无法在 laravel 控制器中获取 json 数据
Not able to fetch the json data in laravel controller
我想从 children 字段获取数据或获取 children 的数量。
我是这样取的:
$temp = json_decode($request->get('tempData');
这是我的 json 负载:
tempData:[{
"id":"c625",
"name":"Chapter 1",
"children":[
{
"id":3,
"type":"study material",
"content":"Demo Study Material Title 2"
},
{
"id":4,
"type":"study material",
"content":"Demo Study Material Title 3"
},
{
"id":5,
"type":"study material",
"content":"Demo Study Material Title 4"
}
],
"type":"chapter"
}
]
您可以创建一个新数组并使用 foreach 循环将子数组推送到该数组中。
$temp = json_decode($request->get('tempData');
$children = array();
$child_count = 0;
foreach ($temp['children'] as $child) {
$child_count++;
array_push($children, $child);
}
您可以使用 collection
获取 tempData 数组中所有项目的 children 计数
collect(json_decode($request->get('tempData'), true))
->mapWithKeys(fn($item) => [$item['id'] => count($item['children'])])
->all();
获取每个 id 的 children 计数结果:
[
"c625" => 3
]
我想从 children 字段获取数据或获取 children 的数量。
我是这样取的: $temp = json_decode($request->get('tempData');
这是我的 json 负载:
tempData:[{
"id":"c625",
"name":"Chapter 1",
"children":[
{
"id":3,
"type":"study material",
"content":"Demo Study Material Title 2"
},
{
"id":4,
"type":"study material",
"content":"Demo Study Material Title 3"
},
{
"id":5,
"type":"study material",
"content":"Demo Study Material Title 4"
}
],
"type":"chapter"
}
]
您可以创建一个新数组并使用 foreach 循环将子数组推送到该数组中。
$temp = json_decode($request->get('tempData');
$children = array();
$child_count = 0;
foreach ($temp['children'] as $child) {
$child_count++;
array_push($children, $child);
}
您可以使用 collection
获取 tempData 数组中所有项目的 children 计数collect(json_decode($request->get('tempData'), true))
->mapWithKeys(fn($item) => [$item['id'] => count($item['children'])])
->all();
获取每个 id 的 children 计数结果:
[
"c625" => 3
]