Question

第一次使用Laravel和PHP。我试图在表 profile 中插入行，其中属性uID是引用 user 表上的uID的外键，但出现错误。如何仅插入配置文件的summary属性并自动设置uID（外键）。我可以毫无问题地插入具有uID的用户。这是我的模型和控制器文件。谢谢！

用户模型

namespace App;

use Illuminate\Database\Eloquent\Model;

    class user extends Model
    {
    // specify which attributes can be filled out during registration
    public $timestamps = false;
    protected $fillable=['firstname','lastname','email','password',];

    public function profile(){
      return $this->hasOne(profile::class);
    }
}

个人资料模型

namespace App;

use Illuminate\Database\Eloquent\Model;

class profile extends Model
{
    //
    public $timestamps = false;
    protected $fillable = ['summary',];

    public function user(){
      return $this->belongsTo(user::class);
    }
}

个人资料迁移

use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreateProfilesTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
     // create profile table
       Schema::create('profiles', function (Blueprint $table) {
           $table->increments('pID');
           $table->timestamp('created_at')->useCurrent();
           $table->string('summary')->default('');
           $table->unsignedInteger('uID');

           $table->foreign('uID')->references('uID')->on('users')->onDelete('cascade');
       });
   }
}

配置文件控制器

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\profile;

class ProfileController extends Controller
{
    public function create()
    {
        //
        return view('profile.create');
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        // used to store user profile after validation
        $this->validate($request,[
          'summary' => 'required'
        ]);
        $profile = new profile([
          'summary' => $request->get('summary'),
          'uID' => $request->user()->uID
        ]);

        return redirect()->route('profile.create')->with('success','Profile created');
    }
}

Answer 1

欢迎来到Laravel：）

在您的配置文件上，需要在用户方法模型上定义外键。

public function user(){ return $this->belongsTo(user::class, 'uID'); }

如果不提供外键，它将寻找user_id字段。

Answer 2

好的，有几件事可能需要解决：

使用resource "aws_launch_configuration" "instances" { image_id = "ami-0fad7824ed21125b1" instance_type = "${var.instance_type}" security_groups = ["${aws_security_group.security_group_ec2.id}"] key_name = "${var.key_pair_name}" user_data = "${data.template_file.user_data.rendered}" lifecycle { create_before_destroy = true } } resource "aws_autoscaling_group" "scaling_group" { launch_configuration = "${aws_launch_configuration.instances.id}" availability_zones = ["${var.availability_zones_names}"] load_balancers = ["${var.elb_id}"] health_check_type = "ELB" min_size = "${var.min_size}" max_size = "${var.max_size}" tags = { key = "Name" value = "terraformUpAndRunning-${var.cluster_name}" propagate_at_launch = true } wait_for_capacity_timeout = "5m" }声明您的课程。它是capitalised letter而不是Profile。也要避免使用复数形式。有关profile;
您在PSR-x方面偏离了laravel方式。因此，您需要在关系中指定与之关联的键：

另外，请注意我如何从用户->用户更改您的方法名称

foreign keys

以及您的个人资料关系：

public function users()
{
  return $this->belongsTo(user::class, 'id', 'uID');
}

Answer 3

嗨，将您的数据库放在这里，并为模型添加外键

Laravel-如何找到外键值

3 个答案: