Hi all,
I have a unique workflow where it's making the use of validations difficult.
My app is for internal use in my company and I have a funky implementation (inspired by the e-commerce Railscasts episodes) of a cart. I have products which when I "add to cart" creates an order with a state of "incomplete". The product is a line item of my order. Hope that makes sense.
Even though this is a little complicated, it works well (even though it may not be the best implementation - suggestions are welcome though!)
Now the problem is when I go to checkout and complete my order I want to validate certain things, like if my customer's order number is present (validates_presence_of). This should be easy, but since the order has ALREADY been created I need to validate the presence of an attribute.
Also, I can't just do this:
[code] validates_presence_of :customer_order_number, :on => :update [/code]
Because it generates a validation error on my '/cart' page which is where I can go and edit the product quantities for the client order.
**I'm sure the solution lies in validates_presence_of with the :if condition, but I just can't figure out how to make it work.**
Below is my related app code.
Orders Controller:
[code] def update @order = Orders.find(params[:id])
respond_to do |format| if @order.update_attributes(params[:order]) flash[:notice] = 'Your cart has been updated.' format.html { redirect_to( current_cart_url ) } format.xml { head :ok } else format.html { redirect_to( current_cart_url ) } format.xml { render :xml => @order.errors, :status => :unprocessable_entity } end end
end
def cart create_current_order unless current_order @order = current_order end
def checkout @order = current_order end
def complete_order @order = current_order
respond_to do |format| if @order.update_attributes(params[:order]) @order.complete #sets order completed at date and state to 'complete' flash[:notice] = 'Thank you! Your order is being processed.' format.html { redirect_to( products_path ) } format.xml { head :ok } else format.html { render :action => 'checkout' } format.xml { render :xml => @order.errors, :status => :unprocessable_entity } end end
end [/code]
I know this is kind of tough to understand, please let me know if you need more specifics or code. Thank you!
-Tony