@Mclovinn  You have more elements that columns 
```ruby 
columns = %w[code description stock list_price_one]
```
the correct form is:
```ruby
       [
         link_to(product.code, product),
         h(product.description),
         h(product.stock),
         h(product.list_price_one)
       ]
```
This causes  miss information on  DataTable