# `Sigra.Plug.LoadOrganizationFromSlug`
[🔗](https://github.com/sztheory/sigra/blob/v1.20.0/lib/sigra/plug/load_organization_from_slug.ex#L1)

URL-driven active organization loader (Phase 16 D-03, D-04, D-13).

Reads `conn.params[scope_param]` (default `"org"`), resolves the
organization by slug, verifies membership, follows 7-day slug aliases,
and refreshes the session pointer when the URL org differs from the
session pointer — delegating the write to
`Sigra.Plug.PutActiveOrganization.call/3` (Phase 14 D-16 single-writer).

Returns 404 via the configured `error_handler` for unknown slugs AND
for known slugs the current user is not a member of (enumeration
prevention, D-04). Both paths go through the same `:not_found`
disposition so callers cannot distinguish them by response shape or
timing.

## Options

  * `:error_handler` — required. Module implementing
    `Sigra.Plug.ErrorHandler`. Used for the `:not_found` halt path.
  * `:organizations` — required. The host's `use Sigra.Organizations`
    module exposing `__sigra_org_config__/0`.
  * `:session_store` — required. Module implementing
    `Sigra.SessionStore`. Forwarded to
    `Sigra.Plug.PutActiveOrganization.call/3` when the URL org
    differs from the session pointer.
  * `:scope_module` — required. Host scope module for `put_active_organization/3`.
  * `:scope_param` — optional. URL param name holding the slug.
    Default: `"org"`.
  * `:session_store_opts` — optional. Forwarded to the session store.

---

*Consult [api-reference.md](api-reference.md) for complete listing*