Module: LazyAttributes::ClassMethods

Defined in:
lib/lazy_attributes.rb

Instance Method Summary collapse

Instance Method Details

#column_names_without_lazy ⇒ Object 



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# File 'lib/lazy_attributes.rb', line 44

def column_names_without_lazy
  column_names - self._lazy_attributes
end

#column_symbols_without_lazy ⇒ Object 



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# File 'lib/lazy_attributes.rb', line 48

def column_symbols_without_lazy
  column_names_without_lazy.map(&:to_sym)
end

#lazy_attributes(*attrs) ⇒ Object 



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# File 'lib/lazy_attributes.rb', line 21

def lazy_attributes(*attrs)
  if self._lazy_attributes.empty?
    default_scope do
      select(column_names_without_lazy.map do |column_name|
        "#{table_name}.#{column_name}"
      end)
    end
  end
  attrs = attrs.map(&:to_s)
  attrs.each do |attr|
    attr = attr.to_sym
    define_method(attr) do
      reload_but_keep_changes unless has_attribute?(attr)
      read_attribute(attr)
    end
    define_method(:"#{attr}=") do |val|
      reload_but_keep_changes unless has_attribute?(attr)
      write_attribute(attr, val)
    end
  end
  self._lazy_attributes += attrs
end