To bind an HTML value to ng-bind-html, you need to mark it as "trusted" first. Among other ways, you can do so with a custom filter.

# Filter in Coffeescript...:
@app.filter 'htmlSafe', ['$sce', ($sce) -> $sce.trustAsHtml ]

# ...or JS:
app.filter('htmlSafe', [
  '$sce', function($sce) {
    return $sce.trustAsHtml;
  }
]);

# Usage:
<div ng-bind-html="item.value | htmlSafe"></div>

This is a replacement for the ng-bind-html-unsafe directive which has been removed in Angular 1.2.
:party:

1. Put the font files (e.g. ttf) into ~/.fonts
2. Run fc-cache -v

Or, if you prefer to use the GUI, open each font file and click the "Install" button in the top right of the preview window.

Firefox 5.0.1, which we were using for most Rails 2.3 projects, does not run on Ubuntu 14.04 any more. Here is how to update affected projects.

1. Update (or create) .firefox-version with the content: 24.0
   If you haven't installed Firefox 24 yet, the next time you run tests with Geordi, it will tell you how to install it.

2. On a Rails 2 project:

   • Update your Cucumber-related gems as described in Upgrading Cucumber and Capybara, including cucumber_spinner and launchy.

   • If you...

tlmgr is the TeX Live Manager and responsible for the TeX installation on your (Linux) machine.

If you're getting the message:

(running on Debian, switching to user mode!)
cannot setup TLPDB in /home/dominik/texmf at /usr/bin/tlmgr line 5336.

... tlmgr has not been initialized. Run this to initialize it:

tlmgr init-usertree

Then, you may set e.g. a global paper size standard: tlmgr paper a4.

Defining one callback several times in the same class behaves different in ActiveRecord and ResourceController.
While in ActiveRecord the callbacks are enqueued, they overwrite each other in ResourceController.

ActiveRecord - a common practice

class Post < ActiveRecord::Base
  does 'post/behavior'
  before_validation :do_something
end

module Post::BehaviorTrait
  as_trait do
    before_validation :do_something_else
  end
end

do_something_else and do_something are executed before validation in exactly this order

ResourceC...

Note: Instead of using the method in this card, you probably want to use ActiveType's nested attributes which is a much more refined way of doing this.

The attached Modularity trait allows you to accept nested attributes for a record that is not an association, e.g.:

    class Site < ActiveRecord::Base
      
      def home_page
        @home_page ||= Page.find_by_name('home')
      end
      
      does 'a...

Just install the texlive-xetex package:

sudo apt-get install texlive-xetex

Running integration tests without texlive-xetex will produce an error during xelatex execution:

RTeX::Document::ExecutableNotFoundError

You select some characters, make them bold and suddenly your entire document is bold?

Here's how to fix that:

• Right-click the style in the "Styles and Formatting" window
• Select "Modify"
• Go to the "Organizer" tab
• Unselect "AutoUpdate"

You're welcome.

Browsers make this very hard. Even when you explicitely set the selection inside the textarea (e. g. using jquery-fieldselection) the browser will not scroll the textarea to this selection.

What you can do instead is abuse browsers' behavior that they scroll to the end of a textarea when it gets focus. So we set the textarea's value to the text before the position, then focus it, then reset it to its original value:

function scrollTextareaToPosition($textarea, position) {
  var text...

If you have this problem when you update your FreeBSD Ports:

===>>> Launching child to update ruby19-iconv-1.9.3.547,1 to ruby20-iconv-2.0.0.576,1

===>>> All >> ruby19-iconv-1.9.3.547,1 (17/17)

===>>> Currently installed version: ruby19-iconv-1.9.3.547,1
===>>> Port directory: /usr/ports/converters/ruby-iconv

	===>>> This port is marked IGNORE
	===>>> Not needed with Ruby 2.0 or newer


	===>>> If you are sure you can build it, remove the
	       IGNORE line in the Makefile and try again.

===>>> Update for ruby19-iconv-1.9.3.547,1 f...

The asset pipeline changes the paths of CSS files during precompilation. This opens a world of pain when CSS files reference images (like jQuery UI) or fonts (like webfont kits from Font Squirrel), since all those url(images/icon.png) will now point to a broken path.

In the past we have been using the vendor/asset-libs folder ...

JavaScript's NaN ("Not a Number") is hard to compare against. It never equals anything, not even itself:

NaN === NaN;        // false
Number.NaN === NaN; // false

There is the isNaN method, but it is not really what you are looking for:

isNaN(NaN)     // true
isNaN('hello') // true

Option 1: ES6

The Object.is() method determines whether two values are the same value. It even works for NaN:

Object.is(NaN, NaN) // true

Option 2: ES5

The example above shows that simply using isNaN would match other ...

Angular-xeditable is a bundle of AngularJS directives that allows you to create editable elements.

Such technique is also known as click-to-edit or edit-in-place.

It is based on ideas of x-editable but was written from scratch to use power of angular and support complex forms / editable grids.

Simply use one(...) instead of on(...). It takes the same arguments.

bower-rails is a great solution for managing vendored assets in your Rails app. It feels especially much more convenient and easier to update assets when going this way.

bower-rails generates a Bowerfile that works much like the Gemfile you're used to. Just specify your dependencies and run rake bower:install. You can find available packages here.

An example Bowerfile:

# ./Bowerfile
asset 'angular'
asset 'angular-i18n'
asset 'angular-ui-router'
asset 'angu...

JavaScript structures that include circular references can't be serialized with a"plain" JSON.stringify. Example:

a = { name: 'Groucho' };
b = { name: 'Harpo', sibling: a };
a.sibling = b;

Doing a JSON.stringify(a) will throw an error:

TypeError: Converting circular structure to JSON

There is not much you can do about that except specifying a custom serializer function that detects and cleans up circular references. There are existing solutions so you do not need to think of one yourself, like <https://githu...

Returning an empty scope can come in handy, e.g. as a default object. In Rails 4 you can achieve this by calling none on your ActiveRecord model.

    MyModel.none # returns an empty ActiveRecord::Relation object

For older Rails versions you can use the attached initializer to get a none scope.

We upgraded a Rails 2 application to Rails 3.2 and Ruby 2.1, changed the mysql adapter from mysql to mysql2, but did not activitate the asset pipeline. Instead we used Sass the old-school way (stylesheets in public/sass/*.sass) and relied on stylesheet_link_tag to activate the Sass compiler.

Now all Sass-generated stylesheets inserted the following text into body:before:

Encoding::CompatibilityError: incompatible character encodings: UTF-8 and ASCII-8BIT

I could get rid of this by removing all generated .css files in `...

p ActiveRecord::Base.connection.indexes(:table_name)

This may be hard to find in the docs, but if you want CoffeeScript classes that instantiate their properties from a hash of attributes (like ActiveRecord), do it like this:

class User
  constructor: ({ @name, @email }) ->
    # empty contstructor is fine, CoffeeScript will do the magic.

Example:

var batman = new User(name: 'Bruce Wayne', email: 'batman@example.com')
batman.name # => 'Bruce Wayne'

This is what worked for me in a Rails 4:

# JSON data as first argument, then parameters
patch :update, { some: 'data' }.to_json, id: id, format: :json

Modern browsers natively suppport file pickers that allow the user to choose multiple files at once. To activate this feature, set the multiple attribute:

<input type="file" name="images[]" multiple />

Or in a Rails view:

<%= file_field_tag "images[]", multiple: true %>

This works in IE10+.

Make sure that the field name ends in [] so your server-side code will parse the incoming files into an array. Obviously this naming convention is not compatible with default Rails nested attribute setters, so you'll need to write a form ...

A collection of useful filters for AngularJS, e.g. for fuzzy string searching, displaying numbers as percentages an more.