dynamic_method_generation

🛠️ Generate Methods Dynamically via Reflection

Use define_method in combination with instance_method and parameters to clone or wrap existing methods at runtime. This approach helps you add cross-cutting concerns like logging or authentication without manual duplication.

class ApiClient
  def get_user(id); # ... end
  def list_posts;   # ... end
end

ApiClient.instance_methods(false).each do |meth|
  original = ApiClient.instance_method(meth)
  ApiClient.define_method(":logged_#{meth}") do |*args, &blk|
    puts "[LOG] Calling #{meth} with "+args.inspect
    original.bind(self).call(*args, &blk)
  end
end

client = ApiClient.new
client.logged_get_user(42)