Gems Freezing Remember that when you freeze something, it goes in your vendor directory. This is how I was able to run rails on my machine w/o installing the rails gem. However, when I went to create a new project, “rails” wasn't installed, so my machine didn't know WTF rails was. To fix this: I ran

sudo gem install -y rails

Find out what the hell the -y does

 script/generate Model Recipe

• Creates model, unit test, migration and fixtures.

script/generate scaffold Recipe

console

app/controllers/application.rb is the parent of all controllers. If you want a general method for all controllers, put it there.

forms

http://www.og-consulting.com/2006/03/09/ruby-on-rails-insert-multiple-child-records/

• http://wiki.rubyonrails.org/rails/pages/HowToUseCheckBoxes
• http://wiki.rubyonrails.org/rails/pages/CheckboxHABTM

If gems or script/generate whines with this error:

undefined method 'gem' for main:Object
from 1.8/rubygems/custom_require.rb

Then try running

gem update --system

See Also

rails freeze

testing

Excellent tutorial on Roll-your-own http://www.aidanf.net/rails/rails_user_authentication_tutorial

Warnings, and the filtering of the log TODO were eliminated by the tar file found here: http://www.chrissterritt.com/AidanLoginRails2.tar

Good explanation for :before_filter problem with application.rb and friends.

http://api.rubyonrails.org/classes/ActionController/Filters/ClassMethods.html

Request data is available in the params hash. The data dump of the request can be usually be seen in the /log/development.log file.

Ruby/Rails data dumps look something like this:

Parameters: {"game"=>{"event_id"=>"3", "description"=>"A one man game", "players"=>["3", "1"]}}

The rules to remember are:

• Square brackets [] denotes an array.
• Curly braces denotes a hash.

The following examples show how to retrieve crap from the request:

ruby Show kewl ruby data types / methods used to step through data types / collections.

• Don’t need to generate scaffolding / models on existing models when you just add a model

• If you run generate model (see below), it will create the migration step in db/migrate. You can then edit the migration script and run rake:migrate, so you don't have to dork with MySQL stuff when creating a table.

script/generate model Hand

Now, edit the newly created xxx_create_hands.rb file to include the fields, etc.

migrations

• http://wiki.site5.com/Customer_Manual#Ruby_on_Rails
• http://wiki.rubyonrails.org/rails/pages/HowToInstallOnSite5/versions/10
• http://news.gmane.org/gmane.comp.lang.ruby.rails
• http://groups.google.com/group/rubyonrails-talk?hl=en

To detect the version of rails you're running perform the following steps

You can see all the versions of the major components of rails by going to http://localhost:3000/rails/info/properties

Make sure you start your rails application before trying it, though :)

> script/server

You can also use the script/console program.

Go to your rails application's base directory.

> script/console

At the » prompt, type the following:

>> Rails::VERSION::STRING

You should see some output like:

=> "1.2.1"

http://forums.site5.com/showthread.php?t=20695&highlight=dispatch.fcgi

• Create rails app (preferably in ~/apps folder)

rails <myapp>

• Create a subdomain if necessary.

• Create a symlink in the public_html folder that points to your rails app's public folder.

ln -s ~/<railsapp>/public ~/public_html/<somequickname>

• Edit ~/<railsapp>/public/.htaccess, and change

RewriteRule ^(.*)$ dispatch.cgi [QSA,L]

to

RewriteRule ^(.*)$ dispatch.fcgi [QSA,L]

• Edit ~/<railsapp>/config/database.yml and put in database's name, username/password that you use to log into ssh.

• Edit ~/<railsapp>/config/environment.rb and change Note I'm not sure about this one.

#ENV['RAILS_ENV'] ||= 'production'

to

ENV['RAILS_ENV'] = 'development'

Also, follow this link http://forums.site5.com/showthread.php?t=11954 for more junk on rails on site5.  I also have this link bookmarked / cached.

The Dispatch.fcgi that comes with rails XXX has an incorrect bang! operator for Site5.

Old

#!/opt/local/bin/ruby

New

#!/opt/local/bin/ruby

• Web Error log is located at https://proxy-netadmin-10761.backstage.site5.com/frontend/na4/stats/errlog.html

I've recently found that just issuing the touch -m command on public/dispatch.fcgi will do a server restart. This is much better than the previous way of having to search for ruby dispatch.fcgi that belong to You, and killing the pids.

From the root of your rails app:

touch -m public/disptach.fcgi

See

See chapter 16.3 in AWDWR

map.connect '', :controller => "time_entries"

Best tutorial I've found so far:

http://www.aidanf.net/rails_user_authentication_tutorial

See also SaltedHash

http://wiki.rubyonrails.com/rails/pages/SaltedLoginGeneratorQuickstart

Make sure that “From” e-mail address is set up in

config/environments/user_environment.rb

Rails

* Rails will choose the layout in the app/views/layouts directory that has the same name of the controller that's handling a request that has the same name of the controller

content_for_layout variable is a “magic” one, whose content is rendered by Rails.

So if you put <%= @content_for_layout %> somewhere, then the layout will receive all the doodoo that's in the xxx.rhtml page that's using the layout.

ERb = “Embedded Ruby”

link_to_unless_current = a function in Rails that creates a link to a page, unless it's the current page! Yippee!

The link_to function uses routes.rb to figure out where to create the link to. For example,you can put in link_to :action⇒index,and rails figures out which index you're talking ab00t

Stylesheets are located in public/<controller>.css, methinks. Pge 40 RailsSpace

Start using styles immediately for your aep, and thinking about presentations and layouts, etc.

C» usr.save ⇒ false

usr.errors.on(:screen_name)

⇒ “is too short (minimum is 4 characters)”

usr.errors.on(:password)

⇒ “is too short (minimum is 4 characters)”

Ctrl-N is the auto-complete crap for vim. use reload! to reload the environment in irb

TODO: get new \1, \2, etc from mappings.vim

capistrano

Check the error logs on Site5's backdoor application. If it's whining about some permissions, change the permissions to the public folder in the app/current/public folder to 755 BEOTCH! TODO: Check the URLs above for hints about how to chmod 755 pubic erectory fodler.

Error when trying to run script/console on Edgy.

http://www.ruby-forum.com/topic/80494

solution:

sudo ln -s /usr/bin/irb1.8 /usr/bin/irb

Problem : When first setting up a database on Ubuntu Edgy, you get No such file or directory - /tmp/mysql.sock Solution: Specify socket: /path/to/socket.sock in config/database.yml for the database you're running on Ubuntu. (Note, make sure you don't have the socket: token on production, if it's not needed.)

production:

adapter: mysql
socket : /var/run/mysqld/mysqld.sock
...

Craig's Opinion on Rails Projects

• http://groups.google.com/group/stlruby/msg/0e398564badc3c99

Rails Generator

rails_todo