rubygems

问题 Adding to gemfile failed and hence I tried gem install rabl . It fails with the following error message, looks like its OS specific... I'm on Windows 7 and using Ruby 2.2 on Rails 5 api G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:388:in `symlink': symlink() function is unimplemented on this machine (NotImplementedError) from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems/package.rb:388:in `block (2 levels) in extract_tar_gz' from G:/Ruby/ruby/lib/ruby/site_ruby/2.2.0/rubygems

问题 Today I worked with the way a system executes rails command. And discovered this chain ruby_instalation_dir/bin/rails -> ruby/gems/reilaties/exe/rails -> ruby/gems/reilaties/lib/rails/cli.rb Last two elements of this chain I able to find in the GitHub. Now I'm seeking what is the instructions that tell RubyGem how to generate rails file. I did not find any match of railaties in the rails.gemspec file. But some how RubyGem knows that need to call railaties gem. Where does this information

问题 When I could run the rails project yesterday on local. But today I can't run the project with the below issues. I haven't done anything. I am using Spring 2.1.0 $ rails s => Booting Puma => Rails 5.2.4.1 application starting in development => Run `rails server -h` for more startup options Exiting You've tried to invoke Spring when it's already loaded (i.e. the Spring constant is defined). This is probably because you generated binstubs with Spring 1.0, and you now have a Spring version > 1.0

问题 I'm completely new to Ruby on Rails, and I'm having trouble setting it up on my Windows PC . I have successfully followed the instructions on http://rubyonrails.org/download. However, when I go to run the rails server command I come up with this output: C:/Ruby192/lib/ruby/gems/1.9.1/gems/execjs-1.2.9/lib/execjs/runtimes.rb:47:in `a utodetect': Could not find a JavaScript runtime. See https://github.com/sstephen son/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable) from C:

问题 I am able to install and execute a gem as follows: rbenv install 2.4.1 rbenv local 2.4.1 # enter the environment gem install fpm fpm --version I was expecting to be able to execute the gem from outside the environment too, something like: rbenv local --unset # leave the environment rbenv rehash # update shims fpm --version But instead I get: rbenv: fpm: command not found The `fpm' command exists in these Ruby versions: 2.4.1 Have I misunderstood how rbenv shims work? Can I execute a gem from

问题 Bundler could not find compatible versions for gem "railties": In Gemfile: rails (= 3.2.3) ruby depends on railties (= 3.2.3) ruby jquery-rails (= 2.0.0) ruby depends on railties (3.2.5) I have got that error message while trying to "bundle install" and here is my gemfile source 'https://rubygems.org' gem 'rails', '3.2.3' # Bundle edge Rails instead: # gem 'rails', :git => 'git://github.com/rails/rails.git' group :development do gem 'sqlite3', '1.3.5' end gem 'json' # Gems used only for

问题 How is it possible to create interdependent gems, and still use Bundler? Right now, if the Gemfile for library-a reads like this: gem 'library-b' gem 'library-c' And the Gemfile for library-b reads like this: gem 'library-a' gem 'library-c' And the Gemfile for library-c reads: gem 'library-a', github: 'library-root/library-a', branch: 'master' gem 'library-b', github: 'library-root/library-b', branch: 'master' When you try to run bundle update and/or bundle install for library-c , this is the

问题 I've installed a tesseract-ocr (0.1.5) gem. Dependencies are also installed (tesseract/3.04.00 and leptonica/1.72) Mac OS X Yosemity. When I do rake db:migrate an error appears: rake aborted! CompilationError: compile error: see logs at /var/folders/xg/g9n7qvns5z1gsr_yjh09n1nm0000gn/T/.ffi-inline-501/d2f8bb8a1867b800ff8ad69a3b850c91521b3760.log /Users/user/.rvm/gems/ruby-2.2.2@project/gems/ffi-inline-0.0.4.3/lib/ffi/inline/compilers/gcc.rb:35:in `compile' /Users/user/.rvm/gems/ruby-2.2.2

问题 I'm making GitHub blog page with Jekyll. I've failed like numerous times and just forked new one and followed README on the repository. It's https://github.com/janczizikow/sleek/blob/master/README.md and I tried to run Inside the directory(master) but this msg keeps coming out. I tried 'gem install bundler' 'gem cleanup' and similar solutions on the internet but still can't fix it. I get that I need another version which is lower one, then how can I remove the current one and install the

问题 Ive seen people using this and used it myself as told to do so. I just dont have a real grasp as what it actually does. I understand fully the bundle install part, but not the --without production part of it. What does this do and why would I want to use it? 回答1: If you have a group inside your Gemfile like group :production do gem 'whatever' end Then when you run your bundle command on your development machine, it won't install the gems intended for use in your production environment.