I\'m building an engine I\'ve bundled as a gem (gmaps4rails). I copied the /public of my engine in the /public of my rails app.
Everything works fine in development
In your engine, replace:
initializer "static assets" do |app| app.middleware.use ::ActionDispatch::Static, "#{root}/public" end
with:
initializer "static assets" do |app| app.middleware.insert_before(::ActionDispatch::Static, ::ActionDispatch::Static, "#{root}/public") end