MVC... Issues with Models (2nd attempt at post...previous lo

Rails
1

I’m new to Ruby and RoR. I written a small app that has gotten my feet
wet.

I have a question about Models. Controllers, I’m good. Views and
Partials, I’m good.

Okay, so Models hold data. Models have the ability to query the
database to access and change data. Model changes are only picked up
after server restart unlike everybody else… what? Most of my changes
seem to be here. My controllers just say go here next and show this
view. The real work, validation, business logic, … all seems to be
in the Models. One of the first things that got me interested in Ruby
/ RoR was avoiding the recompile/restart world of Java/C#. So am I
doing something wrong? It’s almost like I’m looking for MVCL (Model -
DataLayer ONLY, View [Presentation], Controller, and Logic).

Thanks,
Jason

2

Jason V. wrote:

Okay, so Models hold data. Models have the ability to query the
database to access and change data. Model changes are only picked up
after server restart unlike everybody else… what?

What? To change a model’s link to the database (correct me if I’m
wrong) you edit stuff in db/migrate, run ‘rake migrate’ (?), run your
tests (!), and hit your application’s pages. The new models are there.
I do this all the time (with a SQLite backend for development).

To change a model’s class, I … change the class, run the tests, and
hit the application’s pages. The changes are there. I frequently tweak
code in any layer and instantly click on my pages’ links. The new
action versions are all just there.

Most of my changes
seem to be here.

That could be a design smell. Do most of your models’ methods reach
out to other models?

My controllers just say go here next and show this
view. The real work, validation, business logic, … all seems to be
in the Models. One of the first things that got me interested in Ruby
/ RoR was avoiding the recompile/restart world of Java/C#. So am I
doing something wrong? It’s almost like I’m looking for MVCL (Model -
DataLayer ONLY, View [Presentation], Controller, and Logic).

Are you stopping and starting the server after each change? don’t do
that.

Are you writing more unit tests than production code? Set your editor
up to run such tests from one button.

(I remember my nightmare days with Tomcat, and I suspect that anyone
burned by that gawd-awful system might have trouble thinking inside
Rails’s capacious box!)

–
Phlip
http://c2.com/cgi/wiki?ZeekLand ← NOT a blog!!

3

Hi –

On Mon, 18 Dec 2006, Jason Vogel wrote:

I’m new to Ruby and RoR. I written a small app that has gotten my feet
wet.

Welcome!

doing something wrong? It’s almost like I’m looking for MVCL (Model -
DataLayer ONLY, View [Presentation], Controller, and Logic).

What Rails environment are you running in? In development mode you
should see everything, including models, getting reloaded. In
production you’ll see very little reloading – but at that stage it
shouldn’t matter.

David

–
Q. What’s a good holiday present for the serious Rails developer?
A. RUBY FOR RAILS by David A. Black (Ruby for Rails)
aka The Ruby book for Rails developers!
Q. Where can I get Ruby/Rails on-site training, consulting, coaching?
A. Ruby Power and Light, LLC (http://www.rubypal.com)

4

Hi –

On Mon, 18 Dec 2006, Jason Vogel wrote:

doing something wrong? It’s almost like I’m looking for MVCL (Model -
aka The Ruby book for Rails developers!
activerecord (1.14.4.5618, 1.14.4)
Real simple on the service. I built about 20 [data] models. As I was
coding, I needed method “a” on model B. Write “a”, add call to “a”
from Controller and run. Controller would fire new code, but “a” would
not be found. Restart server, hit refresh on browser, method found.
My “mild” empirical evidence that models weren’t being reloaded.

Are these ActiveRecord::Base subclasses? I believe that if they’re
not, they won’t automatically reload. You might have to put: include
Reloadable in them.

(I could be out of date or out of sync on this, but it’s worth a try
if that’s the case.)

David

–
Q. What’s a good holiday present for the serious Rails developer?
A. RUBY FOR RAILS by David A. Black (Ruby for Rails)
aka The Ruby book for Rails developers!
Q. Where can I get Ruby/Rails on-site training, consulting, coaching?
A. Ruby Power and Light, LLC (http://www.rubypal.com)

5

On Dec 18, 10:04 am, [email protected] wrote:

Okay, so Models hold data. Models have the ability to query the
shouldn’t matter.

David

–
Q. What’s a good holiday present for the serious Rails developer?
A. RUBY FOR RAILS by David A. Black (Ruby for Rails)
aka The Ruby book for Rails developers!
Q. Where can I get Ruby/Rails on-site training, consulting, coaching?
A. Ruby Power and Light, LLC (http://www.rubypal.com)

Windows XP, SP2
RadRails 0.72
Development mode (technically, I not sure… )
rails (1.1.6.5618, 1.1.6)
actionmailer (1.2.5.5618, 1.2.5)
actionpack (1.12.5.5618, 1.12.5)
actionwebservice (1.1.6.5618, 1.1.6)
activerecord (1.14.4.5618, 1.14.4)
activesupport (1.3.1.5618, 1.3.1)

I’m not “raking” anything…
I haven’t even started down the RoR test fixture path.

I wrote a little app that sends an email with a link. Open email,
click link, return to 2nd controller, yea/nay, if yay, take payment,
then final page, if nay, then final page. The final page does an
update.

Real simple on the service. I built about 20 [data] models. As I was
coding, I needed method “a” on model B. Write “a”, add call to “a”
from Controller and run. Controller would fire new code, but “a” would
not be found. Restart server, hit refresh on browser, method found.
My “mild” empirical evidence that models weren’t being reloaded.

David,

Do you consult to Ruby/RoR resistant Enterprises :-)? I’m trying to
convince management of the viability of Ruby/RoR in our JSP, Weblogic
EJB world… Unfortunately, I’m not being overly successful.

Thanks,
Jason