Module: IOPromise::DataLoader::ClassMethods

Defined in:
lib/iopromise/data_loader.rb

Instance Method Summary collapse

Instance Method Details

#attr_async(attr_name, build_func = nil) ⇒ Object 



6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
# File 'lib/iopromise/data_loader.rb', line 6

def attr_async(attr_name, build_func = nil)
  self.attr_async_names << attr_name

  if build_func.nil?
    self.class_eval("def async_#{attr_name};@#{attr_name};end")
  else
    self.define_method("async_#{attr_name}") do
      @attr_async_memo ||= {}
      @attr_async_memo[attr_name] ||= self.instance_exec(&build_func)
    end
  end

  self.class_eval("def #{attr_name};async_#{attr_name}.sync;end")
end

#attr_async_names ⇒ Object 



21
22
23
 
# File 'lib/iopromise/data_loader.rb', line 21

def attr_async_names
  @attr_async_names ||= []
end