如何在Ruby / RoR脚本中安装gem？

Question

I have a problem with this

rails console
Loading development environment (Rails 3.2.13)
irb(main):001:0> system "bundle install"
←[31mssh://git@sykav-sr-pr-004.domain.local:7999/kpr/kpr_exchange.git (at master) is not checked out. Please run `bundle install`←[0m
=> false

UPD

It's work for me:

Bundler.with_original_env { system('bundle install') }

result code for bundle install after add gem in gemfile:

def update_bundler
    crashed = false
    begin
        puts "START 'bundle install'"
        result = nil
        Bundler.with_original_env { result = system('bundle install') }
        raise if !result
        puts "DONE"
    rescue
        puts "WE HAVE PROBLEM IN bundler"
        crashed = true
        FileUtils.cp("Gemfile_backup", "Gemfile")
    end
    crashed
end

Answer 1

Console

The problem you have is you're using the Rails console - you don't want to do that, you want to use your standard system CMD :

$ rails c
$ ... your stuff
$ exit
$ bundle install

Rails is a gem too - meaning if you load the Rails console, it will be just like running an application on your system; you won't be able to call any OS-level commands.

bundle install is like a control panel function - it installs the required gems for your Rails app, meaning you need to run it at OS-level, not rails level