在heroku上使用ruby和graphviz与heroku-buildpack-multi

Question

I'm trying to deploy my app on heroku. I use declarative_authorization with graphical visualisation.

I installed https://github.com/ddollar/heroku-buildpack-multi heroku config:set BUILDPACK_URL=https://github.com/ddollar/heroku-buildpack-multi and created .buildpacks with:

https://github.com/stigkj/heroku-buildpack-graphviz.git
https://github.com/heroku/heroku-buildpack-ruby.git

Building works fine:

-----> Fetching custom git buildpack... done
-----> Multipack app detected
=====> Downloading Buildpack: https://github.com/stigkj/heroku-buildpack-graphviz.git
=====> Detected Framework: graphviz
-----> Fetching and installing graphviz
       grapvhiz installed
=====> Downloading Buildpack: https://github.com/heroku/heroku-buildpack-ruby.git
=====> Detected Framework: Ruby/Rails
-----> Using Ruby version: ruby-1.9.3

But now I get when I access the graph:

Errno::ENOENT in AuthorizationRulesController#graph
No such file or directory - dot -q -Tsvg

What is the correct path?

Answer 1

Use https://github.com/gokceneraslan/heroku-buildpack-graphviz instead of https://github.com/stigkj/heroku-buildpack-graphviz.git .

Then, add this configuration:

heroku config:add PATH:/usr/local/bin:/usr/bin:/bin:/app/bin

Source: https://github.com/pygram/pygram#deployment-on-heroku

Answer 2

https://github.com/weibeld/heroku-buildpack-graphviz is a stable buildpack for Graphviz (see instructions there).

It automatically adds the location of dot and other Graphviz executables to the PATH .