Rails checkbox and params

Question

I am using many checkboxes in a page as the following:

<%= check_box_tag(:one, value = 1) %></p>

Imagine that it goes from 1 to 20, all the same with the value changed. How can I get in the controller the params of the ones that were checked?

Example: If user checks 3, 5 and 10 how can I get just those params in a single params?

Solution

You'll already get only the ones that were checked; unchecked boxes aren't sent to the server.

Comments

[Arthur Wilson]

But how can I get them from just a single params? Just does not seems right to get it using a lot of params.

[Dave Newton]

@ArthurWilson Not sure what you mean. If they're all named the same thing don't they come as an array? (I don't recall off the top of my head, sorry.)

[Arthur Wilson]

Like if I name them :numbers[] and call params(:numbers) it will work?

[Dave Newton]

@ArthurWilson The name shouldn't include the colon, but yes, I think so--why not just try it?

[Arthur Wilson]

Actually I did 'numbers[]' and got the params as params[:numbers]. Thanks for the help.