vscode搭建ruby IDE（mac os）

首先下载vscode，安装

• 1. 安装扩展

command + shift + p 安装扩展，搜索ruby，安装ruby扩展，并且启用

If you are using Ruby v2.x
gem install ruby-debug-ide -v 0.4.32 or higher versions
gem install debase -v 0.2.1 or higher versions

• 2. 运行项目

打开rails项目，command + shift + d, 设置launch.json,我的配置如下：

{
    // 使用 IntelliSense 了解相关属性。
    // 悬停以查看现有属性的描述。
    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Debug Local File",
            "type": "Ruby",
            "request": "launch",
            "cwd": "${workspaceRoot}",
            "program": "${workspaceRoot}/main.rb",
        },
        {
            "name": "Rails server",
            "type": "Ruby",
            "request": "launch",
            "cwd": "${workspaceRoot}",
            "program": "${workspaceRoot}/bin/rails",
        }
    ]
}

然后运行，报如下错误：

Ignoring websocket-driver-0.7.0 because its extensions are not built.  Try: gem pristine websocket-driver --version 0.7.0
Ignoring websocket-driver-0.6.5 because its extensions are not built.  Try: gem pristine websocket-driver --version 0.6.5
/System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:120:in `require': cannot load such file -- debase (LoadError)
	from /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:120:in `require'
	from /Users/niejingfa/.rvm/gems/ruby-2.5.1/gems/ruby-debug-ide-0.6.1/lib/ruby-debug-ide.rb:9:in `<top (required)>'
	from /Users/niejingfa/.rvm/gems/ruby-2.5.1/gems/ruby-debug-ide-0.6.1/bin/rdebug-ide:8:in `require_relative'
	from /Users/niejingfa/.rvm/gems/ruby-2.5.1/gems/ruby-debug-ide-0.6.1/bin/rdebug-ide:8:in `<top (required)>'
	from /Users/niejingfa/.rvm/gems/ruby-2.5.1/bin/rdebug-ide:26:in `load'
	from /Users/niejingfa/.rvm/gems/ruby-2.5.1/bin/rdebug-ide:26:in `<main>'
	from /Users/niejingfa/.rvm/gems/ruby-2.5.1/bin/ruby_executable_hooks:24:in `eval'
	from /Users/niejingfa/.rvm/gems/ruby-2.5.1/bin/ruby_executable_hooks:24:in `<main>'

• 3. 开始找问题

我的终端运行rails s没有问题，再vscode的终端设置rvm的ruby版本，然后rails s也没问题， 很奇怪，然后我关掉vscode终端，在打开，输入ruby -v，如下：

niejingfadeMacBook-Pro% ruby -v
ruby 2.3.7p456 (2018-03-28 revision 63024) [universal.x86_64-darwin17]
niejingfadeMacBook-Pro% rvm list
   ruby-2.1.4 [ x86_64 ]
=* ruby-2.5.1 [ x86_64 ]

# => - current
# =* - current && default
#  * - default

• 4. 分析问题

我的rvm里没有2.3.7的ruby版本，怎么vscode使用的是我本地没有的版本呢？ 原来是mac系统自带的ruby版本，并没有放入rvm中。

• 5. 解决问题

要vscode加载我的rvm，并且用里面的ruby版本

在github中找到配置的资料，详情请看这里 在终端输入以下命令：

printf "\n\"env\": {\n  \"PATH\": \"$PATH\",\n  \"GEM_HOME\": \"$GEM_HOME\",\n  \"GEM_PATH\": \"$GEM_PATH\",\n  \"RUBY_VERSION\": \"$RUBY_VERSION\"\n}\n\n"

得到我的rvm环境路径和ruby环境路径：

niejingfadeMacBook-Pro% printf "\n\"env\": {\n  \"PATH\": \"$PATH\",\n  \"GEM_HOME\": \"$GEM_HOME\",\n  \"GEM_PATH\": \"$GEM_PATH\",\n  \"RUBY_VERSION\": \"$RUBY_VERSION\"\n}\n\n"

"env": {
  "PATH": "/Users/niejingfa/.rvm/gems/ruby-2.5.1@redmine/bin:/Users/niejingfa/.rvm/gems/ruby-2.5.1@global/bin:/Users/niejingfa/.rvm/rubies/ruby-2.5.1/bin:/Users/niejingfa/.rvm/bin:/bin:/usr/bin:/usr/local/bin:/usr/local/opt/sqlite/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/opt/sqlite/bin:/usr/local/opt/mysql@5.7/bin:/usr/local/etc:/usr/local/opt/mysql@5.7/bin:/usr/local/etc:/usr/local/opt/mysql@5.7/bin:/usr/local/etc",
  "GEM_HOME": "/Users/niejingfa/.rvm/gems/ruby-2.5.1@redmine",
  "GEM_PATH": "/Users/niejingfa/.rvm/gems/ruby-2.5.1@redmine:/Users/niejingfa/.rvm/gems/ruby-2.5.1@global",
  "RUBY_VERSION": "ruby-2.5.1"
}

然后把这个配置加入launch.json中，就可以快乐的debug和运行了

---

我的launch.json配置：

{
    // 使用 IntelliSense 了解相关属性。
    // 悬停以查看现有属性的描述。
    // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Debug Local File",
            "type": "Ruby",
            "request": "launch",
            "cwd": "${workspaceRoot}",
            "program": "${workspaceRoot}/main.rb",
            "env": {
                "PATH": "/bin:/usr/bin:/usr/local/bin:/usr/local/opt/sqlite/bin:/Users/niejingfa/.rvm/gems/ruby-2.5.1@redmine/bin:/Users/niejingfa/.rvm/gems/ruby-2.5.1@global/bin:/Users/niejingfa/.rvm/rubies/ruby-2.5.1/bin:/Users/niejingfa/.rvm/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/opt/sqlite/bin:/usr/local/opt/mysql@5.7/bin:/usr/local/etc:/usr/local/opt/mysql@5.7/bin:/usr/local/etc:/Users/niejingfa/.rvm/bin:/usr/local/opt/mysql@5.7/bin:/usr/local/etc",
                "GEM_HOME": "/Users/niejingfa/.rvm/gems/ruby-2.5.1@redmine",
                "GEM_PATH": "/Users/niejingfa/.rvm/gems/ruby-2.5.1@redmine:/Users/niejingfa/.rvm/gems/ruby-2.5.1@global",
                "RUBY_VERSION": "ruby-2.5.1"
              }
        },
        {
            "name": "Rails server",
            "type": "Ruby",
            "request": "launch",
            "cwd": "${workspaceRoot}",
            "program": "${workspaceRoot}/bin/rails",
            "args": [
                "server"
            ],
            "env": {
                "PATH": "/bin:/usr/bin:/usr/local/bin:/usr/local/opt/sqlite/bin:/Users/niejingfa/.rvm/gems/ruby-2.5.1@redmine/bin:/Users/niejingfa/.rvm/gems/ruby-2.5.1@global/bin:/Users/niejingfa/.rvm/rubies/ruby-2.5.1/bin:/Users/niejingfa/.rvm/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/opt/sqlite/bin:/usr/local/opt/mysql@5.7/bin:/usr/local/etc:/usr/local/opt/mysql@5.7/bin:/usr/local/etc:/Users/niejingfa/.rvm/bin:/usr/local/opt/mysql@5.7/bin:/usr/local/etc",
                "GEM_HOME": "/Users/niejingfa/.rvm/gems/ruby-2.5.1@redmine",
                "GEM_PATH": "/Users/niejingfa/.rvm/gems/ruby-2.5.1@redmine:/Users/niejingfa/.rvm/gems/ruby-2.5.1@global",
                "RUBY_VERSION": "ruby-2.5.1"
              }
        }
    ]
}