Class: FlattenRecord::Meta::ComputeColumn

Inherits:
Column
  • Object
show all
Defined in:
lib/flatten_record/meta/compute_column.rb

Instance Attribute Summary

Attributes inherited from Column

#column

Attributes inherited from Node

#children, #model, #parent, #target_model

Instance Method Summary collapse

Methods inherited from Column

#column_prefix, #name, #nullify, #type

Methods inherited from Node

#prefix, #traverse_by

Constructor Details

#initialize(parent, method, type, target_model, model, options = {}) ⇒ ComputeColumn 



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# File 'lib/flatten_record/meta/compute_column.rb', line 4

def initialize(parent, method, type, target_model, model, options={})
  @column = new_column(method, options[:default], :integer, options[:not_null])  
  super(parent, @column, target_model, model) 
end

Instance Method Details

#denormalize(instance, to_record) ⇒ Object 



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# File 'lib/flatten_record/meta/compute_column.rb', line 9

def denormalize(instance, to_record)
  first_record = to_record.respond_to?(:each) ? to_record.flatten.first : to_record

  #if first_record.class.method_defined?(@column.name)
  begin
    to_record = assign_value(to_record, name) do |record|
      record.send("compute_#{@column.name}".to_sym, instance)
    end
  rescue
    raise "compute_#{@column.name} is not found in #{to_record.inspect}"
  end
  to_record
end