Laravel一次更新多條記錄，批量更新的方法
阿新 • • 發佈：2018-12-06
在我們實際應用中，免不了這樣的情況——例如我們同時錄入多條資訊，可能三條五條還好說，但量一旦變大，就會增加讀寫資料庫的次數，會降低效率，那麼，我們該如何實現，做到一次讀寫資料庫，批量更新呢？
例如這種情況：
HTML程式碼：
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <form action="/enroll/complete_order_store" method='post'> {!!csrf_field()!!} @foreach($seats as $s) //多個座位資訊，每個都有他的ID <br> <br> <br> 座位號：{{$s->id}}({{$s->rows.'排'.$s->cols.'座'}}) <input type="hidden" name="id{{$s->id}}" value='{{$s->id}}'> <br> 姓名:<input type="text" name="name{{$s->id}}" id="" value='{{$s->name}}'> //為了區別不同ID提交的不同name，所以在name後面加上了ID <br> 手機:<input type="text" name="mobile{{$s->id}}" id="" value='{{$s->mobile}}'> <br> 學校/單位:<input type="text" name="school{{$s->id}}" id="" value='{{$s->school}}'> <br> 電子郵箱:<input type="text" name="email{{$s->id}}" id="" value='{{$s->email}}'> <br> 是否需要發票: 是<input type="radio" name="is_bill{{$s->id}}" value='1' {{$s->is_bill == 1?'checked':''}}>否<input type="radio" name="is_bill{{$s->id}}" value='0' {{$s->is_bill == 0?'checked':''}}> <br> 地址:<input type="text" name="address{{$s->id}}" id="" value='{{$s->address}}'> <br> 郵編:<input type="text" name="post_code{{$s->id}}" id="" value='{{$s->post_code}}'> @endforeach <input type="hidden" name="ids" value='{{$ids}}'> //這裡ids是把所有id拼接成帶逗號的字串，例如 1,2,3 <input type="submit" value="OK"> </form> </body> </html>
//test data /* $multipleData = array( array( 'id' => 'My id' , 'name' => 'My Name 2' , 'date' => 'My date 2' ), array( 'id' => 'Another id' , 'name' => 'Another Name 2' , 'date' => 'Another date 2' ) ) */
public function completeOrderStore(Request $request){ $ids = Input::get('ids'); //拿到逗號分隔的字串，然後把他們變成陣列 $arr = explode(',', $ids); $multipleData = []; foreach($arr as $a){ //組成例子那樣的陣列 $multipleData[] = ['id'=>$a, 'name'=>Input::get('name'.$a), 'mobile'=>Input::get('mobile'.$a), 'school'=>Input::get('school'.$a), 'email'=>Input::get('email'.$a), 'is_bill'=>Input::get('is_bill'.$a), 'address'=>Input::get('address'.$a), 'post_code'=>Input::get('post_code'.$a) ]; } $res = $this->updateBatch('seats',$multipleData); return Redirect::to('/enroll/myorder'); }
//同時更新多個記錄，引數，表名，陣列（別忘了在一開始use DB;）
public function updateBatch($tableName = "", $multipleData = array()){
if( $tableName && !empty($multipleData) ) {
// column or fields to update
$updateColumn = array_keys($multipleData[0]);
$referenceColumn = $updateColumn[0]; //e.g id
unset($updateColumn[0]);
$whereIn = "";
$q = "UPDATE ".$tableName." SET ";
foreach ( $updateColumn as $uColumn ) {
$q .= $uColumn." = CASE ";
foreach( $multipleData as $data ) {
$q .= "WHEN ".$referenceColumn." = ".$data[$referenceColumn]." THEN '".$data[$uColumn]."' ";
}
$q .= "ELSE ".$uColumn." END, ";
}
foreach( $multipleData as $data ) {
$whereIn .= "'".$data[$referenceColumn]."', ";
}
$q = rtrim($q, ", ")." WHERE ".$referenceColumn." IN (". rtrim($whereIn, ', ').")";
// Update
return DB::update(DB::raw($q));
} else {
return false;
}
}