Elton's Blog

Tag: ruby

Ruby on Rails: RubyGem version error: rack(1.0.0 not ~> 1.0.1) (RuntimeError)

by Elton on 2010年03月7日, under Rails

当你升级了rails后，有时候会出现rack版本跟rails版本不匹配的情况。 当你执行./script/generate命令的时候，会出现以下错误信息：

  1.  
  2. /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:271:in `require_frameworks‘: RubyGem version error: rack(1.0.0 not ~> 1.0.1) (RuntimeError)
  3.         from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:134:in `process’
  4.         from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in `send‘
  5.         from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in `run’
  6.         from /Volumes/Data/study/ruby/blog/config/environment.rb:9
  7.         from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require‘
  8.         from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require’
  9.         from /Library/Ruby/Gems/1.8/gems/rails-2.3.5/lib/commands/generate.rb:1
  10.         from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `gem_original_require‘
  11.         from /Library/Ruby/Site/1.8/rubygems/custom_require.rb:31:in `require’
  12.         from ./script/generate:3
  13.  

解决方案：

  1.  
  2. $ sudo gem uninstall rack
  3.  
  4. Select gem to uninstall:
  5.  1. rack-1.0.0
  6.  2. rack-1.1.0
  7.  3. All versions
  8. > 1
  9.  
  10. You have requested to uninstall the gem:
  11.         rack-1.0.0
  12. actionpack-2.3.5 depends on [rack (~> 1.0.0)]
  13. actionpack-2.3.4 depends on [rack (~> 1.0.0)]
  14. If you remove this gems, one or more dependencies will not be met.
  15. Continue with Uninstall? [Yn]  y
  16. Successfully uninstalled rack-1.0.0
  17.  

然后再执行

  1.  
  2. sudo gem install -v=2.3.5 rails
  3.  
  4. Successfully installed rack-1.0.1
  5. 1 gem installed
  6. Installing ri documentation for rack-1.0.1…
  7. Installing RDoc documentation for rack-1.0.1…
  8.  

问题解决

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在snow leopard上编译Ruby, RubyGems, 和Rails

by Elton on 2009年10月1日, under Mac, Rails

准备：

  1. Snow Leopard系统
  2. XCode编译环境，Snow Leopard系统盘上有

第一步：设置路径

  1.  
  2. vim ~/.profile
  3.  

在文件最后加上：

  1.  
  2. export PATH="/usr/local/bin:/usr/local/sbin:/usr/local/mysql/bin:$PATH"
  3.  

使新的路径生效

  1.  
  2. source ~/.profile
  3.  

第二步：下载源文件

  1.  
  2. curl -O ftp://ftp.ruby-lang.org/pub/ruby/1.8/ruby-1.8.7-p174.tar.gz
  3. curl -O http://files.rubyforge.vm.bytemark.co.uk/rubygems/rubygems-1.3.5.tgz
  4.  

第三步：编译安装
安装ruby

  1.  
  2. tar xzvf ruby-1.8.7-p174.tar.gz
  3. cd ruby-1.8.7-p174
  4. ./configure –enable-shared –enable-pthread CFLAGS=-D_XOPEN_SOURCE=1
  5. make
  6. sudo make install
  7. cd ..
  8.  

安装rubygem

  1.  
  2. tar xzvf rubygems-1.3.5.tgz
  3. cd rubygems-1.3.5
  4. sudo /usr/local/bin/ruby setup.rb
  5. cd ..
  6.  

安装rails

  1.  
  2. sudo gem install rails
  3.  

安装ruby的mysql驱动

  1.  
  2. sudo gem install mysql — –with-mysql-dir=/usr/local/mysql
  3.  

MySQL使用官方的dmg安装即可。

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no such file to load — sqlite3问题解决

by Elton on 2009年08月23日, under Rails

从rails2.0.2以后，rails默认的数据库是sqlite3了。 所以如果你使用rails appName命令建立应用的话，使用的是sqlite数据库。

作为开发和测试，使用sqlite3数据库倒是可以。如果你在运行应用的时候出现了

  1.  
  2. no such file to load — sqlite3
  3.  

这个错误，说明你没有安装sqlite的ruby驱动。 使用以下命令可以安装此驱动

  1.  
  2. sudo gem install sqlite3-ruby
  3.  

安装成功后，上面的问题就解决了。

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Leopard下手工安装ruby,rails和mysql

by Elton on 2009年08月23日, under Mac, Rails

1. 安装readline
ftp://ftp.gnu.org/gnu/readline/

  1.  
  2. cd readline-6.0
  3. ./configure –prefix=/usr/local
  4. make
  5. sudo make install
  6.  

2. 安装ruby

  1.  
  2. tar xvjf ruby-1.8.7-p174.tar.bz2
  3. cd ruby-1.8.7-p174
  4. ./configure –prefix=/usr/local/ruby –enable-pthread –with-readline-dir=/usr/local –enable-shared
  5. make
  6. sudo make install
  7. sudo make install-doc
  8.  

使用ruby -v来确认版本安装正确

3. 安装mysql

  1.  
  2. /configure –prefix=/usr/local/mysql –with-extra-charsets=complex –enable-thread-safe-client –enable-local-infile –enable-shared –with-plugins=max-no-ndb
  3. make
  4. sudo make install
  5. cd /usr/local/mysql
  6. sudo ./bin/mysql_install_db –user=mysql
  7. sudo chown -R mysql ./var/
  8.  

mac os x 是靠 launchd 守护进程运行的, 配置文件用的是 PropertyList (XML 格式), 通过观察发现每10秒检查一次, 发现进程不在就启动.

方法是新建 /Library/LaunchDaemons/com.mysql.mysqld.plist 写入如下内容.

  1.  
  2. <?xml version="1.0" encoding="UTF-8"?>
  3. <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
  4. <plist version="1.0">
  5. <dict>
  6.         <key>KeepAlive</key>
  7. <true />
  8.         <key>Label</key>
  9.         <string>com.mysql.mysqld</string>
  10.         <key>Program</key>
  11.         <string>/usr/local/mysql/bin/mysqld_safe</string>
  12.         <key>RunAtLoad</key>
  13. <true />
  14.         <key>UserName</key>
  15.         <string>mysql</string>
  16.         <key>WorkingDirectory</key>
  17.         <string>/usr/local/mysql</string>
  18.         </dict>
  19. </plist>
  20.  

加入守护清单
sudo launchctl load -w /Library/LaunchDaemons/com.mysql.mysqld.plist

查看清单
launchctl list

解除守护
sudo launchctl unload -w /Library/LaunchDaemons/com.mysql.mysqld.plist

4. 安装mysql的c驱动

http://rubyforge.org/fsr/download.php/51087/mysql-ruby-2.8.1.tar.gz

  1.  
  2. tar xzvf mysql-ruby-2.8.1.tar.gz
  3. cd mysql-ruby-2.8.1
  4. ruby extconf.rb –with-mysql-dir=/usr/local/mysql
  5. make
  6. sudo make instal
  7.  

如果出现类似以下的错误

  1.  
  2. checking for mysql_query() in -lmysqlclient… no
  3. checking for main() in -lm… yes
  4. checking for mysql_query() in -lmysqlclient… no
  5. checking for main() in -lz… yes
  6. checking for mysql_query() in -lmysqlclient… no
  7. checking for main() in -lsocket… no
  8. checking for mysql_query() in -lmysqlclient… no
  9. checking for main() in -lnsl… no
  10. checking for mysql_query() in -lmysqlclient… no
  11. checking for main() in -lmygcc… yes
  12. checking for mysql_query() in -lmysqlclient… no
  13. *** extconf.rb failed ***
  14. Could not create Makefile due to some reason, probably lack of
  15. necessary libraries and/or headers.  Check the mkmf.log file for more
  16. details.  You may need configuration options.
  17.  

就换用

  1.  
  2. sudo ruby extconf.rb –with-mysql-config
  3.  
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