tibbon

class AddUniquenessIndexToYears < ActiveRecord::Migration
  def change
    add_index :years, [:award_id, :book_id], :unique => true
  end
end

tibbon

The following is reference material, and not required reading. For a deeper understanding however it is recommended. For some topics, multiple links have been provided to give different explainations and viewpoints on the topics.

ActiveRecord Naming:

• http://en.wikibooks.org/wiki/Ruby_on_Rails/ActiveRecord/Naming

ActiveRecord Migrations:

• http://api.rubyonrails.org/classes/ActiveRecord/Migration.html
• http://en.wikibooks.org/wiki/Ruby_on_Rails/ActiveRecord/Migrations

tibbon

class Book < ActiveRecord::Base
  # Other stuff should go up here, the following is an example of attr_accessible to allow mass assignment
  # Mass assignment is when you do something like Book.create(title: "1984")
  attr_accessible :title
end

tibbon

These need to be backed up by a migration to create the assemblies_parts table. This table should be created without a primary key:

class CreateAssembliesPartsJoinTable < ActiveRecord::Migration
  def change
    create_table :assemblies_parts, id: false do |t|
      t.integer :assembly_id
      t.integer :part_id
    end
 end

tibbon

# ----------------------------------------------------------------- #
REFERENCES
# ----------------------------------------------------------------- #

http://ndpsoftware.com/git-cheatsheet.html

# ----------------------------------------------------------------- #
BASIC
# ----------------------------------------------------------------- #

tibbon

Macbook Pro:bash_example tibbon$ ls
hello_world.rb  lib
Macbook Pro:bash_example tibbon$ ls -al
total 0
drwxr-xr-x    4 tibbon  staff   136 Jun 16 22:05 .
drwxr-xr-x  151 tibbon  staff  5134 Jun 16 22:04 ..
-rw-r--r--    1 tibbon  staff     0 Jun 16 22:05 hello_world.rb
drwxr-xr-x    3 tibbon  staff   102 Jun 16 22:05 lib
Macbook Pro:bash_example tibbon$ cd lib
Macbook Pro:lib tibbon$ ls

tibbon

This should probably be a blog post, but if I do that then I want to make it readable to others. 

Anyway, I want to get more awesome at the following things (which I already know a bit about each)

- C
- Haskell
- Go
- Python
- Javascript
- Postgres

tibbon

Macbook Pro:chef-guide tibbon$ rake start
vagrant up
There was an error while executing `VBoxManage`, a CLI used by Vagrant
for controlling VirtualBox. The command and stderr is shown below.

Command: ["--version"]

Stderr: dyld: Library not loaded: /Applications/VirtualBox.app/Contents/MacOS/VBoxRT.dylib
  Referenced from: /Applications/VirtualBox.app/Contents/MacOS/VBoxManage
  Reason: no suitable image found.  Did find:

tibbon

def test(x, get_user_ids, get_user_ids)
    get_user_ids.call(x) do | y |
        get_user_ids.call(y)
    end
end

def get_user_ids x
    for i in 1 .. 5
        yield x * i
    end

tibbon

def test(x, func1, func2)
    func1.call(x) do | y |
        func2.call(y)
    end
end

#change func1 to a method
def func1 x
    for i in 1 .. 5
        yield x * i