Class: Reporter::Field::CalculationField

Inherits:
Base
  • Object
show all
Defined in:
lib/reporter/field/calculation_field.rb

Direct Known Subclasses

AverageField, CountField, SumField

Instance Method Summary collapse

Constructor Details

#initialize(structure, alias_name, data_source, calculation, column, options = {}, &block) ⇒ CalculationField

Returns a new instance of CalculationField.



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# File 'lib/reporter/field/calculation_field.rb', line 3

def initialize structure, alias_name, data_source, calculation, column, options = {}, &block
	super structure, alias_name
	@source = data_source
	@column = column
	@options = options
	@calculation = calculation
	@calculation_block = block if block_given?
end

Instance Method Details

#calculate_value(data_source, calculation_options) ⇒ Object 



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# File 'lib/reporter/field/calculation_field.rb', line 12

def calculate_value data_source, calculation_options
	source = data_source.get(@source)
	value = source.calculate @calculation, @column, options, &calculation_block
	Reporter::Value.new(name, options[:name], value, nil, options[:description], options[:source_link])
end

#preload_for_period(data_source, calculation_options, period, filter, scope) ⇒ Object 



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# File 'lib/reporter/field/calculation_field.rb', line 18

def preload_for_period data_source, calculation_options, period, filter, scope
	source = data_source.get(@source)
	values = source.calculate_for_period @calculation, period, filter, scope, @column, options, &calculation_block
	results = {}
	values.each do |r|
		val = r.delete :value
		results[r] = Reporter::Value.new(name, options[:name], val, nil, options[:description], options[:source_link])
	end
	results
end