SOURCE

new Vue({
  el: "#app",
  data: {
		options: {
			formItem: [
				{
          type: 'upload',
          children: [
            {
              type: 'button',
              text: 'upload file',
              props: {
                icon: 'ios-cloud-upload-outline',
                action: '//jsonplaceholder.typicode.com/posts/'
              }
            }
          ]
        }
      ]
    }
  }
})

<link rel="stylesheet" href="//unpkg.com/view-design/dist/styles/iview.css">
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.min.js"></script>
<script src="//unpkg.com/view-design/dist/iview.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/vue-form-maker/dist/vue-form-maker.js"></script>
<div id="app">
  <vue-form-maker :options="options" />
</div>

#app {
  padding: 10px 20px;
}