Rails - Hashes

ruby-talk
1

I am trying to iterate over a hash but it only displays '#' for my key.
I know this is not the case because it outputs the correct number of lines
based on how many keys I have. If it were trully '#' it would only print one
line.

Here is the code that is producing the output...
  <% @payment.batch.each do|key,value| %>
    <li><%=key%> -> <%=value%></li>
  <% end %>

here is my output ...

   - # -> 1

Here is the code that builds the hash...
Controller...
def add_invoice
    @payment = find_payment
    @invoice = Invoice.find(params[:id])
    @payment.add_invoice(@invoice)
  end
def find_payment
    session[:payment] ||= Payment.new
  end

and the class....
class Payment
  include Reloadable
  attr_reader :batch

  def initialize
    @batch = {}
  end

  def add_invoice(invoice)
    unless @batch[invoice]
      @batch[invoice] = 1
    end
  end
end

TIA,
Paul

2

Paul D. Kraus wrote:

I am trying to iterate over a hash but it only displays '#' for my key.
I know this is not the case because it outputs the correct number of lines
based on how many keys I have. If it were trully '#' it would only print one
line.

Here is the code that is producing the output...
<% @payment.batch.each do|key,value| %>
   <li><%=key%> -> <%=value%></li>
<% end %>

here is my output ...

  - # -> 1

What does view|source on the resulting Web page show you?

I'm betting key is an object with no useful default to_s.

···

--
James Britt

"In physics the truth is rarely perfectly clear, and that is certainly
  universally the case in human affairs. Hence, what is not surrounded by
  uncertainty cannot be the truth."
  - R. Feynman

3

What does view|source on the resulting Web page show you?

I'm betting key is an object with no useful default to_s.

Good Call ..

<li>#<Invoice:0xb76e54d8> -> 1</li>

Ok so why is the key getting set to this.

    @invoice = Invoice.find(params[:id])
    @payment.add_invoice(@invoice)

are the lines that get the "key" params[:id] is just the id number from a
row in result set. Or more accuratly its just this from the url...
http://xxx.xxx.xxx.xxx:3000/selection/add_invoice/4

This is my very first attempt at rails and ruby is pretty new to me as well.
but shouldn't params[:id] = '4'

Paul

4

This is my very first attempt at rails and ruby is pretty new to me as
well.
but shouldn't params[:id] = '4'

Never Mind = its getting "Invoice.find"

Thanks for the help.