相关疑难解决方法(0)

我的vue组件是这样的:

<template>
    <div>
        <div class="panel-group" v-for="item in list">
            ...
            <div class="panel-body">
                <a role="button" data-toggle="collapse" href="#purchase-{{ item.id }}" class="pull-right" aria-expanded="false" aria-controls="collapseOne">
                    Show
                </a>
            </div>
            <div id="purchase-{{ item.id }}" class="table-responsive panel-collapse collapse" role="tabpanel">
            ...
            </div>
        </div>
    </div>
</template>

<script>
    export default {
        ...
        computed: {
            list: function() {
                return this.$store.state.transaction.list
            },
            ...
        }
    }
</script>

执行时,会出现如下错误:

Vue模板语法错误:

id ="purchase - {{item.id}}":已删除内部属性中的插值.改为使用v-bind或冒号.

我该如何解决？