Cannot access Rails console in Windows - LoadError

Question

I'm using JRuby because it's better for SRS Ruby on Rails, on Windows.

My solution was to use jirb in cmd.exe or Powershell (not gitbash).

I've tried:

$ rails console
Loading development environment (Rails 4.2.4)
Switch to inspect mode.
LoadError: load error: rails/commands -- java.lang.UnsatisfiedLinkError: The operation completed successfully.

  require at org/jruby/RubyKernel.java:939
    <top> at bin/rails:4

and:

$ bundle exec rails console
uri:classloader:/jruby/kernel/kernel.rb:17: warning: unsupported exec option: close_others
Loading development environment (Rails 4.2.4)
Switch to inspect mode.
LoadError: load error: rails/commands -- java.lang.UnsatisfiedLinkError: The operation completed successfully.

  require at org/jruby/RubyKernel.java:939
    <top> at bin/rails:4

and:

$ jruby.exe -S bundle exec rails console
uri:classloader:/jruby/kernel/kernel.rb:17: warning: unsupported exec option: close_others
Loading development environment (Rails 4.2.4)
Switch to inspect mode.
LoadError: load error: rails/commands -- java.lang.UnsatisfiedLinkError: The operation completed successfully.

  require at org/jruby/RubyKernel.java:939
    <top> at bin/rails:4

I tried the solution " Load error when running rails console ", but restarting the computer has no effect. bin/spring has no mention of GEM_HOME . I reinstalled Rails and Spring.

Is this because of JRuby?

I'm entertaining the idea that jruby -S rails console requires C extensions. I found another way to access the console using JRuby's own jirc. I started with:

$ jirb
Switch to inspect mode.

then edited ~/.irbrc to include

IRB.conf[:PROMPT_MODE] = :SIMPLE

which produced:

$ jirb
Switch to inspect mode.
>>

which then immediately exits. Doing this:

$ jirb puts 'hello'
Switch to inspect mode.
Errno::ENOENT: No such file or directory - puts
  initialize at org/jruby/RubyFile.java:342
        open at org/jruby/RubyIO.java:1124
        open at G:/jruby-9.0.1.0/lib/ruby/stdlib/irb/magic-file.rb:7
  initialize at G:/jruby-9.0.1.0/lib/ruby/stdlib/irb/input-method.rb:100
  initialize at G:/jruby-9.0.1.0/lib/ruby/stdlib/irb/context.rb:84
  initialize at G:/jruby-9.0.1.0/lib/ruby/stdlib/irb.rb:426
       start at G:/jruby-9.0.1.0/lib/ruby/stdlib/irb.rb:381
       <top> at G:/jruby-9.0.1.0/bin/jirb:13

Since my console is still not working and nothing about jirc is using C extensions, the question is not a duplicate to that one.

Answer 1

Yes, I would try and install jruby to resolve this

See http://jruby.org/getting-started

Then do bundle from the root of the project

Answer 2

TL;DR use jirb in Command Prompt to execute Ruby code.

I never resolved making rails console work. This may have to do with my ruby installation being a part of jRuby.

However, irb and jirb allow me to execute Ruby snippets on the command line with either Command Prompt or Powershell. GitBash doesn't work, says Switch to inspect mode. followed by >> and then exits.