Class: WorldDb::Models::City

Inherits:
ActiveRecord::Base
  • Object
show all
Defined in:
lib/worlddb/models/city.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.create_from_ary!(cities, more_values = {}) ⇒ Object 



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# File 'lib/worlddb/models/city.rb', line 65

def self.create_from_ary!( cities, more_values={} )
  cities.each do |values|
    
    ## key & title & country required
    attr = {
      key: values[0]
    }
    
    ## title (split of optional synonyms)
    # e.g. FC Bayern Muenchen|Bayern Muenchen|Bayern
    titles = values[1].split('|')
    
    attr[ :title ]    =  titles[0]
    ## add optional synonyms
    attr[ :synonyms ] =  titles[1..-1].join('|')  if titles.size > 1
    
    attr = attr.merge( more_values )
    
    value_numbers = []
    
    ## check for optional values
    values[2..-1].each do |value|
      if value.is_a? Country
        attr[ :country_id ] = value.id
      elsif value.is_a? Numeric
        value_numbers << value
      elsif value =~ /^[A-Z_]{3}$/    ## assume its three letter code (e.g. NYC,VIE,etc.)
        attr[ :code ] = value
      elsif value =~ /^region:/   ## region:
        value_region_key = value[7..-1]  ## cut off region: prefix
        value_region = Region.find_by_key!( value_region_key )
        attr[ :region_id ] = value_region.id
      else
        # issue warning: unknown type for value
      end
    end
    
    if value_numbers.size > 0
      attr[ :pop  ] = value_numbers[0]
      attr[ :area ] = value_numbers[1]
    end

    
    City.create!( attr )
  end # each city
end

Instance Method Details

#cities ⇒ Object

(1) metro - level up



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# File 'lib/worlddb/models/city.rb', line 16

has_many   :cities,    :class_name => 'City', :foreign_key => 'city_id'

#city ⇒ Object

(3) district - level down



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# File 'lib/worlddb/models/city.rb', line 23

belongs_to :city,      :class_name => 'City', :foreign_key => 'city_id'

#is_city? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/worlddb/models/city.rb', line 33

def is_city?
  c? == true
end

#is_district? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/worlddb/models/city.rb', line 37

def is_district?
  d? == true
end

#is_metro? ⇒ Boolean

NB: use is_ for flags to avoid conflict w/ assocs (e.g. metro?, city? etc.)

Returns:

  • (Boolean) 


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# File 'lib/worlddb/models/city.rb', line 29

def is_metro?
  m? == true
end

#metro ⇒ Object

(2) city



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# File 'lib/worlddb/models/city.rb', line 19

belongs_to :metro,     :class_name => 'City', :foreign_key => 'city_id'

#title_w_synonyms ⇒ Object 



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# File 'lib/worlddb/models/city.rb', line 54

def title_w_synonyms
  return title if synonyms.blank?
  
  buf = ''
  buf << title
  buf << ' | '
  buf << synonyms.split('|').join(' | ')
  buf
end