How to add placeholder to Rails 6 text_field

Question

I cannot seem to find the answer to this.

My tag looks like this:

<%= form.text_field :event_location, :required => true, nil, placeholder: "Location" %>

Which isn't working, and is throwing a syntax error. How do I add a placeholder to my text_field form helper tag?

I've also tried these which also do not work:

<%= form.text_field :event_location, :required => true, "", placeholder: "Location" %>
<%= form.text_field :event_location, :required => true, :placeholder => "Location" %>
<%= form.text_field :event_location, :required => true, :attr, :placeholder => "Location" %>
<%= form.text_field :event_location, :required => true, :attr, "", placeholder: "Location" %>

Answer 1

Answer was simply:

<%= form.text_field :event_location, :required => true, placeholder: "Location" %>

Not sure why this was not documented anywhere.