# \[ADV\] "Mastering Rails Forms" Screencasts

**URL:** <https://www.ruby-forum.com/t/adv-mastering-rails-forms-screencasts/155952>\
**Category:** Rails\
**Created:** [December 18, 2008, 1:53pm UTC](https://www.ruby-forum.com/t/adv-mastering-rails-forms-screencasts/155952 "2008-12-18T13:53:59Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![clarkware](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/77aa72/32.png) [@clarkware](https://www.ruby-forum.com/u/clarkware)\
**Post date:** [December 18, 2008, 1:53pm UTC](https://www.ruby-forum.com/t/adv-mastering-rails-forms-screencasts/155952/1 "2008-12-18T13:53:59Z")

</div>

Hi Folks,

As the development editor for The Pragmatic Programmer’s line of  
screencasts, I’m excited to announce that the new “Mastering Rails  
Forms” screencast series by Ryan B. is now available:

[http://pragprog.com/screencasts/v-rbforms/mastering-rails-forms](http://pragprog.com/screencasts/v-rbforms/mastering-rails-forms)

The first three episodes cover topics including:

- form essentials
- creating pull-down menus for one-to-many associations
- using checkboxes for many-to-many associations
- changing the contents of any validation error message
- customizing how form errors are displayed
- displaying form errors inline next to invalid form fields
- validating forms before a submit using AJAX
- using existing model validations to mark a field as being required
- creating custom form builders

Whether you’ve been using Rails for a few days or a few years, you’ll  
likely learn something new in each of these episodes. I sure did!  
I’ve been using and teaching Rails for years, and figured I knew  
almost everything about building forms. But I have to admit that by  
watching these screencasts I learned several new tricks that I’ll be  
adding back into my Rails applications.

Ryan has a real knack for solving thorny problems in elegant ways, and  
I enjoy watching him work. He also has a five-part “Everyday Active  
Record” screencast series you may be interested in:

[http://pragprog.com/screencasts/v-rbar/everyday-active-record](http://pragprog.com/screencasts/v-rbar/everyday-active-record)

All the source code for these screencasts is available, and please  
stop by the screencast forums if you have any questions.

Thanks for your support of these screencasts!

Mike C.