| I am the owner of lvh.me. And I'm glad to hear it's helpful. In truth, it's just a fancy DNS trick. lhv.me and all of it's sub-domains just point back to your computer (127.0.0.1). That means running ssl is as simple (or difficult) as running ssl on your computer. | |
| I'm not sure how comfortable you are with the command line, but here's my how I setup my development environment. (rvm, passenger, nginx w/ SSL, etc). | |
| # Install rvm (no sudo!) | |
| # ------------------------------------------------------ | |
| bash < <( curl http://rvm.beginrescueend.com/releases/rvm-install-head ) | |
| source ~/.rvm/scripts/rvm | |
| rvm install ree-1.8.7-2010.02 |
| # Configure colors, if available. | |
| if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then | |
| c_reset='\[\e[0m\]' | |
| c_user='\[\e[0;32m\]' | |
| c_path='\[\e[1;34m\]' | |
| c_git_clean='\[\e[0;37m\]' | |
| c_git_staged='\[\e[0;32m\]' | |
| c_git_unstaged='\[\e[0;31m\]' | |
| else | |
| c_reset= |
| STATE_ABBR_TO_NAME = { | |
| 'AL' => 'Alabama', | |
| 'AK' => 'Alaska', | |
| 'AS' => 'America Samoa', | |
| 'AZ' => 'Arizona', | |
| 'AR' => 'Arkansas', | |
| 'CA' => 'California', | |
| 'CO' => 'Colorado', | |
| 'CT' => 'Connecticut', | |
| 'DE' => 'Delaware', |
| class Avatar < ActiveRecord::Base | |
| attr_accessor :content_type, :original_filename, :image_data | |
| before_save :decode_base64_image | |
| has_attached_file :image, | |
| PAPERCLIP_CONFIG.merge( | |
| :styles => { | |
| :thumb => '32x32#', | |
| :medium => '64x64#', |
It's pretty easy to do polymorphic associations in Rails: A Picture can belong to either a BlogPost or an Article. But what if you need the relationship the other way around? A Picture, a Text and a Video can belong to an Article, and that article can find all media by calling @article.media
This example shows how to create an ArticleElement join model that handles the polymorphic relationship. To add fields that are common to all polymorphic models, add fields to the join model.
I've been using this technique in most of my Ruby projects lately where Ruby versions are required:
.rbenv-version containing the target Ruby using a definition name defined in ruby-build (example below). These strings are a proper subset of RVM Ruby string names so far....rvmrc (with rvm --create --rvmrc "1.9.3@myapp") and edit the environment_id= line to fetch the Ruby version from .rbenv-version (example below).Today I learned about another Ruby manager, rbfu, where the author is using a similar technique with .rbfu-version.
| #Model | |
| @user.should have(1).error_on(:username) # Checks whether there is an error in username | |
| @user.errors[:username].should include("can't be blank") # check for the error message | |
| #Rendering | |
| response.should render_template(:index) | |
| #Redirecting | |
| response.should redirect_to(movies_path) |
| # Get Sublime to use your rvm ruby... Change your ~/Library/Application Support/Sublime Text 2/Packages/Ruby/Ruby.sublime-build | |
| # (for ST3: ~/Library/Application Support/Sublime Text 3/Packages/User/Ruby.sublime-build) to this, replacing YOURUSERNAME. | |
| # I am still looking to optimize this further... For example, avoiding hardcoding by using something like $HOME, although | |
| # I have yet to get any form of that to work. | |
| { | |
| "working_dir": "${project_path}", | |
| "cmd": [ | |
| "/Users/YOURUSERNAME/.rvm/bin/rvm-auto-ruby", "-Ilib:test", "$file" | |
| ], |
Many programming languages, including Ruby, have native boolean (true and false) data types. In Ruby they're called true and false. In Python, for example, they're written as True and False. But oftentimes we want to use a non-boolean value (integers, strings, arrays, etc.) in a boolean context (if statement, &&, ||, etc.).
This outlines how this works in Ruby, with some basic examples from Python and JavaScript, too. The idea is much more general than any of these specific languages, though. It's really a question of how the people designing a programming language wants booleans and conditionals to work.
If you want to use or share this material, please see the license file, below.
| # Local Dates: | |
| git log --date=local --pretty=format:"%h%x09%an%x09%ad%x09%s" > commits.local.tsv.txt | |
| # ISO Dates: | |
| git log --date=iso --pretty=format:"%h%x09%an%x09%ad%x09%s" > commits.iso.tsv.txt |