laravel 为什么每次只插入一条数据？

Question

DB::beginTransaction();开启以后，每次都只能插入最开始的一条数据，其它的都被回滚了。
代码如下：

try {
     DB::beginTransaction();
     foreach ($rightOrWrongRows as $row) {
     $question = array_combine($rightOrWrongHeader, $row);
     RightOrWrong::create([
         'question' => $question['question'],
         'answer' => $question['answer'],
         'scope' => $question['scope'],
         'degree' => 1,
         'exam_id' => $this->examId,
        ]);
     }
     DB::commit();
     } catch (\Exception $exception) {
        DB::rollBack();
        Log::info($exception->getMessage());
    }

如果关闭事务，那么就可以插入多条数据

try {
     //DB::beginTransaction();
     foreach ($rightOrWrongRows as $row) {
     $question = array_combine($rightOrWrongHeader, $row);
     RightOrWrong::create([
         'question' => $question['question'],
         'answer' => $question['answer'],
         'scope' => $question['scope'],
         'degree' => 1,
         'exam_id' => $this->examId,
        ]);
     }
     //DB::commit();
     } catch (\Exception $exception) {
        //DB::rollBack();
        Log::info($exception->getMessage());
    }

请各位朋友帮解决一下，本人菜鸟。

Answer 1

try

try {
     DB::beginTransaction();
     $data = [];
     foreach ($rightOrWrongRows as $row) {
         $question = array_combine($rightOrWrongHeader, $row);
         $data[] = [
             'question' => $question['question'],
             'answer' => $question['answer'],
             'scope' => $question['scope'],
             'degree' => 1,
             'exam_id' => $this->examId,
             'created_at' => date('Y-m-d H:i:s'),
             'updated_at' => date('Y-m-d H:i:s'),
            ]);
     }
     RightOrWrong::insert($data);
     DB::commit();
     } catch (\Exception $exception) {
        DB::rollBack();
        Log::info($exception->getMessage());
    }

Answer 2

错误信息, 表结构, 图.