Improved Scaffolding for Ruby on Rails
Let's begin by fixing the order of our columns. Change the app/controllers/player_controller.rb file to look like this:
class PlayerController < ApplicationController active_scaffold :player do |c| c.columns = [:name, :squad, :address, :date_of_birth, :contact_tel_no, :condition ] c.columns[:squad].ui_type = :select c.columns[:condition].ui_type = :select end end
In this code, we provide a configuration code block to the activescaffold method where we specify the ordering of the columns, in addition to setting the ui_type associated with the squad and condition data to be :select. This fixes our ordering issue and sets the squad and condition selection mechanism to a standard drop-down list.
Sorting out the date problem requires the creation of a Rails helper method for the players table. Edit the app/helpers/player_helper.rb file, and add the following code:
module PlayerHelper def date_of_birth_form_column(record, input_name) date_select :record, :date_of_birth, :name => input_name, :start_year => 1990 end end
The oddly named date_of_birth_form_column helper method calls the ActiveScaffold-supplied date_select method, which lets us adjust the earliest start date associated with our date_of_birth data. With these changes made, restart the Rails application and reload the browser window. Figure 3 shows the new-and-improved player listing, and Figure 4 shows the final version of our player data-entry form. As I'm sure you'll agree, both screens look the business. Take time to play around with the added functionality that ActiveScaffold has provided for free, including sort-ordering links on each of the column headings.
To learn more about Rails, I highly recommend Agile Web Development with Rails by The Pragmatic Programmers (now in its second edition, with a third due soon), as well as O'Reilly Media's Rails Cookbook. To learn more about ActiveScaffold, check out the well-written documentation and code examples available on-line at the ActiveScaffold Web site (see Resources). As I hope this article demonstrates, it doesn't take much to turn an ugly, default Rails application into something you just might want to show off!
Ruby on the Web: www.ruby-lang.org
The RubyGems RubyForge repository: rubyforge.org/projects/rubygems
ActiveScaffold Web Site: activescaffold.com
Rails Plugin Repository: agilewebdevelopment.com/plugins
“An Ajax-Enhanced Web-Based Ethernet Analyzer” by Paul Barry (LJ, May 2007): www.linuxjournal.com/article/9614
“A Database-Driven Web Application in 18 Lines of Code” by Paul Barry (LJ, March 2005): www.linuxjournal.com/article/7937
Reuven Lerner's Excellent Series of Articles Comparing PostgreSQL to MySQL (April, May and June 2007 issues of LJ): www.linuxjournal.com/article/9571, www.linuxjournal.com/article/9618 and www.linuxjournal.com/article/9649
Pick up any e-commerce web or mobile app today, and you’ll be holding a mashup of interconnected applications and services from a variety of different providers. For instance, when you connect to Amazon’s e-commerce app, cookies, tags and pixels that are monitored by solutions like Exact Target, BazaarVoice, Bing, Shopzilla, Liveramp and Google Tag Manager track every action you take. You’re presented with special offers and coupons based on your viewing and buying patterns. If you find something you want for your birthday, a third party manages your wish list, which you can share through multiple social- media outlets or email to a friend. When you select something to buy, you find yourself presented with similar items as kind suggestions. And when you finally check out, you’re offered the ability to pay with promo codes, gifts cards, PayPal or a variety of credit cards.Get the Guide
|Be Kind, Buffer!||Apr 26, 2017|
|Preparing Data for Machine Learning||Apr 25, 2017|
|openHAB||Apr 24, 2017|
|Omesh Tickoo and Ravi Iyer's Making Sense of Sensors (Apress)||Apr 21, 2017|
|Low Power Wireless: 6LoWPAN, IEEE802.15.4 and the Raspberry Pi||Apr 20, 2017|
|CodeLathe's Tonido Personal Cloud||Apr 19, 2017|
- Preparing Data for Machine Learning
- Be Kind, Buffer!
- Teradici's Cloud Access Platform: "Plug & Play" Cloud for the Enterprise
- The Weather Outside Is Frightful (Or Is It?)
- Simple Server Hardening
- Understanding Firewalld in Multi-Zone Configurations
- Bash Shell Script: Building a Better March Madness Bracket
- Gordon H. Williams' Making Things Smart (Maker Media, Inc.)
- Server Technology's HDOT Alt-Phase Switched POPS PDU