Class: ZipCode

Inherits:
Object
  • Object
show all
Defined in:
lib/zip_code.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(zipl) ⇒ ZipCode

Returns a new instance of ZipCode.



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# File 'lib/zip_code.rb', line 26

def initialize(zipl)
  row = db.execute( "select * from zip_codes where zip = '#{zipl.to_s}';" ).first
  return nil unless (row.kind_of?(Array) && row[1].to_s == zipl.to_s)
  @record = {}
  columns.each_with_index do |f,i|
    @record[f.to_sym] = row[i]
    self.instance_variable_set(:"@#{f.to_s}", row[i])
  end
  
end

Instance Attribute Details

#record ⇒ Object

Returns the value of attribute record.



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# File 'lib/zip_code.rb', line 3

def record
  @record
end

Class Method Details

.columns ⇒ Object 



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# File 'lib/zip_code.rb', line 18

def self.columns
  ZIP_COLUMNS
end

.db ⇒ Object 



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# File 'lib/zip_code.rb', line 9

def self.db
  raise "No database availablbe.  Please initialize it with Rake." unless ZIP_DB.kind_of?(SQLite3::Database)
  ZIP_DB
end

Instance Method Details

#columns ⇒ Object 



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# File 'lib/zip_code.rb', line 22

def columns
  self.class.columns
end

#db ⇒ Object 



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# File 'lib/zip_code.rb', line 14

def db
  self.class.db
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/zip_code.rb', line 37

def valid?
  record.kind_of?(Hash) && record.has_key?(:zip)
end