ruby 上海街道数据导入

Posted 2021-05-15

  task :shjd => :environment do
    layer = RegionLayer.find(185562)
    region_style_id = layer.default_region_style.id
    layer.regions.map(&:soft_del)
    layer.attr_fields.delete_all
    id_field_id = AttrField.create!(layer: layer, field: 'QH_NAME', is_title: true)&.id
    name_field_id = AttrField.create!(layer: layer, field: 'QH_CODE')&.id
    geojson_path="#{Rails.root}/shanghai.json"
    features=JSON.parse(File.read(geojson_path))
    features.each do |f|
      attrs = {
        id_field_id.to_s => f['QH_NAME'],
        name_field_id.to_s => f['QH_CODE']
      }
      p attrs
      type = f['json_geometry']['type']
      path = []
      if type == 'Polygon'
        coord_points=f['json_geometry']['coordinates']
        coord_points.each_with_index do |cps, index|
          part = []
          cps.each do |point|
            lng = point[0]
            lat = point[1]
            lng, lat = DtwyGeocoder.wgs_to_bd(lng, lat)
            part << "#{lng},#{lat}"
          end
          path << part.join(';')
        end
      else
        coord_points=f['json_geometry']['coordinates']
        coord_points.each_with_index do |parts, index|
          parts.each do |cps|
            part = []
            cps.each do |point|
              lng = point[0]
              lat = point[1]
              lng, lat = DtwyGeocoder.wgs_to_bd(lng, lat)
              part << "#{lng},#{lat}"
            end
            path << part.join(';')
          end
        end
      end
      path = path.join('|')
      encoded_path = Geospatial.path_encode(path)
      layer.regions.create!({
        map_id: layer.map_id,
        user_id: layer.user_id,
        region_type: 0,
        path: path,
        encoded_path: encoded_path,
        region_style_id: region_style_id,
        attrs: attrs
      })
    end
  end