How to use a variable as a params hash key

rubyonrails-talk
1

Not sure if I worded that Subject line correctly... :stuck_out_tongue:

Anyway, I want to be able to do something similar to the following when processing form data:

1..5.each do |number|   if params[:data][number] == '1' # <-- using block variable "number" as a hash key does not seem to work...     foo.bar   end end

The if statement is never evaluated as true, but at the same time no errors pop up.

What is the proper means of doing the equivalent?

-Reuben

2

You probably want (note the .to_s)

if params[:data][number.to_s] == '1'

-philip

3

Not sure if I worded that Subject line correctly... :stuck_out_tongue:

Anyway, I want to be able to do something similar to the following when processing form data:

Your problem here is that the hash keys are strings, not numbers

Fred

4

I had tried that as well, but it didn''t make any difference.

5

I had tried that as well, but it didn''t make any difference.

what did you try ?

Fred

6

Never mind I just figured out what I was doing.

I didn't realized that the block variable I was passing in my code was itself a hash, so what I needed was:

if params[:data][number[:number].to_s] == '1'

Works now.

Thanks! -Reuben