Module: MultidimensionalTable

Defined in:
lib/multidimensional_table/version.rb,
lib/multidimensional_table/non_valid_dimension.rb,
lib/multidimensional_table/multidimensional_table.rb,
lib/multidimensional_table/non_existant_dimension_attribute.rb

Defined Under Namespace

Classes: NonExistantDimensionAttribute, NonValidDimension

Constant Summary collapse

VERSION = 
"1.0.1"

Instance Method Summary collapse

Instance Method Details

#check_duplicates(map) ⇒ Object 



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# File 'lib/multidimensional_table/multidimensional_table.rb', line 30

def check_duplicates(map)
  list = {}
  combined = map.each_value.reduce([]) { |all, value| all << value }.flatten
  combined.each do |item|
    if list[item].nil? 
      list[item] = 1
    else
      list[item] = list[item] + 1
    end
  end
  duplicates = list.select { |key, value| key if value > 1 }
  if duplicates != {}
    non_valid_dimensions = {}
    duplicates.each_key do |duplicate|
      non_valid_dimensions[duplicate] = []
      map.each do |key,value|
        non_valid_dimensions[duplicate] << key if value.include?(duplicate)
      end
    end
    raise NonValidDimension, non_valid_dimensions
  end
end

#dimensions ⇒ Object 



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# File 'lib/multidimensional_table/multidimensional_table.rb', line 69

def dimensions
  @dimensions ||= {}
end

#dimensions=(map) ⇒ Object 



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# File 'lib/multidimensional_table/multidimensional_table.rb', line 6

def dimensions=(map)
  @dimensions = map
  check_duplicates(map)
  @dimensions.each do |key, value|
    value.each do |possible_value|
      define_method possible_value do |value = nil,  &block|
        if value.nil? && !block.nil?
          @index_level += 1
          @context[@index_level] = "@attributes[:#{key}] == :#{possible_value}" 
          begin
            block.call
          rescue NoMethodError => e
            raise NonExistantDimensionAttribute.new(e.name)
          end
          @index_level -= 1
        elsif !value.nil?
          context = (1..@index_level).reduce([]) { |context, level| context << @context[level] }
          @table_rules[value] = context << ["@attributes[:#{key}] == :#{possible_value}"]  
        end
      end
    end
  end
end

#table_data ⇒ Object 



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# File 'lib/multidimensional_table/multidimensional_table.rb', line 61

def table_data
  @context = []
  @table_rules = {}
  @attributes ||= {}
  @index_level = 0
  yield
end

#table_result ⇒ Object 



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# File 'lib/multidimensional_table/multidimensional_table.rb', line 57

def table_result
  @table_rules.each { |key, condition| return key if class_eval(condition.join(' && ')) == true }
end

#update_attributes(attrs) ⇒ Object 



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# File 'lib/multidimensional_table/multidimensional_table.rb', line 53

def update_attributes(attrs)
  attrs.each do |key, value| @attributes[key] = value end
end