php Laravel：Eloquent集合搜索未返回结果

gdrx4gfi 于 2023-02-28 发布在 PHP

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在我的laravel应用程序中，我将JSON文件转换成一个laravel集合，然后执行。我将该方法作为一个laravel命令执行，我回显变量，以便确定它没有丢失任何内容。
我收到错误：

Illuminate\Support\ItemNotFoundException

我的拉拉威尔方法：

$json = File::get(base_path().'/json/Notifications.json');

$notifications = json_decode($json, true);

$notifications = collect($notifications);

echo count($notifications);
echo $this->time;

$dayOfTheWeek = Carbon::now()->dayOfWeek;
       
$todayNotification = $notifications->where('day','=',$dayOfTheWeek)->firstOrFail();

我的通知. json文件

[
    { "day":1, "time":1,"title":"woo", "body":"notifBody1", "image" : "default"},
    { "day":1, "time":2,"title":"woo", "body":"notifBody2", "image" : "default"},
    { "day":1, "time":3,"title":"woo", "body":"notifBody3", "image" : "default"},
    { "day":2, "time":1,"title":"woo", "body":"notifBody4", "image" : "default"},
    { "day":2, "time":2,"title":"woo", "body":"notifBody5", "image" : "default"},
    { "day":2, "time":3,"title":"woo", "body":"notifBody6", "image" : "default"},
    { "day":3, "time":1,"title":"woo", "body":"notifBody7", "image" : "default"},
    { "day":3, "time":2,"title":"woo", "body":"notifBody8", "image" : "default"},
    { "day":3, "time":3,"title":"woo", "body":"notifBody9", "image" : "default"},
    { "day":4, "time":1,"title":"woo", "body":"notifBody10", "image" : "default"},
    { "day":4, "time":2,"title":"woo", "body":"notifBody11", "image" : "default"},
    { "day":4, "time":3,"title":"woo", "body":"notifBody12", "image" : "default"},
    { "day":5, "time":1,"title":"woo", "body":"notifBody13", "image" : "default"},
    { "day":5, "time":2,"title":"woo", "body":"notifBody14", "image" : "default"},
    { "day":5, "time":3,"title":"woo", "body":"notifBody15", "image" : "default"},
    { "day":6, "time":1,"title":"woo", "body":"notifBody16", "image" : "default"},
    { "day":6, "time":2,"title":"woo", "body":"notifBody17", "image" : "default"},
    { "day":6, "time":3,"title":"woo", "body":"notifBody17", "image" : "default"},
    { "day":7, "time":1,"title":"woo", "body":"notifBody18", "image" : "default"},
    { "day":7, "time":2,"title":"woo", "body":"notifBody19", "image" : "default"},
    { "day":7, "time":3,"title":"woo", "body":"notifBody20", "image" : "default"}
]

php

来源：https://stackoverflow.com/questions/75575075/laravel-eloquent-collection-search-is-not-returning-results

2条答案

按热度按时间

hmae6n7t1#

dayOfWeek是0到6。所以它不会匹配你的JSON数据。相反，你可以使用dayOfWeekIso，它是索引到你的喜好。所以改变这一行，我认为它应该工作的预期。

$dayOfTheWeek = Carbon::now()->dayOfWeekIso;

赞(0）回复(0）举报 2023-02-28

afdcj2ne2#

当找不到满足where条件的项时，对$notifications集合调用的firstOrFail方法将引发错误Illuminate\Support\ItemNotFoundException。
您可以捕获此异常并进行适当的处理，例如：

try {
    $todayNotification = $notifications->where('day', '=', $dayOfTheWeek)->firstOrFail();
} catch (Illuminate\Support\ItemNotFoundException $e) {
    // Handle exception here
    // For example, set $todayNotification to null or default value
    $todayNotification = null;
}

或者，您可以使用第一个方法代替firstOrFail，如果没有找到项，firstOrFail将返回null：

$todayNotification = $notifications->where('day', '=', $dayOfTheWeek)->first();

然后，您可以检查$todayNotification是否为空，以处理未找到项的情况。

赞(0）回复(0）举报 2023-02-28

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php Laravel：Eloquent集合搜索未返回结果

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