<template>
<div>
<div class="dropdown d-inline-block ml-2">
<button type="button" class="btn btn-sm btn-dual" id="page-header-notifications-dropdown" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false" v-on:click="MarkAllAsRead($event)">
<i class="si si-bell"></i>
<span class="badge badge-danger badge-pill" v-if="CountUnread(notifications)">{{ CountUnread(notifications) }}</span>
</button>
<div class="dropdown-menu dropdown-menu-lg dropdown-menu-right p-0 border-1 font-size-sm" aria-labelledby="page-header-notifications-dropdown">
<div class="p-2 bg-primary text-center">
<h5 class="dropdown-header text-uppercase text-white">Notifications</h5>
</div>
<ul class="nav-items mb-0" style="overflow-y:scroll; height:500px;">
<!-- notifications should have been updated by axios but they never appear -->
<li v-for="notification of notifications">
<div v-if="notification.length">
<notification v-bind:notification="notification[0]"></notification>
</div>
<div v-else>
<notification v-bind:notification="notification"></notification>
</div>
</li>
<div class="p-2 border-top" v-if="hasMore">
<a class="btn btn-sm btn-light btn-block text-center" href="javascript:void(0)" v-on:click="loadMoreNotifications($event)">
<i class="fa fa-fw fa-arrow-down mr-1"></i> Load More..
</a>
</div>
</ul>
</div>
</div>
</div>
</template>
<script>
export default {
props:[
'user'
],
data: function() {
return{
notificationsIndex:0,
notifications:[],
hasMore:1
}
},
methods: {
loadNotifications: function(){
var data = {
index: this.notificationsIndex
};
axios.post('/notifications/getAll',data).then( response => {
if(response.data){
if(this.notifications.length==0){
this.notifications=response.data;
console.log(this.notifications);//data fetched here successfully
}
else{
this.notifications.push.apply(this.notifications,response.data);
}
}
else{
this.hasMore = 0;
}
});
console.log(this.notifications);//couldn't find data, just observer object
},
loadMoreNotifications: function(event){
event.preventDefault();
this.notificationsIndex++;
this.loadNotifications();
},
CountUnread: function(notifications){
var count=0;
for(var i=0;i<notifications.length;i++){
if(notifications[i].read_at == null){
count++;
}
}
return count;
},
HasNotification: function(notification){
list = this.notifications.filter(item => {
return item.id == notification.id;
});
return list.length
}
},
created: function(){
this.loadNotifications();
window.Echo.private('App.User.' + this.user.id)
.notification((notification) => {
if(this.HasNotification){
this.notifications.unshift(notification);
}
});
}
}
</script>
并且通知对象在 html 模板中也没有任何内容。
注意：相同的代码在我只有这个 vue 实例的所有页面上都可以正常工作。在另一个页面（localhost/horizon）上（使用 laravel horizon 包并更新它的 layout.blade.php），其中有两个 vue 实例，一个用于通知，另一个用于 Laravel/Horizon，此请求不返回任何内容。