錯誤試圖讓我的第一個Rails應用程序運行

Question

我有一本名爲「學習Ruby」的書，在rails一節中給出了創建一個簡單的Rails web應用程序的一步一步的步驟。

它說接近尾聲鍵入命令：

./script/generate scaffold addressbook addressbook

但部分的方式，通過我的錯誤：

wrong number of arguments (1 for 2)

我想這是因爲輕微的版本差異，但我不能讓我的rails應用程序工作，並希望這裏有人能夠幫助我？

Answer 1

如果不帶任何參數運行script/generate scaffold，它會告訴你如何使用它：

$ script/generate scaffold 
Usage: script/generate scaffold ModelName [field:type, field:type] 

Options: 
     --skip-timestamps   Don't add timestamps to the migration file for this model 
     --skip-migration    Don't generate a migration file for this model 
     --force-plural    Forces the generation of a plural ModelName 

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: 
    Scaffolds an entire resource, from model and migration to controller and 
    views, along with a full test suite. The resource is ready to use as a 
    starting point for your RESTful, resource-oriented application. 

    Pass the name of the model (in singular form), either CamelCased or 
    under_scored, as the first argument, and an optional list of attribute 
    pairs. 

    Attribute pairs are column_name:sql_type arguments specifying the 
    model's attributes. Timestamps are added by default, so you don't have to 
    specify them by hand as 'created_at:datetime updated_at:datetime'. 

    You don't have to think up every attribute up front, but it helps to 
    sketch out a few so you can start working with the resource immediately. 

    For example, 'scaffold post title:string body:text published:boolean' 
    gives you a model with those three attributes, a controller that handles 
    the create/show/update/destroy, forms to create and edit your posts, and 
    an index that lists them all, as well as a map.resources :posts 
    declaration in config/routes.rb. 

    If you want to remove all the generated files, run 
    'script/destroy scaffold ModelName'. 

Examples: 
    `./script/generate scaffold post` 
    `./script/generate scaffold post title:string body:text published:boolean` 
    `./script/generate scaffold purchase order_id:integer amount:decimal`