Patrick Steele's .NET Blog

Subversion: Changing log messages

At home, I use Subversion for source control of a small website I maintain for a client.  When I commit changes, I always enter a log message that describes the changes I made along with a comment on how long the changes took (for billing purposes).  Today, after commiting a change, I realized I had forgotten to enter a duration for the change.

"No big deal", I thought.  I used Tortoise SVN's "show log" command to list the log entries.  Right-clicked on the entry I needed to change, selected "Edit log message...", entered my new message and received the following error.

Repository has not been enabled to accept revision propchanges; Ask the administrator to create a pre-revprop-change hook.

After doing a google search, I found this page (from the SVN redbook) explaining what a pre-revprop-change hook was along with where it should be located (in the "hook" directory -- imagine that!).  I then found this blog entry that showed a pre-revprop-change hook (i.e. "script") that would allow changes to log entries.  After a quick copy-paste the hook was installed and I was able to change my log entry.  Just remember that subversion doesn't version log comments so you'll loose whatever was previously in the log comment.

MonoRail: Accessing built-in helpers from a custom helper

MonoRail comes with a number of "helpers" that assist you in generating views for your controller's actions.  Some examples are: FormHelper, which helps you build HTML forms; URLHelper, which helps you build links to other controllers and actions;= and AjaxHelper, which helps with Ajax calls.

You can also build your own helpers by inheritng from MonoRail's AbstractHelper.  Sometimes, it may be handy to use one of the existing helpers inside your own helper.  To do this, you can access the Helpers dictionary off the Controller.  If you wanted to use MonoRail's FormHelper, you could do the following:

FormHelper fh = (FormHelper)Controller.Helpers["FormHelper"];

Pretty handy!

SRT Hosts 4-day C# Jam in April

SRT (the company I work for) is hosting a 4-day C# Jam at our headquarters in Ann Arbor, Michigan.  SRT co-counder and Microsoft Regional Director Bill Wagner will be co-instucting with Bruce Eckel and Jamie King.  Registration is limited to 30 participants so register now to guarantee a seat.  See Bill's post with all of the details.

CodeMash in the news

Seems that CodeMash has attracted the local press as well as bloggers.

CodeMash v2.0.0.8 A Success!

Another CodeMash has come and gone.  It was another spectacular event.  While I didn't win any of the big prizes, my ticket did get pulled for a free book.  I looked around at all of the .NET books but instead settled on "Programming Python" (all 1600 pages of it!).  I visited a couple of sessions on Python and it looks like an interesting language that I'd like to learn.  Then again, I also downloaded and installed "Ruby on Rails" during Brian Sam-Bodden's "Rails: A Peek Under the Covers" session.  I'm a huge fan of MonoRail (I'll never do a webforms app again unless I absolutely have to) and wanted to see the language that provided much of the inspiration for MonoRail.

Speaking of MonoRail, I have one follow-up to my vendor session on MonoRail.  While talking about Areas, I had forgotten the attribute for defining an attribute.  I was trying to use "Area", but the correct attribute is ControllerDetails with a parameter called Area.  Here's a sample:

using Castle.MonoRail.Framework;

[ControllerDetails(Area="admin")]
public class UsersController : Controller
{
    public void Index()
    {
    }
}

My slide deck should be available soon (either through the CodeMash site or right here).  I just wanted to tweak a few things and add notes to the slides.  I (pretty much) abandoned the usual "bulleted-list" format in favor of a more graphical approach, so there's not a lot of "meat" in the slides -- it was all from the speaker.  :)

I hope everyone who attended enjoyed the presentation.  I only have 30 minutes so I went pretty fast and ended right at the 30 minute mark (including a couple of questions).  I'd love to expand it to a full hour of MonoRail fun in the future.  If any local user groups are looking for a presentation on MonoRail, let me know!

Scott Hanselman @ CodeMash

CodeMash was able to snag Scott Hanselman for this afternoon's keynote.  As Steven Smith pointed out, Scott's intro slide deck was absolutely hilarious.  His main talk on IIS7 was equally good.  It's a great talk for those of us who've always thought of IIS as simply a web server.  Scott showed us how much IIS7 has improved and should now be considered more of an application server -- for more than just Microsoft technologies (think PHP, Python, Ruby).  Very cool.

Sold Out!

At this mornings CodeMash announcements, Josh Holmes informed us that not only did CodeMash have a 40% increase over last years attendance, but that we've sold out the Kalahari -- the first time the hotel has ever been sold out!  CodeMash is an awesome event at a great price.  Kudos and thanks to all of those who work so hard to put it together.

Walking Around

Took a liitle walk down to the convention center.  Looks like everything is all set for tomorrow:

Oooo...  Look what I found:

That's my vendor session on Friday (PSST: It's "MonoRail").

Finally!

I've arrived at the Kalahari resort for CodeMash and after about 20 minutes of fiddling (and moving around the room), I finally found a spot that will hold on to a WiFi connection -- albeit slowly: 5mb transmit and 6mb receive.  At least I can get my RSS feeds downloaded!

Let's hope it's a little better down at the convention center where I'll be spending all of my time tomorrow.

CodeMash is almost here!

CodeMash v2.0.0.8 is almost here.  I plan on spending tomorrow tweaking my slides and sample code (I'm doing "An Introduction to MonoRail" in the Friday vendor session -- Room D).  I've only got 30 minutes and I'd like to include time for questions so if you're really interested in MonoRail, don't forget to check out Jay Wren's "Introducing Castle".  He'll be discussing the entire Castle Project (of which MonoRail is just one part) in more detail.

Taking a cue from Bill Wagner, here's my tenative schedule (via Silverlight):

http://www.codemash.org/sessionscheduler/scheduler.html?1=2&2=30&3=4&5=38&6=9&7=22&8=37

I'm starting with the Silverlight talk because I need to learn more about this technology.  Next, I'm going to sit it on Jay's Castle talk.  I know a decent amount about MonoRail and ActiveRecord, but I haven't touched the Windsor Container or the MicroKernel.  After lunch, I'm going to catch Bill's talk on implementing IQueryProvider.  Seeing that done in 70 mins will really push my brain to it's limit!  I'm still undecided on the last session.  Right now I'm leaning towards Dustin's F# talk.  I've never looked at F# (or any other functional language for that matter) and Dustin is such a great speaker.

On Friday, I have to see Bruce Eckel's Python talk.  I saw some python code about 8 years ago and it took me a while to realize code blocks were defined by the indent level.  Yikes!  I hated it.  So now I want to know why Bruce likes it so much.  Next up will be Neal Ford's DSL talk.  After that, I'll probably go to the RESTful Web Services talk -- or maybe Software Design Patterns in Python (depending on my interest level in Python after Bruce's talk).  Finally, I think I'll check out Josh Holmes' DLR talk.  But I'm such a fan of MonoRail, I might check out "Rails: A peek under the covers".  So many great topics...

Now I need to spend time making sure I bring all the right cables, chargers, adapters, etc...  According to CodeMash organizers, we should be able to get WiFi throughout the convention center this year.  The rooms should get it too, but they'll also have a network port so don't forget a CAT5 cable!  :)