On Jun 26, 2012, at 6:23 PM, cyber c. wrote:
> Hi Walter,
>
> The validate* methods works fine on the console. The function
> object.valid? returns false if any of the validate method fails. For
> that case object.valid? returns false even in the controller function,
> but when i redirect to the same url, it doesn't show any errors from the
> code
The errors are set in the event loop of reading the form submission and showing
the results, but when you redirect, you start a new loop, and so unless you
disrupt the cycle you seem to have set for yourself, you're never going to see
those errors, because the errors -- and I suspect the object -- does not exist
in the context of the page you redirected to.
In a normal scaffold controller, you will see this pattern:
def new
@my_model = MyModel.new(params[:my_model])
end
def create
@my_model = MyModel.new(params[:my_model])
if @my_model.save
redirect_to some_route(@my_model), :notice => 'Yay!'
else
render :action => 'new'
end
end
If both sides of your test for save are redirects, then you have to set the
:warn or :error flash to your errors, because they will not persist after the
redirect. Especially because you're using Active Model, but particularly
because you're in a #create method -- each time that runs, the model instance
is created fresh from the supplied parameters, and it forgets all about the
botched save.
>
> <%= f.error_messages %>
>
> In my view im not using any sort of this code
>
> <% flash.each do |name, msg| %>
> <%= content_tag :div, msg, :id => "flash_#{name}" %>
> <% end %>
>
> Do i need it?
>
It's what I use, it may be out of date, since I am using Rails 3.0 for this app
that I copied it from. I believe that some of this was streamlined in 3.2. But
I am also sure that you have to use /some/ sort of code to indicate where you
want your errors to appear on your application layout file.
Walter
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