Question

I have a book called ‘Learning Ruby’ and under the section for rails is gives a step-by-step walk through of creating a simple Rails web app.

It says near the end type the command:

./script/generate scaffold addressbook addressbook

But part-way through I get the error:

wrong number of arguments (1 for 2)

I assume this is because a slight version difference, but I cant get my rails application to work, and was hoping somebody here might be able to help me?

Answer 1

If you run script/generate scaffold without any arguments, it will tell you how to use it:

$ 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`