Calling dynamic methods in Ruby on Rails

Posted on 11 September 2007

To utilise dynamic method names in Ruby on Rails you can use Ruby's send method to pass a message to an object.

For example:

["foo", "bar"].each do |method|
	MyClass.send(method)
end

The above is obviously a very crude example but it's the same as calling MyClass.foo and MyClass.bar.

The point is that the array could be dynamic and this means you can write code that calls methods prior to knowing what those methods may well be.

You can use send to call dynamic helper methods by just calling it on it's own.

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