Module: VirtualAttributes::ClassMethods

Defined in:
lib/virtual_attributes.rb

Instance Method Summary collapse

Instance Method Details

#virtual_attribute(name, options) ⇒ Object 



10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
# File 'lib/virtual_attributes.rb', line 10

def virtual_attribute(name, options)
  name_equals = "#{name.to_s}="
  inst_var = "@#{name.to_s}"
  
  define_method(name_equals) do |value|
    attr = ActiveRecord::ConnectionAdapters::Column.new(name, options[:default], options[:type].to_s)
    instance_variable_set inst_var, (attr.type_cast(value) || attr.default)
  end

  define_method(name) do
    if instance_variable_defined?(inst_var)
      instance_variable_get(inst_var)
    else
      instance_variable_set inst_var, ActiveRecord::ConnectionAdapters::Column.new(name, options[:default], options[:type].to_s).default
    end
  end
end