Nil object error - not under console

rubyonrails-talk
1

Hi there,

I'm running my app using rails 2.0.2.

When running the create method in my controller, I get the following error:

2

Hi there,

I'm running my app using rails 2.0.2.

When running the create method in my controller, I get the following error:

---------------------------------- You have a nil object when you didn't expect it! You might have expected an instance of ActiveRecord::Base. The error occurred while evaluating nil.

app/controllers/routes_controller.rb:39:in `create'

Parameters:

{"commit"=>"Create", "route"=>{"name"=>"testroute"}, "user_ids"=>["1", "4"], "heading_id"=>"0"

---------------------------------

Here's line 39 in the controller:

@route.users = User.find(@params[:user_ids]) if @params[:user_ids]

Should be @route.users = User.find(params[:user_ids]) if
params[:user_ids]

The current code is trying to use an instance variable name params

Best. Mike

3

Should be @route.users = User.find(params[:user_ids]) if params[:user_ids]

Well, that fixed it. The previous code I had did work, maybe when I upgraded to rails 2.0 it stopped? This method doesn't get run much and could have gone unnoticed.

Thanks so much for your help.

Jason

4

You're welcome Jason. You can check out this post for more detail on
@params vs. params Ruby on Rails — Use params, not @params

Best. Mike