Model userstamp

rubyonrails-talk
1

module ObjectStatistics   def included(other)     other.send(:belongs_to, :created_by, :class_name => "User", :foreign_key =>"created_by")     other.send(:belongs_to, :updated_by, :class_name => "User", :foreign_key =>"updated_by")   end   ... end

This will call the belongs_to method on the class that the module is included in. You may need to fiddle with the syntax, can't test this at the moment.

Cheers, Max

2

Hi all,

I am trying to do a functional test on a controller that mixes in a module with an expensive method, but I would like to mock out that method for my testing purposes. I can't seem to do it. Here's what I have tried

def setup   @controller = MyController.new   klass = class << @controller; self; end   klass.send(:undef_method, :something_expensive)   klass.send(:define_method, :something_expensive, lambda {nil}) end

I have also tried to do the less idiomatic but more straightforward def @controller.something_expensive; nil; end

but that didn't help, either. The undef_method fails because it can't find the method (I guess becaues it's actually defined in the module). The other way just silently fails to accomplish its objective. I've googled some but am somewhat perplexed. Ideas?

### this is what the controller looks like ###

class MyController   include ModuleWithExpensiveMethod end

module ModuleWithExpensiveMethod   def something_expensive   sleep(100)   end end

3

I’ve got a plugin which handles this very simply. You just add two columns to the table, created_by_id and updated_by_id, then declare:

class Person < ActiveRecord::Base acts_as_monitored end

And the fields will be updated accordingly. This is a slightly nicer solution as it allows you to include the associations with a find.

The plugin assumes the current user can be accessed through User.current (you can change this if you need).

http://svn.viney.net.nz/things/rails/plugins/acts_as_monitored

-Jonathan.

4

Both of these techniques work fine when I try your examples - are you sure your example illustrates the problem you are seeing?

A third way is like this…

def setup

@controller = MyController.new class << @controller undef something_expensive # not strictly necessary def something_expensive; end end end

But if you are getting into mocking and stubbing, you might like to have a look at Mocha at http://mocha.rubyforge.org which can make your life a bit easier.