从 select 多个数据库列中保存多个数据

Question

我想在一个学生下保存不止一所大学。对于 html select 我使用了

<select class="selectpicker" multiple data-live-search="true" name="university">
  @foreach($districts as $row)
     <option value= {{$row->name}} > {{$row->name}} </option>
  @endforeach
</select>

这次考取以前保存的大学。我把学区当成大学。

控制器->

public function store(Request $request)
    {
        
         Seller_info::create([
            'name' => $request['name'],
            'email' => $request['email'],
            'passport' => $request['passport'],
            'phone_number' => $request['phone_number'],
            'address' => $request['address'],
            'dateofbirth' => $request['dateofbirth'],
            'ielts' => $request['ielts'],
            'openingcharge' => $request['openingcharge'],
            'serviceCharge' => $request['serviceCharge'],
            'applydate' => $request['applydate'],
            'visaStatus'=> $request['visaStatus'],
            'country' => $request['country'],
            'university'=> $request['university'],
           
        ]);
        return back();
    }

这是在救学生。这是一个混乱的代码，我对此感到抱歉。我正在为快速学习而努力。这里我使用 seller_info 作为学生。

数据正在保存大学，但数据库中只有一所大学。我试图在存储的情况下使用 for 循环。但无法正确实施。

我的table文件->

Schema::create('seller_infos', function (Blueprint $table) {
            $table->id();
            $table->string('name')->nullable();
            $table->string('email')->unique();
            $table->string('passport')->nullable();
            $table->string('phone_number')->unique();
            $table->string('address')->nullable();
            $table->string('dateofbirth')->nullable();
            $table->string('ielts')->nullable();
            $table->string('openingcharge')->nullable();
            $table->string('serviceCharge')->nullable();
            $table->string('applydate')->nullable();
            $table->string('visaStatus')->nullable();
            $table->string('country')->nullable();
            $table->string('university')->nullable();
            $table->timestamps();

        });

和型号

protected $fillable = [
        'name', 'email', 'passport', 'phone_number','address','dateofbirth','ielts', 'openingcharge','serviceCharge','applydate',
        'visaStatus','country','university'

    ];

Answer 1

如果您想为一个学生存储多所大学的数据，首先您需要 3 table、学生（因此您的卖家信息）、大学和 seller_info_university（将成为枢轴 table),

seller_info_university迁移一定要像；

Schema::create('seller_info_university', function (Blueprint $table) {
    $table->bigInteger('seller_info_id')->unsigned();
    $table->bigInteger('university_id')->unsigned();
});

将此代码添加到您的 SellerInfo 模型中；

public function universities()
{
    return $this->belongsToMany(University::class); // Your University model
}

将此代码添加到您的大学模型中；

public function students()
{
    return $this->belongsToMany(SellerInfo::class); // Your Student(SellerInfo) model
}

在你的控制器中试试这个

$student = Seller_info::create([
    'name' => $request['name'],
    'email' => $request['email'],
    'passport' => $request['passport'],
    'phone_number' => $request['phone_number'],
    'address' => $request['address'],
    'dateofbirth' => $request['dateofbirth'],
    'ielts' => $request['ielts'],
    'openingcharge' => $request['openingcharge'],
    'serviceCharge' => $request['serviceCharge'],
    'applydate' => $request['applydate'],
    'visaStatus'=> $request['visaStatus'],
    'country' => $request['country'],
    // 'university'=> $request['university'], you dont need there anymore  
    ]);

    $student->universities()->attach($request['universities']); // You can use attach(), detach() or sync() functions, you can search in Laravel Documentation

    return back();

并查看；

<select class="selectpicker" multiple data-live-search="true" name="universities[]">
  @foreach($districts as $row)
     <option value= {{$row->name}} > {{$row->name}} </option>
  @endforeach
</select>

从 select 多个数据库列中保存多个数据

Save multiple data in database column from select multiple

laravel

eloquent