I wouldn't do any vaildation in the controller, its messy and not ideal.
I'd have some kind of 'Booking' object which presumably is what you are
adding to your cart and validate it inside that using the rails
validation helpers.
RobL
Jay Pangmi wrote:
> Hi, I have a form that submits values from text fields and a check box.
> The values posted are: camp location name, number of nights, number of
> parents, number of children, value from the check box "family claim".
> Where camp name can't be nil, nights can't be more than 2, parents and
> children together can't be more than 8 and if there are no children
> specified check box can't be checked. Here's my unsuccessful
> implementation for this:
>
> def add_to_cart
> begin
> cart=find_cart
> camp_loc = params[:camp][:id]
> nights=params[:nights]
> parents=params[:parents]
> children=params[:children]
> family_rate_claim=params[:family_claim]
> rescue
> redirect_to_booking("Invalid input.")
> end
> if camp_loc.blank? || nights.blank? || parents.blank?
> redirect_to_booking("Fields with '*' are required fields.")
> elsif (nights.to_i > 2) || ((parents.to_i + children.to_i) > 8)
> redirect_to_booking("Limitation: Maximum stay of 2 nights with group
> of maximum 8 people.")
> elsif children.nil? and family_rate_claim == "1"
> redirect_to_booking("You are not eligible for claiming family
> rate.")
> else
> ....add the stuff in the cart
> end
> end
>
> def redirect_to_booking(msg)
> flash[:notice]=msg
> render :action => :online_booking
> end
>
> When I click the button without giving anything as the input I get this:
>
> Render and/or redirect were called multiple times in this action. Please
> note that you may only call render OR redirect, and at most once per
> action. Also note that neither redirect nor render terminate execution
> of the action, so if you want to exit an action after redirecting, you
> need to do something like "redirect_to(...) and return".
>
> but what I want is to to get redirected to the same page with error
> information.
> thanks..
>
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