Rails的摹遷移不起作用

軌摹遷移migration_name

我會得到「錯誤」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.

這是第一次當我收到這條消息時。在其他項目中，這個命令運行良好，但在這裏我仍然得到這個消息...

是什麼原因造成的？我錯過了什麼嗎？（是的，我在各個項目的根目錄中）

來源

2012-09-09 user984621

您沒有在rails生成的項目目錄中運行它。你在外面跑它。

編輯：它也可能是如果腳本文件夾丟失。或者腳本文件夾中缺少rails腳本，如果在項目文件夾中執行它。

來源

2012-09-09 08:28:12 av501

我裏面......這就是爲什麼它的怪異。 – user984621

然後，它不能夠看到它應該的一些文件。此文件夾中的任何權限問題？ – av501

你的腳本文件夾特別缺失？它是否具有rails腳本並且可執行？ – av501

我有一樣的，我固定做：

cd /root/path/to/your/project 

bundle install 

bundle update

瞧:)

來源

2014-10-02 11:15:22 Carl

Rails的摹遷移不起作用

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