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# frozen_string_literal: true
module USGeo
# Combined statistical area (CSA) of multiple metropolitan areas with weak regional
# and economic connectoins between them.
class CombinedStatisticalArea < BaseRecord
include Population
include Area
self.primary_key = "geoid"
has_many :core_based_statistical_areas, -> { not_removed }, foreign_key: :csa_geoid, inverse_of: :combined_statistical_area
has_many :counties, -> { not_removed }, through: :core_based_statistical_areas
has_many :metropolitan_divisions, -> { not_removed }, through: :core_based_statistical_areas
validates :geoid, length: {is: 3}
validates :name, presence: true, length: {maximum: 60}, uniqueness: true
validates :land_area, numericality: true, presence: true
validates :water_area, numericality: true, presence: true
validates :population, numericality: {only_integer: true}, presence: true
validates :housing_units, numericality: {only_integer: true}, presence: true
# @!attribute geoid
# @return [String] 3-digit code for the CSA.
# @!attribute name
# @return [String] Name of the CSA.
# @!attribute short_name
# @return [String] Short name of the CSA.
class << self
def load!(uri = nil)
location = data_uri(uri || "combined_statistical_areas.csv")
import! do
load_data_file(location) do |row|
load_record!(geoid: row["GEOID"]) do |record|
record.name = row["Name"]
record.short_name = row["Short Name"]
record.population = row["Population"]
record.housing_units = row["Housing Units"]
record.land_area = row["Land Area"]
record.water_area = row["Water Area"]
end
end
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems