calling a rails controller method with javascript

Question

I got a javascript funktion:

function handlePercentage(filledInPixels) {
  filledInPixels = filledInPixels || 0;
  console.log(filledInPixels + '%');
  if (filledInPixels > 80) {
    canvas.parentNode.removeChild(canvas);
  }
}

Now I want to access a rails controller to check a random string when filledInPixels > 80

How can I do that without reloading the page?

Uzbekjon · Accepted Answer · 2016-04-24 09:14:55Z

1

Just make a GET or POST AJAX call to your Rails resource.

If you are using jQuery:

$.get( "/controller/action.json", { your: "params", another: "value" } )
  .done(function( data ) {
    // Access your data here
  });

answered Apr 24, 2016 at 9:14

Uzbekjon

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2 Comments

Max Over a year ago

or can I just access the filledInPixels variable in my controller?

Uzbekjon Over a year ago

Only if you pass it as a parameter in your ajax call: $.get( "/controller/action.json", { filledInPixels: filledInPixels } );.

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