RegexField

Regex field for Rails FormHelper. The colorization of the regex is performed by https://github.com/slevithan/regex-colorizer.

Simply call regex_field on your form helper to generate a text field with regex highlighting. Here's an example:

<%= form_for(@record) do |f| %>
  <%= f.regex_field :attr %>
<% end %>

Add this line to your application's Gemfile:

gem 'regex_field'

And then import the javascript in app/assets/stylesheets/application.scss:

//= require regex_field

If you work with the bootstrap_form gem, you can refer to this open issue to enable Bootstrap layout on the regex field.

The gem is available as open source under the terms of the MIT License.