LoadError cannot find dm-postgres-adapter when using Heroku Run Console

Question

I am on WSL, working on Ruby on Sinatra web application training, when I require the './main' on heroku run console command, I get LoadError and it can't require 'dm-postgres-adapter.

I have been following a tutorial, using WSL, I installed Ruby along with its dependencies, so far all the gems I've installed were successful. But when I push to heroku and when I run the 'heroku run console' command, and I type in 'require "./main"' I get a LoadError, telling me...

joelg@SurfacePro3:~/RubyProgs/SinatraExcercise$ heroku run console

Running console on ⬢ sinatra-project-jg... up, run.2550 (Free)

irb(main):001:0> require './main'

WARNING: If you plan to load any of ActiveSupport's core extensions to Hash, be
sure to do so *before* loading Sinatra::Application or Sinatra::Base. If not,
you may disregard this warning.
LoadError: cannot load such file -- dm-postgres-adapter
        from /app/vendor/bundle/ruby/2.4.0/gems/dm-core-1.2.1/lib/dm-core/adapters.rb:163:in `require'
        from /app/vendor/bundle/ruby/2.4.0/gems/dm-core-1.2.1/lib/dm-core/adapters.rb:163:in `load_adapter'
        from /app/vendor/bundle/ruby/2.4.0/gems/dm-core-1.2.1/lib/dm-core/adapters.rb:133:in `adapter_class'
        from /app/vendor/bundle/ruby/2.4.0/gems/dm-core-1.2.1/lib/dm-core/adapters.rb:13:in `new'
        from /app/vendor/bundle/ruby/2.4.0/gems/dm-core-1.2.1/lib/dm-core.rb:230:in `setup'
        from /app/main.rb:21:in `block in '
        from /app/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.4/lib/sinatra/base.rb:1426:in `configure'
        from /app/vendor/bundle/ruby/2.4.0/gems/sinatra-2.0.4/lib/sinatra/base.rb:1925:in `block (2 levels) in delegate'
        from /app/main.rb:20:in `'
        from (irb):1:in `require'
        from (irb):1
        from /app/bin/irb:15:in `'
irb(main):002:0>

When I ran it said that dm-postgres-adapter is not required, but it is I have it loaded on my Gemfile.

What require lines exist in main.rb? What tutorial are you following? — anothermh
– anothermh, Commented Dec 22, 2018 at 23:20
require "sinatra" require "sinatra/contrib" if development? require 'sinatra/flash' require "pony" require "slim" require "sass" require "./song" require './sinatra/auth' require 'v8' require 'coffee-script' I'm following the jumpstart sinatra book. — JHero23
– JHero23, Commented Dec 22, 2018 at 23:24
That's quite difficult to read so you should move that information into your question. What happens if you add require 'dm-postgres-adapter'? — anothermh
– anothermh, Commented Dec 22, 2018 at 23:31
same error, just that this time the error is in the require section. — JHero23
– JHero23, Commented Dec 22, 2018 at 23:45
Not sure, I'd suggest going through the guide you're using with a fine toothed comb and make sure you're following every step exactly in order. — anothermh
– anothermh, Commented Dec 23, 2018 at 0:20

J.R. Bob Dobbs · Accepted Answer · 2019-04-30 22:05:03Z

0

I was getting the same errors. Don't ignore the Warnings from Heroku when you push to heroku.

If you're using Git (which you probably are) you'll need to first remove the .bundle/ folder via the command line:

git rm --cached -r .bundle/

Then you'll need to add a .gitignore file in the main directory with ".bundle/" in the body of the file

Commit it all to git and/or github. Push to Heroku. (no more nasty warning RE the .bundle/ folder)

Then run your heroku run console command and pick up with the Jumpstart tutorial again.

answered Apr 30, 2019 at 22:05

J.R. Bob Dobbs

2953 silver badges14 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

JHero23 Over a year ago

T_T .....THANK YOU, I'VE BEEN STRUGGLING WITH THAT FOR OVER ALMOST A YEAR NOW, and it worked

Collectives™ on Stack Overflow

LoadError cannot find dm-postgres-adapter when using Heroku Run Console

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related