mingde-bd/application/admin/view/common/user-group-select.html

<style>
    .el-select-group__wrap:not(:last-of-type)::after {
        content: '';
        position: absolute;
        display: none;
        left: 20px;
        right: 20px;
        bottom: 0px !important;
        height: 0px !important;
        background: #e4e7ed;
    }
    .el-select-group__wrap:not(:last-of-type){
        padding-bottom: 0px !important;
    }
</style>
<div id="{$name}">
   {if $multi==0} <!--多选-->
    <input type="hidden" name="{$name}" :value="value">
    <el-select v-model="value" filterable multiple clearable placeholder="请选择" size="small"
               style="width:100%">
        <el-option-group
                v-for="group in options"
                :key="group.id"
                :label="group.name">
            <el-option
                    v-for="item in group.user"
                    :key="item.id"
                    :label="item.real_name"
                    :value="item.id.toString()">
            </el-option>
        </el-option-group>
    </el-select>
    {if $msg}
    <span class="help-block m-b-none"><i class="fa fa-info-circle"></i> {$msg}</span>
    {/if}
    </div>
    {else}<!--单选-->
      <input type="hidden" name="{$name}" :value="value">
        <el-select v-model="value" filterable clearable placeholder="请选择" size="small"
                   style="width:100%">
            <el-option-group
                    v-for="group in options"
                    :key="group.id"
                    :label="group.name">
                <el-option
                        v-for="item in group.user"
                        :key="item.id"
                        :label="item.real_name"
                        :value="item.id.toString()">
                </el-option>
            </el-option-group>
        </el-select>
{if $msg}
<span class="help-block m-b-none"><i class="fa fa-info-circle"></i> {$msg}</span>
{/if}
</div>
{/if}
<script>
    new Vue({
        el: '#{$name}',
        data: function() {
            return {
                options: {:json_encode($lists)},
                value: '{$val}',
        }
        },
        watch: {
            value: function (newVal, oldVal) {
                if("{$multi}"==="0"){
                    $('input[name={$name}]').val(newVal.join(','));
                }else {
                    $('input[name={$name}]').val(newVal);
                }

            }
        },
        created(){
            const vals = this.value;
            if("{$multi}"==="0"){
                this.value = [];
                if(vals){
                    this.value = vals.split(',');
                }
            }

        }
    })
</script>