Question

我需要将相同的数据传递给2个表（prospect和course_prospect）

这是我的职责

public function store(Request $request) {

    $prospect = new Prospect;

    $prospect->prospect_name = $request->prospect_name;
    $prospect->prospect_nic = $request->prospect_nic;
    $prospect->contact_number = $request->contact_number;
    $prospect->address = $request->address;
    $value = implode(',', $request->course_intrested);
    $prospect->course_intrested = $value;
    $prospect->comments = $request->comments;
    $prospect->referred_through = $request->referred_through;

    $selected_courses = new Prospect;
    $course_prospect = new Course_prospect;

    $course_prospect->course_id = $value;
    $course_prospect->prospect_id = $selected_courses->id;

    $course_prospect->save();
    $prospect->save();

    return redirect()->back();
}

和course_prospect表具有2个外键（course_id和准客户ID）

这是course_prospect迁移

    Schema::create('course_prospect', function (Blueprint $table) {
        $table->engine = 'InnoDB';
        $table->increments('id');
        $table->integer('prospect_id')->unsigned();
        $table->integer('course_id')->unsigned();
        $table->timestamps();
    });

    Schema::table('course_prospect', function($table) {
        $table->foreign('prospect_id')->references('id')->on('prospect')- 
                >onDelete('cascade');
        $table->foreign('course_id')->references('course_id')- 
                >on('course')->onDelete('cascade');
    });

但是当我提交仅具有数据的表单潜在客户表时。我认为外键不起作用

Answer 1

我不确定您的逻辑，但请注意以下内容：

$selected_courses = new Prospect;

您正在创建一个新对象。当您拨打此行时：

$course_prospect->prospect_id = $selected_courses->id;

$ selected_courses-> id为NULL;

我认为您正在尝试使用ManyToMany关系...

所以正确的方法是这样做：

公共功能存储区（请求$ request）{

$prospect = new Prospect;

$prospect->prospect_name = $request->prospect_name;
$prospect->prospect_nic = $request->prospect_nic;
$prospect->contact_number = $request->contact_number;
$prospect->address = $request->address;
$value = implode(',', $request->course_intrested);
$prospect->course_intrested = $value;
$prospect->comments = $request->comments;
$prospect->referred_through = $request->referred_through;

//保存潜在客户并从数据库获取ID

$ prospect-> save（）;

$ prospect-> courses（）-> sync（$ request-> course_intrested）;

return redirect()->back();

}

假设您已定义了Prospect和Course模型中的ManyToMany关系，则这将填充course_prospect表。

在此处了解更多信息： https://laravel.com/docs/5.8/eloquent-relationships#many-to-many

如何将数据传递到同一功能的2个表中

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