Formatted the form_input_field, but the number displays and stores in the db differently. Please let me know if you need further details.
<div class="my-5" data-controller="phoneinput">
<%= form.label :Phone %>
<%= form.text_field :phone, class: "block shadow rounded-md border border-gray-200 outline-none px-3 py-2 mt-2 w-full", data: { 'phoneinput-target': 'input'}, :maxlength=>"12", placeholder: "555-111-5555" %>
</div>
to perform 555555 to 555-111-5555 using a stimulus controller
import { Controller } from "@hotwired/stimulus"
export default class extends Controller {
static targets = [ "input" ]
connect() {
const input = this.inputTarget;
// console.log("hellow");
input.addEventListener("keydown", (e) => {
if (e.key === "Backspace" || e.key === "Delete") return
if (e.target.value.length === 3) {
input.value = input.value + "-"
}
if (e.target.value.length === 7) {
input.value = input.value + "-"
}
if(e.target.value.length === 14) {
input.value = input.value + "-";
}
}
)
}
}