From: Taneal Bhandari <tanealbhandari@...>
Date: 2009-04-02T07:10:15+09:00
Subject: Incrementing field through a link

I'm still new to Ruby, so am having issues even beginning to deal with
this.  Tried doing some searches, but nothing turned up, and none of the
tutorials that I ran through covered this.  Anyway here's my issue, we
have a form that has a list of items.  The last column in this form is a
column (text field) for "quantity".  What I need to do is add a link to
the side of this text field so that when someone clicks on it, it
updates the quantity by 1.  I already have a method to display this
page, and another method to perform an update on it.  However, I'm
guessing (correct me if I'm wrong) I need to create a new method and
access it by placing a link next to this text field.  Here's my text
field code:

<%= text_field_tag "order_item" + i.to_s + "[quantity]", @quantities[i],
:size => 3, :maxlength => 2 %>
<%= link_to 'Add +', :action => "add_one" %>


What I was thinking I had to do is make my "add_one" method a
combination of my "edit" and "update" methods.  It doesn't seem like
this is the correct way of doing it, but I can't think of anything else.
Any suggestions?  Thanks!
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