Amateur Programmer

Rails
1

Hi, I have two questions:

  1. How do you cast in RoR2? I have this:
    <% …
    total = 0;

    (@person.quizzes).each { |a| puts total+=a }

    ....

    %>

<%= total %>

However, the compiler treats a as a string. I want it to be an
number. Help?

  1. How do I make this (activefx (Matt Solt) · GitHub
    restful_authentication_tutorial/tree/master/) work in an application?

Thanks!

2

Re: #1–you want to call either .to_i or .to_f on your now-string
variables. The former converts to integer, the latter to a floating
point number.

Also (and read this next bit w/the voice of the Simpson’s Comic Book Guy
in your head) there is no compiler–ruby is an interpreted language, it
has an interpreter. :wink:

-Roy

P.S. That calculation you show looks like it would be better put in a
model.

3

not sure what @person.quizzes refers to [so this might not apply here]
but
if it refers to an ActiveRecord association you could use the sum method
in
ActiveRecord like @person.quizzes.sum(:some_field). link with more
details:
http://api.rubyonrails.org/classes/ActiveRecord/Calculations/ClassMethods.html#M001261.
welcome to rails.

RSL