set_root_path!()
  public
  
    
    
Set the root_path to
RAILS_ROOT and canonicalize it.
   
  
    Show source    
    
      
    def set_root_path!
      raise 'RAILS_ROOT is not set' unless defined?(::RAILS_ROOT)
      raise 'RAILS_ROOT is not a directory' unless File.directory?(::RAILS_ROOT)
      @root_path =
        
        
        if RUBY_PLATFORM =~ /(:?mswin|mingw)/
          File.expand_path(::RAILS_ROOT)
        
        else
          Pathname.new(::RAILS_ROOT).realpath.to_s
        end
    end