js.erb not executing javascript but is processed rails

Question

I'm trying to get my pagination working with Ajax, using either will_paginate or kaminari.

When I hit pagination link my log says

Processing by Instructor::FullDashboardController#pupil_leads as JS

and

Rendered instructor/full_dashboard/pupil_leads.js.erb within layouts/main (0.1ms)

But the js has no effect. So to test it I wrote

console.log("Hello");
<%logger.debug "This is the js file"%>
alert('Hello Rails');

In the js.erb file, in my log I see This is the js file as expected, but there is nothing in js console in my browser and the alert doesn't show. So I know the file is being processed, as my logger.debug works but there is no js.

How can I further troubleshoot this?

Rails 4.1

Ruby 2.1

Full Dash Controller

class Instructor::FullDashboardController < ApplicationController
   layout 'main'
...
   def pupil_leads
     @ivar = Model.where("something = ?", some_object.id).order("created_at desc").page(params[:page]).per(10)
     respond_to do |f|
       f.js { render :content_type => 'text/javascript' }
       f.html
     end
  end

please show full Instructor::FullDashboardController.

Roman Kiselenko
– Roman Kiselenko

2014-11-25 12:23:24 +00:00
Commented Nov 25, 2014 at 12:23 — Roman Kiselenko
– Roman Kiselenko, Commented Nov 25, 2014 at 12:23
It's a bit long for that, do you want the relevant action?

LpLrich
– LpLrich

2014-11-25 12:23:51 +00:00
Commented Nov 25, 2014 at 12:23 — LpLrich
– LpLrich, Commented Nov 25, 2014 at 12:23
post pupil_leads action.

Roman Kiselenko
– Roman Kiselenko

2014-11-25 12:24:30 +00:00
Commented Nov 25, 2014 at 12:24 — Roman Kiselenko
– Roman Kiselenko, Commented Nov 25, 2014 at 12:24

Roman Kiselenko · Accepted Answer · 2017-04-12 16:19:03Z

21

Add layout: false option to the render block:

def pupil_leads
   # some code here
  respond_to do |f|
    f.js { render layout: false, content_type: 'text/javascript' }
    f.html
  end
end

_{For some reason Rails don't recognize request as xhr, I also watched that the views extension (.erb.html or .slim) must be specified in full.}

edited Apr 12, 2017 at 16:19

answered Nov 25, 2014 at 12:28

Roman Kiselenko

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4 Comments

LpLrich Over a year ago

Thank you. Can you possibly give a short explanation as to why this is needed? Just for reference.

LpLrich Over a year ago

Thanks so much, I was going totally crazy with this. One of those "wish I had asked sooner and saved a dozen hours" ones. Thanks again.

Roman Kiselenko Over a year ago

for debug async action use Chrome/Network response tab, here you always can see whats wrong with your server response.

JosephK Over a year ago

Also keep in mind, a single error in your js and all may fail silently - even an initial console.log statement on the first line. Start with only a console.log statement in your js file, then slowly add pieces back until the console.log statement doesn't appear - which means there is an untracable (in rails) bug somewhere in the latest code you pasted back.

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