demarches-normaliennes/app/models/geo_area.rb
2020-10-01 15:09:38 +02:00

109 lines
2.4 KiB
Ruby

# == Schema Information
#
# Table name: geo_areas
#
# id :bigint not null, primary key
# geometry :jsonb
# properties :jsonb
# source :string
# created_at :datetime
# updated_at :datetime
# champ_id :bigint
# geo_reference_id :string
#
class GeoArea < ApplicationRecord
belongs_to :champ, optional: false
store :properties, accessors: [
:description,
:surface_intersection,
:surface_parcelle,
:numero,
:feuille,
:section,
:code_dep,
:nom_com,
:code_com,
:code_arr,
:code,
:nom,
:commune,
:culture,
:code_culture,
:surface,
:bio
]
enum source: {
quartier_prioritaire: 'quartier_prioritaire',
cadastre: 'cadastre',
parcelle_agricole: 'parcelle_agricole',
selection_utilisateur: 'selection_utilisateur'
}
scope :selections_utilisateur, -> { where(source: sources.fetch(:selection_utilisateur)) }
scope :quartiers_prioritaires, -> { where(source: sources.fetch(:quartier_prioritaire)) }
scope :cadastres, -> { where(source: sources.fetch(:cadastre)) }
scope :parcelles_agricoles, -> { where(source: sources.fetch(:parcelle_agricole)) }
def to_feature
{
type: 'Feature',
geometry: geometry,
properties: properties.symbolize_keys.merge(
source: source,
area: area,
length: length,
id: id,
champ_id: champ.stable_id,
dossier_id: champ.dossier_id
).compact
}
end
def rgeo_geometry
RGeo::GeoJSON.decode(geometry.to_json, geo_factory: RGeo::Geographic.simple_mercator_factory)
rescue RGeo::Error::InvalidGeometry
nil
end
def self.from_feature_collection(feature_collection)
feature_collection[:features].map do |feature|
GeoArea.new(
source: feature[:properties].delete(:source),
properties: feature[:properties],
geometry: feature[:geometry]
)
end
end
def area
if polygon?
GeojsonService.area(geometry.deep_symbolize_keys).round(1)
end
end
def length
if line?
GeojsonService.length(geometry.deep_symbolize_keys).round(1)
end
end
def location
if point?
Geo::Coord.new(*rgeo_geometry.coordinates.reverse).to_s
end
end
def line?
geometry['type'] == 'LineString'
end
def polygon?
geometry['type'] == 'Polygon'
end
def point?
geometry['type'] == 'Point'
end
end