weiro/views/uploads/edit.html

<main class="flex-grow-1 flex-shrink-1">
  <div class="flex-grow-1 flex-shrink-1 d-flex flex-column">
    <div class="row flex-grow-1 flex-shrink-1 m-0"
         data-controller="edit-upload"
         data-edit-upload-site-id-value="{{ .site.ID }}"
         data-edit-upload-upload-id-value="{{ .upload.Upload.ID }}"
    >
      <figure class="col-md-9 p-3">
        <img data-edit-upload-target="preview" src="{{ .upload.URL }}" alt="{{ .upload.Upload.Alt }}" class="img-fluid">
      </figure>
      <div class="col-md-3 p-3">
        <div data-edit-upload-target="processList"></div>

        <div class="text-center">
          <div class="dropdown">
            <button class="btn btn-secondary dropdown-toggle" type="button" data-bs-toggle="dropdown" aria-expanded="false">
              Add Processor
            </button>
            <ul class="dropdown-menu">
              <li><a class="dropdown-item" href="#" data-action="edit-upload#addProcessor">Shadow</a></li>
            </ul>
          </div>
        </div>
      </div>
    </div>
  </div>
  <div class="col-md-9">
    Actions go here
  </div>
</main>