rails new <app_name> command </app_name>中没有-T选项

时间:2011-05-29 16:41:50

标签: ruby-on-rails ruby-on-rails-3 rspec

我正在按照http://ruby.railstutorial.org/中的教程学习ruby on rails。

当我尝试创建一个新项目时,我收到无效选项错误,

user1@ubuntu:~/rails_projects$ rails new sample_app -T
**invalid option: -T**

我也没有在rails手册页中找到-T选项。

user1@ubuntu:~/rails_projects$ rails --help new
Usage: /usr/share/rails-ruby1.8/railties/bin/rails /path/to/your/app [options]

Options:
    -r, --ruby=path                  Path to the Ruby binary of your choice (otherwise scripts use env, dispatchers current path).
                                     Default: /usr/bin/ruby1.8
    -d, --database=name              Preconfigure for selected database (options: mysql/oracle/postgresql/sqlite2/sqlite3/frontbase/ibm_db).
                                     Default: sqlite3
    -D, --with-dispatchers           Add CGI/FastCGI/mod_ruby dispatches code to generated application skeleton
                                     Default: false
        --freeze                     Freeze Rails in vendor/rails from the gems generating the skeleton
                                     Default: false
    -m, --template=path              Use an application template that lives at path (can be a filesystem path or URL).
                                     Default: (none)

Rails Info:
    -v, --version                    Show the Rails version number and quit.
    -h, --help                       Show this help message and quit.

General Options:
    -p, --pretend                    Run but do not make any changes.
    -f, --force                      Overwrite files that already exist.
    -s, --skip                       Skip files that already exist.
    -q, --quiet                      Suppress normal output.
    -t, --backtrace                  Debugging: show backtrace on errors.
    -c, --svn                        Modify files with subversion. (Note: svn must be in path)
    -g, --git                        Modify files with git. (Note: git must be in path)

Description:
    The 'rails' command creates a new Rails application with a default
    directory structure and configuration at the path you specify.

Example:
    rails ~/Code/Ruby/weblog

    This generates a skeletal Rails installation in ~/Code/Ruby/weblog.
    See the README in the newly created application to get going.
user1@ubuntu:~/rails_projects$ rvm notes

任何想法为什么它不可用。

感谢您的帮助。

这是ruby&amp; rails安装细节,

user1@ubuntu:~/rails_projects$ rails -v
Rails 2.3.5
user1@ubuntu:~/rails_projects$ ruby -v
ruby 1.8.7 (2010-08-16 patchlevel 302) [i686-linux]
user1@ubuntu:~/rails_projects$ 

1 个答案:

答案 0 :(得分:2)

显然您使用的是旧版本的rails(可能是2.x),但使用Rails 3.x语法来创建应用程序。请注意您问题中的示例:

Example:
    rails ~/Code/Ruby/weblog

因此,省略“new”并输入rails sample_app。这是用于在旧版本(<3.x)的rails中创建应用程序的命令。

在Rails 3.x中,创建新应用的方法是使用“new”:rails new sample_app

理想情况下,您应该使用最新的稳定轨道(v 3.0.x),在这种情况下,您还可以使用-T选项。

使用rvm正确设置系统:

rvm install 1.8.7       #install Ruby 1.8.7
rvm use 1.8.7 --default #always use 1.8.7 by default when you open a terminal
ruby -v                 #should show ruby 1.8.7 .....
gem install rails       #install the latest stable version of Rails
rails -v                #should show Rails 3.something.something
rails --help            #should show you the -T option now

注意:不要输入#及其后的内容..它只是为了显示命令将执行的操作。