Two newbie questions

Rails
1

okay, two very silly Ruby on Rails questions (I just started using RoR a
couple of hours ago).

Question 1:
hello.controller

class HelloController < ApplicationController

def index(incoming_value)
@my_variable = incoming_value * 2
end

end

How do I call this method with say, the value of 5? I just want to send
a value as a parameter from index.rhtml and the controller to display
the value * 2. I’m a Java programmer so I’m completely lost here.

Question 2:
How would one go about to first create a input form which takes a
password and then if the user types the correct password, make the
controller redirect the user to page2.rhtml? I’m guessing I have to use
some sort of form helper here, but the concepts are all so new to me
that I’m more intimidated than motivated at the moment.

Thanks!

2

Since you’re new, please do yourself a favor and learn Ruby first:
http://learnruby.com/sites.html has links to a few good tutorials (why’s
poignant guide is odd, but can be useful).

Then, once you’re somewhat comfortable with Ruby, start learning Rails:
http://rails.homelinux.org/ is a great starter tutorial.

Also, if you can pick up books, look for the “Agile Development with
Rails”
and the “Pragmatic Programmers Guide to Ruby” books to get you started.

Jason

3

On 12/4/06, Js [email protected] wrote:

How do I call this method with say, the value of 5? I just want to send
a value as a parameter from index.rhtml and the controller to display
the value * 2. I’m a Java programmer so I’m completely lost here.

This should go as a helper instead. Helpers are methods (functions)
accessible from your views (rhtml files).

In your Hello Helper file you would have:

def times_two(incoming_value)
incoming_value * 2
end

In your Hello Controller, your index method would simply be:

def index
end

Which calls your hello/index.rthml file, where you would have:

<%= times_two(5) %>

Which should display 10.

–
“Impossible is nothing.”

4

A big thanks to the both of you, I’ll pick up a book and try to take a
couple of baby steps a day :slight_smile: It’s just that nearly all Ruby tutorials
are based on building small CRUD applications so it’s hard to find bits
and pieces of information like this on the web.