Rails的摹迁移不起作用

轨摹迁移migration_name

我会得到 “错误” 消息：

Usage: 
    rails new APP_PATH [options] 

Options: 
    -r, [--ruby=PATH]    # Path to the Ruby binary of your choice 
           # Default: /Users/radek/.rvm/rubies/ruby-1.9.2-p290/bin/ruby 
    -b, [--builder=BUILDER]  # Path to a application builder (can be a filesystem path or URL) 
    -m, [--template=TEMPLATE]  # Path to an application template (can be a filesystem path or URL) 
     [--skip-gemfile]   # Don't create a Gemfile 
     [--skip-bundle]   # Don't run bundle install 
    -G, [--skip-git]    # Skip Git ignores and keeps 
    -O, [--skip-active-record]  # Skip Active Record files 
    -S, [--skip-sprockets]   # Skip Sprockets files 
    -d, [--database=DATABASE]  # Preconfigure for selected database (options: mysql/oracle/postgresql/sqlite3/frontbase/ibm_db/sqlserver/jdbcmysql/jdbcsqlite3/jdbcpostgresql/jdbc) 
           # Default: sqlite3 
    -j, [--javascript=JAVASCRIPT] # Preconfigure for selected JavaScript library 
           # Default: jquery 
    -J, [--skip-javascript]  # Skip JavaScript files 
     [--dev]     # Setup the application with Gemfile pointing to your Rails checkout 
     [--edge]     # Setup the application with Gemfile pointing to Rails repository 
    -T, [--skip-test-unit]   # Skip Test::Unit files 
     [--old-style-hash]   # Force using old style hash (:foo => 'bar') on Ruby >= 1.9 

Runtime options: 
    -f, [--force] # Overwrite files that already exist 
    -p, [--pretend] # Run but do not make any changes 
    -q, [--quiet] # Suppress status output 
    -s, [--skip]  # Skip files that already exist 

Rails options: 
    -h, [--help]  # Show this help message and quit 
    -v, [--version] # Show Rails version number and quit 

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

    You can specify extra command-line arguments to be used every time 
    'rails new' runs in the .railsrc configuration file in your home directory. 

    Note that the arguments specified in the .railsrc file don't affect the 
    defaults values shown above in this help message. 

Example: 
    rails new ~/Code/Ruby/weblog 

    This generates a skeletal Rails installation in ~/Code/Ruby/weblog. 
    See the README in the newly created application to get going.

这是第一次当我收到这条消息时。在其他项目中，这个命令运行良好，但在这里我仍然得到这个消息...

是什么原因造成的？我错过了什么吗？（是的，我在各个项目的根目录中）

来源

2012-09-09 user984621

您没有在rails生成的项目目录中运行它。你在外面跑它。

编辑：它也可能是如果脚本文件夹丢失。或者脚本文件夹中缺少rails脚本，如果在项目文件夹中执行它。

来源

2012-09-09 08:28:12 av501

我里面......这就是为什么它的怪异。 – user984621

然后，它不能够看到它应该的一些文件。此文件夹中的任何权限问题？ – av501

你的脚本文件夹特别缺失？它是否具有rails脚本并且可执行？ – av501

我有一样的，我固定做：

cd /root/path/to/your/project 

bundle install 

bundle update

瞧:)

来源

2014-10-02 11:15:22 Carl

Rails的摹迁移不起作用

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