opal-jquery | jquery provides DOM access to opal by wrapping jQuery | Plugin library

I will start with pointing few mistakes in your code ,

1. The code in beforeSend is problematic please refer to supplying-an-xhr-method, change it to the below code,

   "beforeSend": lambda do |xhr|

   `xhr.setRequestHeader('X-CSRF-Token', token)`

enclose xhr statements in ( ` ) backticks like above statement

1. columns should have two dimensional array rather than array of objects,

   "columns": [ ["data": "name"], ["data": "desc"], ["data": "industry"], ["data": "tags"] ]

Rest of the code looks fine.

Below is the tested code,