Question

我试图在laravel 5.7中创建具有多个一对一关系的记录。以下是我的操作方式，

迁移

   //in create_invoices_table.php
   public function up()
     {
           Schema::create('invoices', function (Blueprint $table) {
                $table->increments('id');
                $table->string('name');
                $table->integer('service_id')->unsigned()->nullable();
                $table->integer('account_id')->unsigned()->nullable();
                $table->timestamps();

                // foreign keys
                $table->foreign('service_id')->references('id')->on('services')->onDelete('cascade');
                $table->foreign('account_id')->references('id')->on('accounts')->onDelete('cascade');
           });
     }


     // in create_accounts_table.php
     public function up()
     {
         Schema::create('accounts', function (Blueprint $table){
              $table->increments('id');
              $table->string('name');
              $table->string('email');
              $table->timestamps()
         )};
     }


     // in the create_services_table.php
     public function up()
     {
          Schema::create('services', function (Blueprint $table){
              $table->increments('id');
              $table->string('name');
              $table->float('price', 8, 2);
              $table->timestamps();
         )};
     }

模型

Account模型具有一个hasOne()函数，该函数定义了与发票的一对一关系。即

   //in Account.php
   public function invoice() {
       return $this->hasOne('App\Invoice');
   }

Service模型具有hasOne()函数，该函数还定义了与发票的一对一关系。即

   //in Service.php
   public function invoice() {
       return $this->hasOne('App\Invoice');
   }

使用invoice model函数在belongsTo()中定义一对一的逆关系a如下

     //in Invoice.php
     public function account() {
         return $this->belongsTo('App\Account');
     }

     public function service() {
         return $this->belongsTo('App\Service');
     }

InvoiceController.php

现在，我正尝试创建一个发票记录，该记录将与以下的account模型和service模型相关联

     public function store(Request $request)
     {
          $account = Account::find([$request->get('aid')]);
          $service = Service::find([$request->get('sid')]);

          $invoice = new Invoice();
          $invoice->name = self::getAccountName($request->get('aid'));

          // save the invoice to database
          $invoice->save();

          // add service and account to the invoice
          $invoice->account()->associate($account)->save();
          $invoice->service()->associate($service)->save();


          return redirect()->route('invoices.index');
     }

这给了我我无法修复的以下错误。

Illuminate \ Database \ QueryException（22007）SQLSTATE [22007]：无效的日期时间格式：1366不正确的整数值：第1行“ account_id”列的'[{{id“：1，” name“：”示例名称“，” email“：” example@email.com“'（SQL：更新invoices设置{{ 1}} = [{{“ id”：1，“ name”：“ Example Name”，“ email”：“ example@email.com”，“ created_at”：“” 2019-01-02 15:37:41“， “ updated_at”：“ 2019-01-02 15:37:41”}]，account_id = 2019-01-02 16:05:13其中updated_at = 17）

请帮我解决该错误。

Answer 1

您必须删除find中的方括号。如果您将数组作为参数传递，那么雄辩的查找将返回一个集合。

 public function store(Request $request)
 {
      $account = Account::find($request->get('aid')); // remove square brackets around $request
      $service = Service::find($request->get('sid')); // remove square brackets around $request

      $invoice = new Invoice();
      $invoice->name = self::getAccountName($request->get('aid'));

      // add service and account to the invoice
      $invoice->account()->associate($account); // remove save()
      $invoice->service()->associate($service); // remove save()

      // save the invoice to database
      $invoice->save();


      return redirect()->route('invoices.index');
 }

在关联所有关系后也要保存以避免多个数据库事务。

laravel 5.7如何解决“无效的日期时间格式：1366不正确的整数值：”错误？

1 个答案: