[英]laravel 5.6 bulk inserting json data
我正在尝试构建一个API来存储和检索MCQ考试试卷。 我正在使用laravel资源类来发送句柄Json数据。 我需要在一个查询中将40条记录插入MySQL数据库,而不使用多维数组。 有什么方法可用吗?
来自前端的示例数据:
{
"data":[
{
"paper_id":"5",
"question_no":"2",
"question":"test insert code",
"answer1":"answer1",
"answer2":"answer2 ",
"answer3":"answer3 ",
"answer4":"Answer4 ",
"answerC":"Correct Answer",
"knowarea":"who knows!"
},
{
"paper_id":"5",
"question_no":"3",
"question":"test insert code",
"answer1":"answer1",
"answer2":"answer2 ",
"answer3":"answer3 ",
"answer4":"Answer4 ",
"answerC":"Correct Answer",
"knowarea":"who knows!"
},
{
"paper_id":"5",
"question_no":"4",
"question":"test insert code",
"answer1":"answer1",
"answer2":"answer2 ",
"answer3":"answer3 ",
"answer4":"Answer4 ",
"answerC":"Correct Answer",
"knowarea":"who knows!"
},
{
"paper_id":"5",
"question_no":"5",
"question":"test insert code",
"aanswer1":"answer1",
"answer2":"answer2 ",
"answer3":"answer3 ",
"answer4":"Answer4 ",
"answerC":"Correct Answer",
"knowarea":"who knows!"
}
]
}`
前端发送40个这样的对象,我需要将它们批量插入我的数据库。 下面的代码是我的控制器存储功能,
` $paper->paper_id = $request->input('paper_id');
$paper->question_no = $request->input('question_no');
$paper->question = $request->input('question');
$paper->answer1 = $request->input('answer1');
$paper->answer2 = $request->input('answer2');
$paper->answer3 = $request->input('answer3');
$paper->answer4 = $request->input('answer4');
$paper->answerC = $request->input('answerC');
$paper->knowarea = $request->input('knowarea');
if($paper->save())
{
return new ExamPaperResource($paper);
}
批量插入数据有哪些选择?
根据您的示例数据,您可以对数据进行json_decode
,然后使用单个Model::insert()
:
{
"data":[
{
"paper_id":"5",
"question_no":"2",
"question":"test insert code",
"answer1":"answer1",
"answer2":"answer2 ",
"answer3":"answer3 ",
"answer4":"Answer4 ",
"answerC":"Correct Answer",
"knowarea":"who knows!"
},
...
]
}
// Controller.php
public function store($json)
{
$data = json_decode($json, true);
Paper::insert($data);
}
这将从您的json创建数组,然后一次插入所有记录。
您可以使用:Eloquent :: insert()
比如下面的例子。
$data = array(
array('name'=>'Coder 1', 'rep'=>'4096'),
array('name'=>'Coder 2', 'rep'=>'2048'),
//...
);
Coder::insert($data);
请尝试以下代码
$jsonarray =json_decode(json_encode($b),TRUE); // $b=your json array
foreach ($jsonarray as $key => $value)
{
foreach ($value as $a => $b)
{
$qry=DB::insert('insert into your_table(colomn_name1,colomn_name2)values(?,?)',[$b['indexname1'],$b['indexname2']]); //index name will be paper_id,question_no etc
}
}
你的代码看起来像这样
public function bulkdata(Request $request)
{
$b=$request->input('data');
$jsonarray =json_decode(json_encode($b),TRUE);
foreach ($jsonarray as $key => $value)
{
foreach ($value as $a => $b)
{
$qry=DB::insert('insert into yourtable(paper_id,question_no,question,answer1,answer2,answer3,answer4,answerC,knowarea)values(?,?,?,?,?,?,?,?,?)',[$b['paper_id'],$b['question_no'],$b['question'],$b['answer1'],$b['answer2'],$b['answer3'],$b['answer4'],$b['answerC']$b['knowarea']);
}
}
}
这段代码适合我。 它插入了所有40条记录,没有任何问题。
$array = $request->all();
foreach($array["data"] as $row)
{
Exam_Paper::create(['paper_id' => $row["paper_id"],
'question_no' => $row["question_no"],
'question' => $row["question"],
'answer1' => $row["answer1"],
'answer2' => $row["answer2"],
'answer3' => $row["answer3"],
'answer4' => $row["answer4"],
'answerC' => $row["answerC"],
'knowarea' => $row["knowarea"],
]);
}
使用更新模型数组字段插入选择查询
$newModelsArray=ModelTable::where(....)->get();
foreach ($newModelsArray as $objectItr) {
$newObjectItr = $objectItr->replicate();
$newObjectItr->field=newValue;
$newObjectItr->save();
}
然后你将更新并保存到表中(将其克隆回数据库) - > replicate()将克隆modelObject,而 - > save()将把它添加到循环内的数据库中!
谢谢阿里
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