but may be remembering some other plugin.

7

Did you figure out how to upgrade your site with this error? I am also getting it.

8

I did, yes. I had to disable the 3rd party discourse-events plugin & rebuild the container.

Once I did that, the error went away, so I suspect it’s something out-of-date with that plugin.