Nova Multiselect Filter Laravel Package

Technical Evaluation

Architecture fit

• Nova-only, presentation-layer extension: a subclass of Nova's Filter plus a Vue component rendering the checkbox dropdown. It touches no models, migrations, domain services, jobs, queues, or customer-facing routes.
• That containment is the TPM-relevant fact. Blast radius equals the Nova resource list views that register it, and rollback is a two-line revert plus a composer remove. Nothing persisted, nothing to unwind.
• The genuine architectural dependency is not this package but Nova's semi-private filter/component contract. Adopting it means accepting Nova's upgrade cadence — which the team already does by running Nova — plus a third party's response time on top.
• Position it correctly: an internal operator productivity lever ("time-to-answer," "fewer spreadsheet exports"), never a platform capability or differentiator. Score it against an admin-efficiency KPI, not a product roadmap theme.
• Value is narrow but real: Nova ships single-value filters, so multi-select removes the "pick one, re-run, repeat" loop for status/category/region/plan triage without writing a custom filter per resource.

Integration feasibility

• Low effort, well-bounded: one composer require, one filter class per resource, option-source wiring, and acceptance tests. A competent Laravel developer should integrate and validate in under a day — a single sprint story with no cross-team dependencies.
• Go/no-go gates are environmental and must clear before commitment: installed Nova major, whether the bundled component is Vue 2 or Vue 3 (Nova 4+ is Vue 3 — a stale component is a hard stop), and whether the published composer.json constraint actually accepts the current Nova release.
• Ownership is ambiguous in the sources: Packagist vendor is rcknr while the repository lives under skauk. Confirm which is canonical and whether releases track it — that determines the maintenance posture recorded in the risk register.
• No data migration, no schema change, no backfill. Approval ask is genuinely small; the only real decision is whether to accept a third-party line item for something the team could own outright.

Technical risk

• Upgrade coupling — high. Nova filter internals aren't a stable public contract. A Nova major can break filtering silently or stop the component mounting, and remediation waits on someone else's release schedule. This is the risk to manage.
• Maintainer concentration — medium-high. 26 stars, 0 dependents, effectively one maintainer, no commercial backing, no SLA. Textbook bus-factor-one utility: fine for a scoped pilot, not fine as an unhedged dependency on a business-critical admin panel.
• Behavioral correctness — medium. Multi-select compiles to whereIn-style constraints. Edge cases — empty selection meaning "all" vs. "none," relationship/BelongsTo columns, large option sets, interaction with Nova's remembered filter state — fail as wrong admin data, not as exceptions. These are the costliest defects to detect and the most corrosive to operator trust.
• Security surface — low. No auth, storage, or external I/O; input lands in query-builder constraints behind Nova's existing authorization. Risk is query shape and latency, not injection, assuming bound parameters.
• Build vs. buy — the decisive lever. The whole thing is a few hundred lines of filter class plus a small Vue component. In-house reimplementation is a credible 1–2 day alternative for a team already maintaining Nova customizations, and it eliminates vendor and abandonment risk outright. Carry that as the explicit "no" branch in the decision record.

Key questions

• Which Nova majors are supported, and is the shipped Vue component Vue 3-compatible for Nova 4/5?
• Is there commit/release activity in the last 12 months, and is skauk canonical behind the rcknr Packagist name?
• Does it support relationship-column filters and dynamically sourced options, or static arrays only?
• What exactly does an empty selection return, is that documented, and is it covered by tests?
• How does filter state serialize per request, and does it compose correctly with Nova search, other active filters, and remembered state?
• Is there a test suite or CI matrix against Nova/Laravel/PHP versions, or is all validation on us?
• What is list-view latency at realistic option counts and data volumes, on indexed vs. unindexed columns?

Integration Approach

Stack fit

• Qualifies only for Laravel + Nova estates. Everywhere else (Filament, Backpack, custom SPA admin) it is irrelevant and can be dismissed in a sentence — do not spend evaluation time on it.
• Best fit is back-office triage over predefined categorical values: support queues by status/priority, orders by payment/fulfillment state, content by category/tag, users by role/plan/region. Weakest where workflows need dependent or async-loaded filters, saved views, boolean logic, or audit trails — those are explicit build-in-house signals.
• Map the outcome to an internal KPI (admin task time, filter adoption, reduced export-to-spreadsheet behavior), not to a customer-facing deliverable.

Migration path

• Purely additive. Add the filter class, register it in filters() on the selected resource, leave existing single-select filters untouched. No service-provider edits beyond Nova's discovery, no data work.
• Exit is symmetric and cheap: drop the filters() entries and the Composer line. That in-and-out symmetry is the strongest argument for a pilot and should be stated plainly in the approval ask.

Compatibility

• Pin an explicit version and record the supported Nova major in the service catalog entry. Gate Nova major upgrades behind a validation ticket that names this filter.
• PHP/Laravel constraints are largely dictated by Nova itself. The real checks are Nova major, Vue component syntax, and Nova's filter-state contract.
• Validate in staging against production-like data volumes and realistic option counts — query-shape and option-volume problems never appear on fixtures, and they surface as slow or subtly wrong admin views rather than as errors.

Sequencing

1. Confirm Nova version and license coverage, inspect composer.json and the Vue component, resolve canonical-repo ownership. (half day)
2. Spike on one high-friction resource in staging: verify multi-value semantics, empty selection, and composition with search and other filters.
3. Benchmark list-view latency and result correctness against a hand-written whereIn at a representative option set.
4. Make the buy-vs-build call. If the spike exposes missing semantics or a version gap, reimplement in-house rather than patching a third-party repo.
5. Roll out to two or three resources, document the pattern, then standardize — do not broaden until maintenance ownership and upgrade safety are confirmed.

Operational Impact

Maintenance

• Near-zero routine maintenance: no migrations, no config, no background jobs, no runtime state. The recurring cost is tracking — a named owner on a Nova-upgrade checklist that includes this dependency.
• If the admin panel is business-critical, vendor the source or hold a private fork from adoption. That converts abandonment risk into ordinary code ownership, an easier trade to defend than "we hope upstream ships."
• Budget roughly half a day per Nova major for validation and possible patching, reviewed alongside Nova's changelog in the same cadence.

Support

• No vendor, no SLA, no support contract. Issue response is best-effort from one maintainer; the escalation path is "we fix it ourselves" and belongs in the risk register, not in an assumption.
• Internal support load is low: the failure surface is a filter widget, operators mutate no data through it, and Nova's own authorization still governs access. No on-call implication.

Scaling

• Scales with the number of selected values, not with users. Wide IN clauses mean latency depends on indexing of the filtered columns — an application responsibility, not a package one.
• Option sets load server-side; very large lists (thousands) make the picker unusable. Cap or search-enable the option source at the resource level.
• Fully stateless per request: no concurrency, caching, or capacity modeling required.

Failure modes

• Silent wrong results. Empty selection returns zero rows instead of all rows, or the constraint widens unexpectedly. Detected only by operator complaint. Mitigation: explicit acceptance tests for empty, single, multi, and all-selected cases, plus a documented semantics note in the resource's admin docs.
• Upgrade breakage. The filter renders but stops filtering, or the Vue component fails to mount after a Nova upgrade. Mitigation: pinned versions and a post-upgrade admin-filter smoke test in the release checklist.
• Abandonment. Upstream stalls and a Nova major leaves the package incompatible. Mitigation: fork-or-replace decision pre-agreed, with the 1–2 day in-house rewrite scoped and costed as the fallback.
• Performance cliff. Large option sets or unindexed filter columns degrade list views under real data. Mitigation: staging benchmark at production-like volume before rollout, plus an index review for the filtered columns.

Ramp-up

• Developer ramp-up is minimal for anyone who has written a Nova filter: a few hours to read the source and pattern-match. Teams without Nova customization experience should budget a day, mostly for understanding Nova's filter-state serialization.
• Operator ramp-up is effectively zero — a checkbox dropdown is a familiar pattern, and the filter appears alongside existing ones in the panel. The only training need is the documented empty-selection behavior, which prevents the most likely support ticket.
• Documentation burden is light but non-optional: one internal note covering what the filter does, which resources use it, empty/multi-value semantics, and the fallback owner if it breaks.