On Sep 15, 10:42 pm, "Jonathan S." <[email protected]> wrote: > Summary of problem: my params hash is being made nil in my controller > without any reason that I can identify. > > Everything was fine until I put this new code as the first lines of code > in my controller. But the block is not being executed because the puts > statement is not evaluated: > > def calculate > > if params[:id] > puts "in if statement" > @query = Query.where(:id => params[:id]) > params = eval(@query[0].queryString).to_options > params[:query_end_date].to_options! > params[:query_start_date].to_options! > end >
Local variables are tricky - merely mentioning them causes them to spring into existence. For example if you run if false x = 2 end Then the local variable x is created, with value nil. I think the same thing is happening here - a local variable called params is being created, which is shadowing the params instance method. Fred > The controller then fails in the first line of the next block of code > (below), and the error is that I am evaluating a nil object. > > if params[:entity_selection]=="ELB" > @instances_array = get_instances_array(params[:instance]) > @grouped_elb_instances = > get_grouped_elb_instances(@instances_array, params[:instance]) > else > @instances_array = [] > @grouped_elb_instances = [] > end > > If I comment out the first 'if' block, the controller works perfectly. > When I print the params before the if statement, it has a value, but for > some reason, it seems like the params variable is cleared from memory. > I have no idea what is happening. > > Any ideas? > > -- > Posted viahttp://www.ruby-forum.com/. -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.
