Sinatra First Blog attempt

After getting Xcode for Snow leopard correctly installed and restarting. The basic sinatra works correctly.

hi.rb
----

require 'rubygems'
require 'sinatra'
get '/hi' do
  "Hello World!"
end

Command line:

$ gem install sinatra
$ ruby hi.rb

Then checkout 127.0.0.1:4567.

Turning it an almost blog, with some erb and an sqlite 3 database.
Assuming you have macports installed you can do (or look up installing sqlite3):
$ sudo port install sqlite3

cd Sinatra_dir
sqlite3 blog
#you are now in the sqlite command prompt
sqlite> create table posts (title text, body text );
sqlite> insert into posts  values('title1','Very long article');
sqlite> insert into posts  values('Sinatra Blog Post','text text text text text');

hi.rb
----

require 'rubygems'
require 'sinatra'
require 'active_record'
 
ActiveRecord::Base.establish_connection(
   :adapter => 'sqlite3',
   :dbfile =>  'blog.db'
) 
class Post < ActiveRecord::Base
end
 
get '/news/?' do
  @posts = Post.all()
  erb :index
end

Now create ./views/index.erb
----

HelloWorld!
 
<% for post in @posts %>
 < h 1><%= post.title %>< / h 1>
 < p ><%= post.body%>< / p> 
<% end %>

$ ruby hi.rb and goto 127.0.0.1:4567.
If all goes well you should see some thing like this:

Problems with Snow Leopard and Ruby Gems

UPDATE 2 (update 1 at the bottom with some extra ruby version info)
When you install Xcode make sure is is the latest version. I must have at some point installed the old Leopard version. then when things did not work reinstalled that same old version. I found xcode321_10m2003 in my downloads folder not the older one I had put in a software folder. You may still need to update Ruby to a new version.

Make sure you have the latest Xcode.

---

I have been trying to get the very simple Sinatra (a light ruby on Rails) setup working following the verysimple instructions on http://www.sinatrarb.com/

Make a file called hi.rb with this inside:

require 'rubygems'
require 'sinatra'
get '/hi' do
 "Hello World!"
end

Then run these commands:

$ gems install sinatra
$ ruby hi.rb

They fail with:

hi.rb:2:in `require': no such file to load -- rubygems (LoadError)
from hi.rb:2

After removing the require 'rubygems', is it actually still required ?

hi.rb:3:in `require': no such file to load -- sinatra (LoadError)
from hi.rb:3

To fix this I ran through the instructions at http://hivelogic.com/articles/compiling-ruby-rubygems-and-rails-on-snow-leopard/

Their instructions worked well until the mysql gem which I do not require at the moment but do like to get my set up the same as the tutorial. I found the following line on stackoverflow.

$ sudo env ARCHFLAGS="-arch x86_64" gem install mysqlplus

Finally got the basic sinatra working by calling:

$ /usr/local/bin/ruby hi.rb

Even though which ruby returns /usr/local/bin/ruby, so why does ruby hi.rb not just work!

What is going on just thought I would check to see if calling the other ruby breaks it, but it works fine.

$ /usr/bin/ruby hi.rb

UPDATE
For completeness and to answer Spyro7's Question:
$ /usr/local/bin/ruby -v
> ruby 1.8.7 (2009-06-12 patchlevel 174) [i686-darwin10.2.0]

$ /usr/bin/ruby -v
> ruby 1.8.7 (2008-08-11 patchlevel 72) [universal-darwin10.0]

mac ports since OS X Snow Leopard upgrade

Since upgrading to Snow Leopard I have noticed that Mac Ports (Previously called Darwin Ports) started giving me lots of errors. So I manually downloaded and installed the latest version, from here.

I then had to run through the insructions here [1] to clean every thing up:
[1] http://trac.macports.org/wiki/Migration

$ port installed > myports.txt
$ sudo port clean all
$ sudo port -f uninstall installed

The look through myports.txt and install any you need.

$ sudo port install fping scite