Module: LazyRecord::Methods

Defined in:
lib/lazy_record/methods.rb

Overview

Macro for dynamic instance method generation. Best to use for one-liners.

Constant Summary collapse

METHODS_MODULE_NAME = 
:DynamicMethods

Instance Method Summary collapse

Instance Method Details

#lr_method(method_name, *method_args, method) ⇒ Object 



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# File 'lib/lazy_record/methods.rb', line 8

def lr_method(method_name, *method_args, method)
  include mod = get_or_set_mod(METHODS_MODULE_NAME)

  if method.respond_to?(:call)
    make_method_from_proc(mod, method_name, method)
  else
    make_method_from_string(mod, method_name, *method_args, method)
  end
end

#make_method_from_proc(mod, method_name, proc) ⇒ Object 



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# File 'lib/lazy_record/methods.rb', line 18

def make_method_from_proc(mod, method_name, proc)
  mod.module_eval do
    send(:define_method, method_name, &proc)
  end
end

#make_method_from_string(mod, method_name, *method_args, method) ⇒ Object 



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# File 'lib/lazy_record/methods.rb', line 24

def make_method_from_string(mod, method_name, *method_args, method)
  method_args = method_args.map(&:to_s).join(', ')
  mod.module_eval do
    define_method(method_name) do |*params|
      block = eval("lambda { |#{method_args}| #{method} }")
      block.call(*params)
    end
  end
end