Purpose

I love the concepts of AOP, but I did not like different too bloated libraries, so I made my own.

Anchor contains 91 lines of code and supports before, after and around.

See example: github.com/tione/anchor/tree/master/lib/anchor/support/rails.rb

Installation

Add to your Gemfile:

gem 'anchor'              # add this row after "gem 'rails'" if rails is used

And run:

bundle install

Or run:

gem install anchor

Naming recommendations

You can name things as you want, but it is recommended to it so:

Example: Using anchor for models in Rails app

Create app/anchors/your_model_anchor.rb (For autoload file’s postfix has to be “_anchor.rb”)

anchor YourModel do
  before :save do
    puts "Before save #{self.inspect}"
  end
end

Example: Using anchor in models

You can also do in app/models/your_model.rb

class YourModel
  include Anchor::Hooks

  before :save do
    puts "Before save #{self.inspect}"
  end

end

Usage examples

Instance, singleton, class, object

class Example
  def self.class_method
    "CLASS_METHOD"
  end
  def instance_method
    "INSTANCE_METHOD"
  end
end

anchor Example do
  before singleton :class_method do
    puts "before class_method"
  end
  after :instance_method do
    puts "after instance_method"
  end
end

@example = Example.new
@other   = Example.new

anchor @example do
  before :instance_method do
    puts "before @example
  end
end

Method regexp

anchor Yourmodel do
  before self.instance_methods.grep(/$methods/) do
    puts 
  end
end

You can find some examples from:

• github.com/tione/anchor/blob/master/test/test.rb

TODO: add some examples more