Is it possible to grab a value from an input, and pass it in the params of a ruby link_to

Question

I have a input fields, and if the user changes an input, I want it to reflect on the next page.

This is what the input looks like:

<input value="<%= @premium_discount.round %>" class="store_pricing_text_box store_gold" id="pro">

And then the link to go to the next page already passes a ruby param of the current item , but I'd also like to pass the value in the input with id pro

<%= link_to "I want this!", new_purchase_path(item_id: @item.id), class: "btn_primary" %>

I thought doing inline jQuery might be the solution - but that doesn't seem to work in a ruby line. Any other thoughts?

Thank you!

Answer 1

You could add another a class (or an id ) to the link_to and a click event to append the extra parameters; for example:

<%= link_to "I want this!", new_purchase_path(item_id: @item.id), class: "btn_primary my-link" %>

<script>
  $('.my-link').click(function() {
    $(this).attr("href", this.href + "&pro=" + $('#pro').val());
  });
</script>

Notice the added my-link class which is used by jQuery to detect the click on the link and add the pro attribute at the end.