live_beats/lib/live_beats_web/live/profile_live/upload_form_component.html.heex

<div>
  <p class="inline text-gray-500 text-sm">(songs expire every six hours)</p>

  <.form
    for={:songs}
    id="song-form"
    class="space-y-8"
    phx-target={@myself}
    phx-change="validate"
    phx-submit="save"
  >
    <div class="space-y-8 divide-y divide-gray-200 sm:space-y-5">
      <div class="space-y-2 sm:space-y-2">
        <%= for {{ref, changeset}, i} <- Enum.with_index(@changesets) do %>
          <.live_component id={ref} module={SongEntryComponent} changeset={changeset} index={i} />
        <% end %>
        <!-- upload -->
        <div class="sm:grid sm:border-t sm:border-gray-200 sm:pt-5">
          <div class="mt-1 sm:mt-0" phx-drop-target={@uploads.mp3.ref}>
            <%= if Enum.any?(@error_messages) do %>
              <div class="rounded-md bg-red-50 p-4 mb-2">
                <div class="flex">
                  <div class="flex-shrink-0">
                    <.icon name={:x_circle} class="h-5 w-5 text-red-400" />
                  </div>
                  <div class="ml-3">
                    <h3 class="text-sm font-medium text-red-800">
                      Oops!
                    </h3>
                    <div class="mt-2 text-sm text-red-700">
                      <ul role="list" class="list-disc pl-5 space-y-1">
                        <%= for {label, kind} <- @error_messages do %>
                          <li><.file_error label={label} kind={kind} /></li>
                        <% end %>
                      </ul>
                    </div>
                  </div>
                </div>
              </div>
            <% end %>

            <div class="max-w-lg flex justify-center px-6 pt-5 pb-6 border-2 border-gray-300 border-dashed rounded-md">
              <div class="space-y-1 text-center">
                <svg
                  class="mx-auto h-12 w-12 text-gray-400"
                  stroke="currentColor"
                  fill="none"
                  viewBox="0 0 48 48"
                  aria-hidden="true"
                >
                  <path
                    d="M28 8H12a4 4 0 00-4 4v20m32-12v8m0 0v8a4 4 0 01-4 4H12a4 4 0 01-4-4v-4m32-4l-3.172-3.172a4 4 0 00-5.656 0L28 28M8 32l9.172-9.172a4 4 0 015.656 0L28 28m0 0l4 4m4-24h8m-4-4v8m-12 4h.02"
                    stroke-width="2"
                    stroke-linecap="round"
                    stroke-linejoin="round"
                  >
                  </path>
                </svg>
                <div class="flex text-sm text-gray-600">
                  <label
                    for="file-upload"
                    class="relative cursor-pointer bg-white rounded-md font-medium text-indigo-600 hover:text-indigo-500 focus-within:outline-none focus-within:ring-2 focus-within:ring-offset-2 focus-within:ring-indigo-500"
                  >
                    <span phx-click={js_exec("##{@uploads.mp3.ref}", "click", [])}>
                      Upload files
                    </span>
                    <.live_file_input upload={@uploads.mp3} class="sr-only" tabindex="0" />
                  </label>
                  <p class="pl-1">or drag and drop</p>
                </div>
                <p class="text-xs text-gray-500">
                  MP3s up to 20MB
                </p>
              </div>
            </div>
          </div>
        </div>
        <!-- /upload -->
      </div>
    </div>
  </.form>
</div>