5dbe2cbf24
We're reworking the format validation to correctly interpret feature collection, feature, and geometry, according to RFC 7946 [1]. Since Leaflet interprets GeoJSON format, we're rendering the GeoJSON as a layer instead of as a set of points. For that, we're normalizing the GeoJSON to make sure it contains either a Feature or a FeatureCollection. We're also adding the Leaflet images to the assets path so the markers used for point geometries are rendered correctly. Note we no longer allow a GeoJSON containing a geometry but not a defined type. Since there might be invalid GeoJSON in existing Consul Democracy databases, we're normalizing these existing geometry objects to be part of a feature object. We're also wrapping the outline points in a FeatureCollection object because most of the large GIS systems eg ArcGIS, QGIS export geojson as a complete FeatureCollection. [1] https://datatracker.ietf.org/doc/html/rfc7946 Co-authored-by: Javi Martín <javim@elretirao.net>
61 lines
1.4 KiB
Ruby
61 lines
1.4 KiB
Ruby
class Geozone < ApplicationRecord
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include Graphqlable
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has_many :proposals
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has_many :debates
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has_many :users
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has_many :headings, class_name: "Budget::Heading", dependent: :nullify
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validates :name, presence: true
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validates :geojson, geojson_format: true
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scope :public_for_api, -> { all }
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def self.names
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Geozone.pluck(:name)
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end
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def safe_to_destroy?
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Geozone.reflect_on_all_associations(:has_many).all? do |association|
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association.klass.where(geozone: self).empty?
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end
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end
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def outline_points
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normalized_geojson&.to_json
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end
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private
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def normalized_geojson
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if geojson.present?
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parsed_geojson = JSON.parse(geojson)
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if parsed_geojson["type"] == "FeatureCollection"
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parsed_geojson
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elsif parsed_geojson["type"] == "Feature"
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wrap_in_feature_collection(parsed_geojson)
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elsif parsed_geojson["geometry"]
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wrap_in_feature_collection(wrap_in_feature(parsed_geojson["geometry"]))
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elsif parsed_geojson["type"] && parsed_geojson["coordinates"]
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wrap_in_feature_collection(wrap_in_feature(parsed_geojson))
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else
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raise ArgumentError, "Invalid GeoJSON fragment"
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end
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end
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end
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def wrap_in_feature(geometry)
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{
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type: "Feature",
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geometry: geometry
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}
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end
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def wrap_in_feature_collection(feature)
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{
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type: "FeatureCollection",
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features: [feature]
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}
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end
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end
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