Activerecord not working

rubyonrails-talk
1

Hi all, I have a table like the one below called key_value_pairs

id spec val 1 size small 2 size medium 3 size small

In my controller i have

  def edit     @pair = KeyValuePair.find(params[:id])   end

and in my view i have such code as <%= @pair.val %>.

This code was all working as expected before (before what i'm not sure, but now it no longer works) as far as im aware i have made no changes to the edit method in the controller or any changes to the view and all the data is still in the database table but now when i try and view the page i get nil object error message

You have a nil object when you didn't expect it! The error occurred while evaluating nil.val

Does any one have any suggestions or ideas? has this happened to anyone else?

I am not sure how to proceed as all my code (which is rather simple) looks like it should work.

2

There's not enough information to know what the problem is. The find() should raise an exception if the record isn't found, so I suspect that for some reason, the find() isn't being performed, and thus @pair isn't being set.

One quick thing you can do is to temporarily add this to your controller right after the find:

   raise @pair.inspect

Then call your action from the browser. If you still get the view error, then the find didn't happen.