Rails: is there Engine.root?

Question

Rails.root returns a Path object that defines the root of the Rails project.

Is there an equivalent engine for Rails? How is Engine.root ? If not, how else can I create a path from the root of my Rails engine?

Answer 1

Suppose your engine file is configured as follows:

 module MyEngine class Engine < Rails::Engine #...... end end 

You can call root in the Engine class as follows:

 MyEngine::Engine.root 

Answer 2

John's answer is right, but I would fix it a bit:

When you mount your engine in the routes file, first add an alias.

 mount YourEngineNameHere::Engine => '/optional_namespace', as: 'your_engine_name' 

Then do your_engine_name.root_url