Crate umbral_admin 

umbral-admin — auto-generated CRUD admin for umbral models.

Drop-in admin interface for any umbral project. Register the AdminPlugin on App::builder() and every model the migration registry knows about gets:

• A list view at /admin/<table>/ with all rows in a table
• A detail view at /admin/<table>/<id> with every field
• A create form at /admin/<table>/new
• An edit form at /admin/<table>/<id>/edit
• A delete action at POST /admin/<table>/<id>/delete

Plus a registered-models index at /admin/.

Customizing per-model display

Register an AdminModel for a model to control list columns, filter facets, search, ordering, bulk actions, and readonly fields. See AdminPlugin::register and the config module.

Auth

Every admin route requires a session-backed staff user. If the session is missing or the user is not staff, the handler redirects to GET /admin/login?next=<current-url>. POST /admin/login verifies credentials via umbral_auth::authenticate, creates a session via [umbral_sessions::login], then redirects to next.

Templates

Six include_str!-embedded Jinja templates live in templates/. The admin owns its own minijinja Environment. admin/base.html is the shell (sidebar + topbar + content slot); the other five extend it.

Form widgets

Inputs dispatch per [SqlType]:

SqlType	Input
SmallInt, Integer, BigInt	<input type="number">
Real, Double	<input type="number" step="any">
Boolean	<input type="checkbox">
Text, Uuid	<input type="text">
Date	<input type="date">
Time	<input type="time">
Timestamptz	<input type="datetime-local">

Nullable fields skip the required attribute.

Re-exports

pub use files::file_descriptor;

pub use files::resolve_preview_kind;

pub use config::Action;

pub use config::ActionInvocation;

pub use config::ActionResult;

pub use config::ActionScope;

pub use config::ActionVariant;

pub use config::AdminConfig;

pub use config::AdminContext;

pub use config::AdminModel;

pub use config::InlineKind;

pub use config::InlineModel;

pub use config::ToastLevel;

pub use registry::AdminRegistration;

pub use registry::AdminRegistry;

pub use registry::App as AdminApp;

pub use widgets::BarPayload;

pub use widgets::CardPayload;

pub use widgets::CatalogEntry;

pub use widgets::ChartPoint;

pub use widgets::DonutPayload;

pub use widgets::DonutSlice;

pub use widgets::FeedItem;

pub use widgets::FeedPayload;

pub use widgets::FilterOption;

pub use widgets::HeatmapCell;

pub use widgets::HeatmapPayload;

pub use widgets::HeatmapRow;

pub use widgets::KpiPayload;

pub use widgets::LinePayload;

pub use widgets::ProgressItem;

pub use widgets::ProgressPayload;

pub use widgets::RadialPayload;

pub use widgets::RadialTrack;

pub use widgets::Series;

pub use widgets::Span;

pub use widgets::TableColumn;

pub use widgets::TablePayload;

pub use widgets::Widget;

pub use widgets::WidgetDataFn;

pub use widgets::WidgetFilter;

pub use widgets::WidgetFilterKind;

pub use widgets::WidgetInstance;

pub use widgets::WidgetKind;

pub use widgets::WidgetParams;

pub use widgets::WidgetPayload;

pub use widgets::WidgetSection;

pub use widgets::format_thousands;

pub use widgets::humanize_number;

Modules

branding

Admin chrome the developer can rebrand at plugin-build time — site title, site description, and brand color.

config

Per-model admin customization bundles.

files

File descriptor helpers — MIME / extension → preview kind, plus the serde_json::Value shape the file-preview macros consume.

models

Admin-owned models: user preferences and audit log.

registry

AdminRegistry — per-plugin grouping of registered models.

widgets

Dashboard widget system for umbral-admin.

Structs

AdminPlugin

AdminView

A registered admin page that is not tied to a model. Renders one or more WidgetSections (the same cards/charts the dashboard uses) inside the admin chrome, mounted at {admin_base}/{path}.

Enums

DashboardModelsConfig

The plugin. Mounts every admin route under /admin.

Functions

builtin_recent_users_widget

Recent signups feed — last 5 auth_user rows ordered by date_joined. Gracefully degrades to an empty list if the table is absent (e.g. an admin-only install where AuthPlugin isn’t registered), so this widget never breaks the dashboard.

builtin_total_models_widget

Models by plugin bar chart — counts every model the migration registry knows about, grouped by plugin. Cheap to compute and always present.