GeoJSON¶

OGC Features items are GeoJSON, but plain GeoJSON models have no links, counts, or top-level bbox. These Feature/FeatureCollection models add gazebo's hypermedia surface to validated RFC 7946 geometry.

Optional extra

The GeoJSON models live behind the gazebo[geojson] extra — install it to import gazebo.geojson. They build on geojson-pydantic for coordinate-validated geometry (the seven GeoJSON geometry types are re-exported), so the core dependency footprint stays pydantic-only.

The item payloads of an OGC Features collection are GeoJSON. gazebo.geojson reuses geojson-pydantic for the geometry/feature shapes — the tedious, easy-to-get-subtly-wrong coordinate validation — and layers gazebo's deferred links on top:

Feature[P] is generic over its properties model P, inherits geometry validation, and adds a links array.
FeatureCollection[P] is a LinkedCollection, so it carries links, numberReturned/numberMatched, and an optional top-level bbox — none of which geojson-pydantic's own collection has. Items serialize under the GeoJSON features key.

from pydantic import BaseModel

from gazebo.geojson import Feature, FeatureCollection, Point, Position2D
from gazebo.link import Link
from gazebo.rels import MediaType, Rel


class BedProperties(BaseModel):
    name: str


# `Feature` is generic over its `properties` model; geometry is coordinate-validated
# by geojson-pydantic, and gazebo adds the deferred `links`.
rose_bed = Feature[BedProperties](
    id='roses',
    geometry=Point(type='Point', coordinates=Position2D(-122.6, 45.5)),
    properties=BedProperties(name='Rose Bed'),
    links=[Link.self_link(type=MediaType.GEOJSON)],
)

# `FeatureCollection` is a LinkedCollection: items serialize under `features`, and
# it carries `links` + `numberReturned` (and an optional top-level `bbox`).
beds = FeatureCollection[BedProperties](
    items=[rose_bed],
    links=[Link.root_link(rel=Rel.ROOT)],
)

Because FeatureCollection is a LinkedCollection, the same deferred-link machinery applies: build it in business logic with no request in hand, and the hrefs resolve at serialization. Pair it with the query-parameter adapters for bbox/datetime/crs filtering and the Collection/Extent metadata models to stand up a full OGC Features collection — see the garden example.

Reference¶

See gazebo.geojson.