1) Install this plugin in RubyMine
- go to Preferences -> Plugins
- Click Browse repositories and search for PlantUML
- Select this plugin in the list to the right and choose Download and Install in the popup menu
- Restart IDE
2) In the command line install libtool and graphviz
brew install libtool
brew install graphviz
3) open some ruby file and add this code for a test (use block comment to isolate UML diagram from ruby translator =begin =end)
=begin
@startuml
testdot
@enduml
=end
4) Go to menu View -> Tool Windows -> PlantUML
It should display
The environment variable GRAPHVIZ_DOT has not been set
Dot executable is /usr/local/bin/dot
Dot version: ...
Installation seems OK. File generation OK
Another example from official website
=begin
@startuml
:First Actor:
:Another actor: as Men2
actor Men3
actor :Last actor: as Men4
@enduml
=end