A task could end up with more than one task_positions row for the same
(task_id, project_view_id): rapid/concurrent creation raced the
check-then-insert paths, and the create path could insert a position that
a triggered RecalculateTaskPositions had already persisted for the new
task. The table had no unique constraint, so the duplicates were stored
silently (#2844).
In the table view this made the LEFT JOIN on task_positions emit the task
twice; getTasksForProjects enriched only the map entry, so the duplicate
slice row kept an empty identifier and rendered as "#N" instead of
"PREFIX-N" (#2725).
- Add a unique index on task_positions(task_id, project_view_id) via a
dedup migration (mirrors the task_buckets fix in 20250624092830) plus the
unique(task_view) struct tag so fresh installs get it too.
- Harden the create path: only queue a position insert when one does not
already exist for the task+view, and dedupe within the batch.
- Dedupe the task slice returned by getTasksForProjects by id, returning
the enriched entry, so duplicate position rows can never surface a task
twice or with a missing identifier.
Fixes#2844Fixes#2725
BREAKING CHANGE: The bucket id of the task model is now only used internally and will not trigger a change in buckets when updating the task.
This resolves a problem where the task update routine needs to know the view context it is in. Because that's not really what it should be used for, the extra endpoint takes all required parameters and handles the complexity of actually updating the bucket.
This fixes a bug where it was impossible to move a task around between buckets of a saved filter view. In that case, the view of the bucket and the project the task was in would be different, hence the update failed.
BREAKING CHANGE: the position of tasks now can't be updated anymore via the task update endpoint. Instead, there is a new endpoint which takes the project view into account as well.
BREAKING CHANGE: tasks in their bucket are now only retrievable via their view. The /project/:id/buckets endpoint now only returns the buckets for that project, which is more in line with the other endpoints