mikebridge commented on code in PR #45543:
URL: https://github.com/apache/superset/pull/45543#discussion_r4354178299
##########
superset/daos/dashboard.py:
##########
@@ -646,20 +678,23 @@ def set_dash_metadata( # noqa: C901
# documented restore-reattach contract) and writing
# ``uuid: None`` into its position slot via ``uuid_map`` below.
#
- # The bypass must be session-scoped and cover the ASSIGNMENT,
- # not just the resolution query: assigning to
+ # The bypass must also cover the ASSIGNMENT: assigning to
# ``dashboard.slices`` makes the unit of work diff the new
- # collection against the existing one, which it lazy-loads at
- # that moment. A filtered baseline load would exclude the
- # trashed member, so the diff would treat it as net-new and
- # INSERT a ``dashboard_slices`` row that still exists (soft
- # delete never removes junction rows) — an IntegrityError on
- # the composite primary key on every save of a dashboard
- # containing a trashed chart.
+ # collection against the existing one. A baseline missing the
+ # trashed member makes the diff treat it as net-new and INSERT a
+ # ``dashboard_slices`` row that still exists (soft delete never
+ # removes junction rows), an IntegrityError on the composite
+ # primary key on every save of a dashboard containing a trashed
+ # chart. Lazy-loading the baseline inside the bypass is not
+ # enough: a dashboard loaded through a query carries the
+ # visibility filter into its own lazy loads. Read the baseline
+ # from the association table instead and install it as the
+ # committed state.
with skip_visibility_filter(db.session, Slice):
current_slices = (
db.session.query(Slice).filter(Slice.id.in_(slice_ids)).all()
)
+ _install_membership_baseline(dashboard)
dashboard.slices = current_slices
Review Comment:
Thanks for the repro. Saving now keeps existing archived members even when
they have no slot in the submitted layout; omitted live charts are still
detached. The regression test
`test_set_dash_metadata_preserves_archived_member_missing_from_layout`
query-loads the dashboard and covers archived members absent from the stored
layout as well as removal of an existing archived slot. Both cases fail before
the fix and pass with it.
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