On Nov 28, 2008, at 1:32 PM, Joe Smith wrote:
>
> I have a shopping cart screen where I display my available item and
> all
> it's description info and then want to have the user enter a quantity.
> I show all my item fields, e.g.
>
> <%= @item.item_id %>
>
> Then I have a field defined
>
>
>
> <%= text_field 'shopping_cart_item' , 'quantity' %>
>
> In my controller, how do I access this data?
>
> I've tried many different ways, I just want to get this quantity first
> to validate that it's a number, that it's less than the quantity
> available, etc, then create a shopping cart record.
>
> Help, I've spent a long time on this.
> --
You probably knew this, but you need a form. So maybe:
<% form_for(@cart) do |f| -%>
<%= f.text_field :quantity %>
<%= submit_tag('ok') %>
<% end -%>
That should get you a form. So, fire the thing up, watch your logs,
enter something into the quantity text box and what happens? You get a
params hash passed back to the controller. In that hash is:
:cart => { :quantity => "3" }
So in your controller, probably in the create method, just do
something like:
quantity = params[:cart]['quantity']
But if all you are doing is validating, you should try to do this in
the model anyhow.
Hope this helps.
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