An = is represented by =3D in the log file.

I got confused by the leading 3D which is not part of the token, you can see in the following example:

Hallo Max!

Danke f=C3=BCr deinen Beitrag. Bitte best=C3=A4tige deine Teilnahme, inde=
m du auf den folgenden Link klickst:

  http://localhost:3000/beitraege/13/confirm?token=3DEA7BB9DA73FF17AO

Viele Gr=C3=BC=C3=9Fe vom Team!

My token is actually only EA7BB9DA73FF17AO.

Geordi, our collection of command line tools, has been extended by another command deploy-to-production. This script encapsulates the following workflow:

• Pull the production branch.
• Show which commits from the master would make it to production with this deploy.
• Ask if you want to proceed.
• If yes, merge the master into the production branch, push and deploy with bundle exec cap production deploy:migrations

The script will ask you for the names of your master branch, production branch an...

• You can define what will be printed by checking View -> Preview Page Breaks and then moving around the blue borders.
• You can now define the size of the printed content under Format -> Page -> Sheet -> Scale. You can choose between three scaling modes which all suck in their own way.

After installing Bundler 1.1 you will get the following warning when running tests:

WARNING: Cucumber-rails required outside of env.rb. The rest of loading is being defered until env.rb is called.\
To avoid this warning, move 'gem cucumber-rails' under only group :test in your Gemfile

The warning is misleading because it has nothing to do with moving cucumber-rails into a :test group. Instead you need to change your Gemfile to say:

gem 'cucumber-rails', :require => false

Solution to share a todo.txt file over Dropbox and make it editable on Android und iOS devices. Also comes with a CLI interface for common actions like adding a new task or listing all tasks pertaining to a GTD context.

Unfortunately it only supports flat todo lists, no nesting.

validates_acceptance_of :terms only works if terms is set to a value. The validation is skipped silently when terms is nil.

While this behavior is useful to validate acceptance in the frontend and not the admin backend, it also makes it very easy to unintentionally skip the validation altogether by forgetting to add the checkbox to a form. E.g. validates_acceptance_of :terms_with_typo will be skipped silently even if there is no column with t...

When you create a new branch and push it to origin, you won't be tracking it. This means a git pull won't know its remote version.

You could use difficult commands to set up a branch's tracking but it's easier to just push it like this:

git push -u

From the documentation on git push:

-u, --set-upstream
For every branch that is up to date or successfully pushed, add upstream (tracking) reference, used by argument-less git-pull(1) and other commands. For more information, see branch.<nam...

You won't usually have to do this. It's OK to route all formats to a controller, and let the controller decide to which format it wants to respond.

Should you for some reason want to define a route that only responds to a given format, here is how you do it:

Rails 3

match 'sitemap.xml' => 'feeds#sitemap', :constraints => { :format => 'xml' }, :as => 'sitemap'

Rails 2

map.sitemap 'sitemap.xml', :controller => 'feeds', :action => 'sitemap', :format => 'xml'

When talking to your MySQL server via a mysql shell, you can terminate queries by ; or \G -- the latter gives you a vertical output.

You know this:

mysql> SELECT * FROM users;
+----+---------+---------------------+-----------------+
| id | name    | email               | greeting        |
+----+---------+---------------------+-----------------+
|  1 | Alice   | alice@example.com   | Hello world!    |
|  2 | Bob     | bob@example.com     | Hello universe! |
|  3 | Charlie | charlie@example.com | Hi mom!    ...

This is a demo of the "Tabby" Javascript jQuery plugin to use tabs in regular textareas to make them suitable for in-browser coding of languages like HTML, CSS, Javascript, or your favorite server-side language. The idea is to be able to use a press of the TAB button or SHIFT+TAB to indent or outdent your code.

This will give you the string that appears most often in an array:

names = %w[ foo foo bar bar bar baz ]
names.group_by(&:to_s).values.max_by(&:size).try(:first)
=> "bar"

This is very similar to the linked StackOverflow thread, but does not break on empty arrays.

Note that try is provided by ActiveSupport (Rails). You could explicitly load activesupport or use andand on plain Ruby.

KeyboardJS is a library for binding to keys or key combos

Usually you don't need to, but when you want to see which queries your MySQL server currently needs to handle (and if there are locks, etc), you could say SHOW PROCESSLIST in a MySQL shell.

Unfortunately, SHOW PROCESSLIST does not allow filtering. When you are on MySQL ≥ 5.1.7, do this instead:

SELECT * FROM information_schema.processlist WHERE command != 'Sleep' ORDER BY id;

That also allows you to only show some values or order differently, like so:

SELECT user, time, state, info FROM information_schema.processlist WHERE co...

In some older Capybara versions (e.g. 0.3.9), we're getting lots of deprecations warnings:

Selenium::WebDriver::Element#select is deprecated. Please use Selenium::WebDriver::Element#click and determine the current state with Selenium::WebDriver::Element#selected?

Hani-elabed on Github helps. Add this code to features/support/env.rb to remove them temporarily:

# June 30th, 2011
# a temporary hack to disable the annoying upstream warnings capybara > selenium-webdriver 0.2.2
# capybara folks know about this and are working on it. S...

When you are using NAT in your virtual machine (which you should), the host's IP address is:

10.0.2.2

You'll need it to access shared folders or your host's web server when testing pages in IE.

Fun fact: You could also use vbox.srv -- that's the corresponding hostname.

When you regularly make use of Cucumber's "show me the page" step (or let pages pop up as errors occur), the capybara-20120326132013.html files will clutter up your Rails root directory.

To tell Capybara where it should save those files instead, put this into features/support/env.rb:

Capybara.save_and_open_page_path = 'tmp/capybara'

After you configured your ODBC describe in

• Fix [RubyODBC]Cannot allocate SQLHENV when connecting to MSSQL 2005 with Ruby 1.8.7. on Ubuntu 10.10
• and Connecting to MSSQL with Ruby on Ubuntu - lambie.org

you can connect with sequel:

require "rubygems"
require "se...

I followed this nice guide Connecting to MSSQL with Ruby on Ubuntu - lambie.org until I ran in the following errors:

irb(main):001:0> require "dbi"; dbh = DBI.connect('dbi:ODBC:MyLegacyServer', 'my_name', 'my_password')

DBI::DatabaseError: INTERN (0) [RubyODBC]Cannot allocate SQLHENV
  from /usr/lib/ruby/1.8/dbd/odbc/driver.rb:36:in `connect'
  from /usr/lib/ruby/1.8/dbi/handles/driver.rb:33:in `connect'
  from /usr/lib/ruby...

This is one possibility to do this. There are other and maybe even better ways to do this.

1. Generate a key for your encrypted harddisk:

   dd if=/dev/random of=/home/bob/keyfile_sdb1 bs=4096 count=1
   

2. Then add your keyfile to encrypted harddisk: How to change your dm-crypt passphrase (step 3)

3. Create a mountpoint:

   mkdir /mnt/space
   

4. Create a script e.g. in your homedirectory (/home/bob/mount_sdb1.sh):

   #!bin/bash
   
   ...
   

When you do a script/dbconsole -p, your MySQL shell will already be using UTF-8. When you call it yourself using mysql, it may not be enabled.

You'll notice that when you get ASCII salad and/or question marks instead of special characters. \
Example: Hlavn� m?sto Praha instead of Hlavní město Praha.

You need to manually switch on UTF-8, in the MySQL console:

SET NAMES 'utf8';

We love Markdown. We use it wherever we can for text formatting. In a web app, the obvious place for it is in large text areas, where we can allow complete freedom of formatting. Headers, paragraphs, lists, it’s all good.

What about the formatting of text in single-line text fields? If our form entry is a single line, that’s usually how its text will be displayed in our interface. In this case, we probably want to avoid all the block-level elements that Markdown will let the user create.

Nice article to educate your non-geek girlfriend/boyfriend about the joys of programming.

This is surprisingly difficult when there is a <textarea> with the same text on the page, but you really want to see the letters as static text in a <p> or similiar.

The step definition below lets you say:

Then I should see the text "foo"

You should not look too closely at the step definition because when you see the light, it will blind you.

Then /^I should see the text "(.*?)"$/ do |text|
  elements = page.all('*', :text => text).reject { |element| element.tag_name == 'textarea' || element.all('*', :text => text...