Contrasting behavior in JavaScript experienced in development versus production environments

I've been working on an application that, when given certain data, generates a diagram using JavaScript in conjunction with the kineticJS framework.

During development, everything is smooth sailing, but once deployed to production (Heroku), things start going awry.

For example, here's what I see in development with the same data:

And here's the chaotic mess that appears in production:

As a newcomer to Rails, I suspect I'm overlooking something simple, but I can't pinpoint exactly what it is.

My JavaScript is in the asset pipeline and is being compiled for production.

Could this issue be related to pre-compilation in the asset pipeline?

What's the most effective way to troubleshoot these production issues?

I understand that I can utilize Heroku logs for bugs related to Rails or Ruby, but they don't provide much assistance with debugging this JavaScript discrepancy.

Any suggestions or advice?

javascriptruby-on-railsruby-on-rails-4herokukineticjs

Answer №1

In my opinion, I would suggest performing a local rake assets:precompile and running your Rails server in production mode. This will allow you to troubleshoot the problem locally.

RAILS_ENV=production rails s

If this solution does not resolve the issue and you suspect it may be specific to Heroku, here is a helpful tip. I recently encountered a situation where some of my views were relying on an environment variable, only to discover that environment variables are not accessible to assets:precompile during the build phase unless a Heroku Buildpack is utilized.

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