ajax post raise error

rubyonrails-talk
1

Hi,

within my rails application i have a view which does an ajax call for saving data. what i'd like to do is raise an exception within my controller that causes the onFailure event to be triggered. for example

begin       Orderitem.destroy(params[:id])       render :text => "order item deleted"     rescue Exception => e       flash[:notice] = e.message     end

when an exception is captured i.e the rescue exception, how can i raise an exception; in other langages/platforms i'd construct a 406 (if i remember correctly) response and write a nice message which would then be captured by the ajax call and prompt the user.

any help would be greatly appreciated.

thanks

2

It is not wise to rescue just Exception, try to rescue something more specific, like an ActiveRecord::RecordNotFound or something.

The reason for this is because if something else errors in your code, you’ll still have it rescuing the exception and throwing a false error message.

3

hiddenhippo wrote:

Hi,

within my rails application i have a view which does an ajax call for saving data. what i'd like to do is raise an exception within my controller that causes the onFailure event to be triggered. for example

begin       Orderitem.destroy(params[:id])       render :text => "order item deleted"     rescue Exception => e       flash[:notice] = e.message     end

when an exception is captured i.e the rescue exception, how can i raise an exception; in other langages/platforms i'd construct a 406 (if i remember correctly) response and write a nice message which would then be captured by the ajax call and prompt the user.

any help would be greatly appreciated.

thanks >

With Rails 2.0 you can now return the status along with the rendered text. Something like: begin     Orderitem.destroy(params[:id])     render :text => "order item deleted" rescue ActiveRecordError => e     render :text => e.message, :status => 406 end

HTH Christ