Question

对不起，我还是Laravel / Lumen的新人，我遇到了桌面关系问题。

这是我一直接收的错误。

“message”：“SQLSTATE [42S22]：找不到列：1054未知列 'where子句'中的'clients.client_project_id'（SQL：select * from clients clients client_project_id。clients为空 client_project_id。class CreateClientProjectAssignmentTable extends Migration { /** * Run the migrations. * * @return void */ public function up() { Schema::create('client_project', function (Blueprint $table) { $table->increments('id'); $table->string('project_key', 50); $table->integer('client_project_id')->unsigned(); $table->timestamps(); $table->foreign('client_project_id') ->references('id') ->on('clients') ->onDelete('cascade'); }); } /** * Reverse the migrations. * * @return void */ public function down() { Schema::dropIfExists('client_project_assignment'); } } class CreateClientsTable extends Migration { /** * Run the migrations. * * @return void */ public function up() { Schema::create('clients', function (Blueprint $table) { $table->increments('id'); $table->string('last_name', 50); $table->string('first_name', 50); $table->string('email_address', 50); $table->timestamps(); }); } /** * Reverse the migrations. * * @return void */ public function down() { Schema::drop('clients'); } }不为空）“，

如果您注意到，SQL查询包含一个奇怪的where条件，我不知道代码在哪里出现问题。

我需要你的专业知识来解决这个问题。如果您需要其他信息，请告知我。

[其他信息]

移民文件

class ClientProjectTableSeeder extends Seeder
{
    /**
     * @inheritdoc
     */
    public function run()
    {
        $this->loadDefaultProjects();
    }

    /**
     * Load default projects
     */
    private function loadDefaultProjects()
    {
        $projects = [
            [
                'project_key'    => 'PRJ',
                'client_project_id'     => 1
            ]
        ];

        foreach ($projects as $project) {
            $obj = new ClientProject;
            $obj->fill($project);
            $obj->save();
        }
    }
}

class ClientTableSeeder extends Seeder
{
    /**
     * @inheritdoc
     */
    public function run()
    {
        $this->loadDefaultClients();
    }

    /**
     * Load default clients
     */
    private function loadDefaultClients()
    {
        $clients = [
            [
                'last_name'     => 'First',
                'first_name'    => 'Client',
                'email_address' => 'c.first@sample.com',
            ],
            [
                'last_name'     => 'Second',
                'first_name'    => 'Client',
                'email_address' => 'c.second@sample.com',
            ]
        ];

        foreach ($clients as $client) {
            $obj = new Client;
            $obj->fill($client);
            $obj->save();
        }
    }
}

SEEDER FILES

class ClientProject extends AbstractCrudModel
{
    /**
     * @inheritdoc
     */
    protected $table = 'client_project';

    /**
     * @inheritdoc
     */
    protected $fillable = ['project_key', 'client_project_id'];

    /**
     * @inheritdoc
     */
    protected $hidden = ['updated_at'];

    /**
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function clients()
    {
        return $this->hasMany(Client::class);
    }
}

class Client extends AbstractCrudModel
{
    /**
     * @inheritdoc
     */
    protected $table = 'clients';

    /**
     * @inheritdoc
     */
    protected $hidden = ['updated_at'];

    /**
     *
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function projects()
    {
        return $this->belongsToMany('App\Models\ClientProject');
    }
}

模型

class ClientProjectRepository extends AbstractCrudRepository
{
    public function __construct(ClientProject $model)
    {
        $this->setModel($model);
    }

    public function getClients($project)
    {
        $this->model()::find(1)->clients()->get();
    }
}

REPOSITORY

%dopar%

我期待的是：

我应该能够检索id为1的项目以及该特定项目的客户信息。

Answer 1

您尝试获取属于ClientProject的客户端。您的迁移中未设置此关系。 Laravel尝试使用与ClientProject id相关的client_project_id来查找客户端。您需要将此迁移添加到client_projects。

$table->integer('client_project_id')->unsigned();

Laravel雄辩似乎很奇怪在SQL查询中显示“[key]为空且[key]不为null”

1 个答案: