I have two models -- order and line_item (with attributes item_number
and description) where an order has many line_items. In my order
controller, I have this action after a user has submitted his order:
def summary
@ec_order = EcOrder.new(params[:ec_order])
# do some error checking
session[:ec_order] = @ec_order
end
Prior to saving the submitted order to the session, I would like to do
some error checking to make sure none of the line_item.item_number
properties are empty or non-numeric. I already have this in my model:
class LineItem < ActiveRecord::Base
belongs_to :order
validates_presence_of :item_number
validates_numericality_of :item_number, :integer_only => true
end
How can I activate this error checking for the line_item object or is
it only activated when I try and save the whole thing to the database?
A follow up, if it's not valid, how can I get a specific error
message? For example, if a user didn't enter an item number, I'd
figure an error message would get generated somewhere because of the
"validates_presence_of :item_number" in the line_item model.
also: i dunno what BCP is trying to say but he's probably right, I
wouldn't know about how to do things properly. I'm only good at getting
things to work at all
Phil, I've read over the link. Thanks for sending it. My question is
I don't know what to put as the params value for error_messages_for.
I tried "error_messages_for(@ec_order)" but that produced an error.
Here are my methods. I start on "new" and submit to "summary", which
should kick it back to "new" if there were errors ...
def new
@user = User.find(session[:user_id])
if (session[:ec_order] != nil)
@ec_order = session[:ec_order]
else
@ec_order = EcOrder.new
1.times { @ec_order.ec_line_items.build }
end
end
def summary
@ec_order = EcOrder.new(params[:ec_order])
if (!@ec_order.valid?)
flash[:notice] = "Order is invalid."
redirect_to :action => 'new'
else
session[:ec_order] = @ec_order
end
end
BCP, I'm not storing ids because I haven't stored my object to the
database yet. I want to give the user a screen to confirm before the
data gets stored. So that's why I'm storing to a session. But if
there's a better way, please let me know.
Thanks to all, - Dave
BCP, But I haven't stored anything to the database yet, so I don't
have an id.
well the way i'm using it in my current project (my first in RoR :D) is
that in a view somewhere i have a form like this:
<%form_for :user do |form|%>
some code
<%=error_messages_for "user" %>
some more code
<% end %>
so when you submit, if there are any errors on the submitted object, the
controller returns you to this view, populates the error_messages_for
and displays them to screen.
