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Disable submit button while Turbo form is submitting

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                  <%= form_with model: @project, data: { controller: 'disable-submit' } do |f| %>
  <%= f.text_field :name, class: 'rounded border p-2' %>
  <%= f.submit 'Save', data: { disable_submit_target: 'button' }, class: 'rounded bg-blue-600 px-3 py-2 text-white' %>
<% end %>

                  import { Controller } from "@hotwired/stimulus"

export default class extends Controller {
  static targets = ["button"]

  connect() {
    this.element.addEventListener("turbo:submit-start", this.disable)
    this.element.addEventListener("turbo:submit-end", this.enable)
  }

  disconnect() {
    this.element.removeEventListener("turbo:submit-start", this.disable)
    this.element.removeEventListener("turbo:submit-end", this.enable)
  }

  disable = () => {
    this.buttonTarget.disabled = true
    this.buttonTarget.dataset.previousText = this.buttonTarget.value
    this.buttonTarget.value = "Saving…"
  }

  enable = () => {
    this.buttonTarget.disabled = false
    this.buttonTarget.value = this.buttonTarget.dataset.previousText || "Save"
  }
}

Double-submits are easy to trigger on slow connections, especially with Turbo where the page doesn’t visibly reload. I add a Stimulus controller that listens to turbo:submit-start and turbo:submit-end events on the form. On submit start, disable the submit button and optionally show a spinner. On submit end, re-enable unless the server redirected away. This improves UX and prevents duplicate records without needing complicated server-side idempotency for every form. I still keep server-side uniqueness constraints, but this is a good “first line of defense”. Because Turbo emits consistent events, the same controller works for normal page forms and for forms inside frames or modals.

Henry Kim

More from Henry Kim

Disable submit button while Turbo form is submitting

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More from Henry Kim