Class: Feature
Constant Summary
AbstractFeature::FEATURE_TYPES
Class Method Summary
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Instance Method Summary
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area_in_square_meters, #cache_derivatives, cache_key, collection_cache_key, #envelope, #feature_bounds, #geojson, geojson, intersecting, invalid, #kml, lines, #make_valid?, points, polygons, total_intersection_area_in_square_meters, valid, with_metadata, within_distance, without_caching_derivatives
Class Method Details
.cache_derivatives(options = {}) ⇒ Object
Features are used for display so we also cache their KML representation
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# File 'app/models/feature.rb', line 17
def self.cache_derivatives(options = {})
super
update_all <<-SQL.squish
kml = ST_AsKML(geog, 6),
kml_lowres = ST_AsKML(geom_lowres, #{options.fetch(:lowres_precision, lowres_precision)}),
kml_centroid = ST_AsKML(centroid)
SQL
end
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.defer_aggregate_refresh(&block) ⇒ Object
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# File 'app/models/feature.rb', line 26
def self.defer_aggregate_refresh(&block)
start_at = Feature.maximum(:id).to_i + 1
output = without_aggregate_refresh(&block)
where(:id => start_at..Float::INFINITY).refresh_aggregates
return output
end
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.refresh_aggregates ⇒ Object
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# File 'app/models/feature.rb', line 43
def self.refresh_aggregates
ids = where.not(:spatial_model_type => nil)
.where.not(:spatial_model_id => nil)
.group('spatial_model_type, spatial_model_id')
.pluck('MAX(id)')
AbstractFeature.unscoped { where(:id => ids).find_each(&:refresh_aggregate) }
end
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.without_aggregate_refresh ⇒ Object
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# File 'app/models/feature.rb', line 35
def self.without_aggregate_refresh
old = Feature.automatically_refresh_aggregate
Feature.automatically_refresh_aggregate = false
yield
ensure
Feature.automatically_refresh_aggregate = old
end
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Instance Method Details
#automatically_refresh_aggregate? ⇒ Boolean
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# File 'app/models/feature.rb', line 59
def automatically_refresh_aggregate?
spatial_model_id? && automatically_refresh_aggregate && saved_change_to_geog?
end
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#refresh_aggregate ⇒ Object
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# File 'app/models/feature.rb', line 54
def refresh_aggregate
build_aggregate_feature unless aggregate_feature&.persisted?
aggregate_feature.refresh
end
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