watch_methods

What is this thing?

Monitor when methods are added to classes or modules and take action when they do.

Why would I want this?

You are:

• developing a kick-ass gem and you want your users to use your declarative methods before methods are actually defined (think AR validators, callback etc.)
• Want to monitor all methods starting with queue_ for your new awesome queueing gem.
• and more!

##Install

[sudo] gem install method_added_hook

Skip all the crap, give me the examples.

Examples

##Usage The method that you'll be interacting with is the watch_methods method that is defined as:

watch_methods(methods, opts={}, &blk)

Where:

• methods can be a symbol, string, array, regex or any combination. This will be all the methods you want to monitor.

• opts currently has two optional parameters :class_methods to watch for class methods and :once to only run the given block once for a given method.

• a given block, which will get run after a given method to watch was added.

Here are some valid uses of watch_methods:

watch_methods(:special_func1, :special_func2) do |meth|

end


# this will watch any class method starting with test_, queue_
watch_methods(/^test_.+$/, /^queue_.+$/, :class _methods => true) do |meth|

end

watch_methods([:meth_one, :meth_two]) do |meth|

 end

or a combination of all of the above:

watch_methods(:special_func, /^test_meth$/, [:meth1, :meth2]) do |meth|

end

To see all examples/cases, see the examples directory and the spec file.

###Supports Ruby 1.8.7, 1.9.2, 1.9.3