Rails checkbox_tag with ajax

Question

I'm trying to figure out how to pass data with ajax using a checkbox in Rails 3.2.11. I have the following line in my view

<%= check_box_tag(
        "institution_ids_#{inst.name.gsub(" ", "")}",
          inst.id,
          false,
        data: {
          remote: true,
          institution_id: inst.id}) %>

When I change the status of the checkbox, I can see that the controller is correctly getting called (specifically the index method of the controller, which is what I want as that is the view I'm in), however, I cannot seem to access the institution_id variable from the params hash on the controller. Can someone please explain how I use ajax to pass data from the view to the controller within a checkbox. I thought the remote: true function would correctly call the controller (which is does) with the additional parameters that I set (which it doesn't).

Rahul Tapali · Accepted Answer · 2013-03-29 04:46:58Z

5

Why don't you use jquery to make Ajax call.

<%= check_box_tag( "institution_ids_#{inst.name.gsub(" ", "")}", inst.id, false %>

<script>
     $('#checkbox_id').change(function(){
        $.get('controller/action?inst_id='+$(this).val(), function(data,status){
            if(status == 'success'){
              alert(data)
             }
        })
     })
   </script>

In controller:

def action
   inst_id = params[:inst_id]
   #do something
   render :text => "success" 
end

edited Mar 29, 2013 at 4:46

answered Feb 8, 2013 at 20:55

Rahul Tapali

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3 Comments

Jon Over a year ago

I figured I could do something like this. I have a lot of checkboxes, and I figured this would be more readable if I can do everything inline. Is that just not possible?

Rahul Tapali Over a year ago

try using like this: :data => { :remote => true, :url => { :action => action_name, :institution_id => inst.id} }

Jon Over a year ago

So the above didn't work, but this did data: {remote: true, url: url_for(action: :index, institution_id: inst.id), institution_id: inst.id}

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