SOURCE

new Vue({
  el: "#app",
  data() {
    return {
      fApi: {},
      loading: false,
      rule: [{
        type: "Select",
        title: "自动完成",
        field: "auto2",
        props: {
          filterable: true,
          remote: true,
          remoteMethod: this.remoteMethod,
          loading: false
        },
        options: []
      }],
      options: [{
        value: "1",
        label: "好用",
        disabled: true
      },
      {
        value: "2",
        label: "方便",
        disabled: false
      },
      {
        value: "3",
        label: "实用",
        disabled: false
      },
      {
        value: "4",
        label: "有效",
        disabled: false
      }],
    };
  },
  methods: {
    remoteMethod(query) {
      if (query !== "") {
        this.loading = true;
        setTimeout(() => {
          this.loading = false;
          //只要拿到 auto2组件对应的规则,修改 options 即可
          this.fApi.getRule('auto2').options = [{
            value: query,
            label: query,
            disabled: true
          },
          {
            value: query+query,
            label: query+query,
            disabled: false
          }]
        },
        200);
      } else {
        this.fApi.getRule('auto2').options = [];
      }
    },
  }
})

<script src="https://cdn.jsdelivr.net/npm/vue@2.5.17/dist/vue.min.js">
</script>
<script src="https://cdn.jsdelivr.net/npm/iview/dist/iview.min.js">
</script>
<script src="https://cdn.jsdelivr.net/npm/@form-create/iview/dist/form-create.min.js">
</script>
<div id="app">
  <form-create v-model="fApi" :rule="rule" />
</div>

@import url("//cdn.jsdelivr.net/npm/iview/dist/styles/iview.css");
#app {
  padding: 32px;
}