How to add hint text to a text field (rails)?

Question

My ERB code is:

    <div class="field">
        <%= f.label "Phone Number (Optional)" %><br />
        <%= f.text_field :phonenumber %>
    </div>

How can I leave text in the field which is deleted when the user clicks on the field? Thanks!

Answer 1

Add placeholder: "text" option to text_field.