assignable_values 0.9.0 supports virtual attributes

We've since created ActiveType which has a restricted subset of Virtus' features. It might be enough for your needs.

We sometimes give our ActiveRecord models [virtual attributes](http://railscasts.c...

Note that this card is very old. You might want to use ActiveType for your auto-coerced virtual attributes instead.

We sometimes give our models [virtual att...

Note that this card is very old. You might want to use ActiveType for your auto-coerced virtual attributes instead.

We sometimes give our models [virtual att...

In the past we validate and set default values for boolean attributes in Rails and not the database itself.

Reasons for this:

• Older Rails didn't s...

As you know, assignable_values does not invalidate a record even when an attribute value becomes unassignable. See this example about songs:

class Song < ActiveRecord::Base
  belongs_to :artist
  belongs_to :record_label

  assign...

When a has_many association basically serves to store a list of associated strings (tags, categories, ...), it can be convenient to represent this association as a string array in the containing model. Here is an example for this pattern from th...

You probably know that you can use CSS selectors to match against elements and their attributes, such as:

a[title] { /* any <a> that has a "title" */ }
a[data-fancy="true"] { /* any <a> that has their "data-fancy" attribute set to "true" *...

The Angular 1.2 way:

# By default, angular returns undefined for invalid attributes which removes
# the value from the form field's ngModel (which means it's not sent to the
# server, and old values would not be overwritten).
#
# This directi...

Do not pass times to date attributes. Always convert times to dates when your application uses time zones.

Background

A time-zoned Time attribute on a Rails record is converted to UTC using to_s(:db) to be stored, and converted back into t...

You've always been able to access the humanized version for the current value like this:

song = Song.new(:genre => 'pop')
song.humanized_genre # => 'Pop music'

You can now also retrieve the humanized version of any given value by passing...