php – 如何在Laravel 4中解决“目标[接口]不可实现”？

Illuminate  Container  BindingResolutionException 
Target [ProjectBackendServiceValidationValidableInterface] is not instantiable.

我知道接口和抽象类是不可实例化的,所以我知道Laravel不应该尝试实例化我的接口.但不知何故,它正在努力,我怀疑这可能是一个具有约束力的问题……即使我相信我已经正确绑定它并将其注册为服务提供商.

我应该提一下,我从Chris Fidao的“实施Laravel”中取出了这个例子,它几乎完全相同！

这是我的表单类的前几行：

namespace ProjectBackendServiceFormJob;

use ProjectBackendServiceValidationValidableInterface;
use ProjectBackendRepoJobJobInterface;

class JobForm {

    /**
     * Form Data
     *
     * @var array
     */
    protected $data;

    /**
     * Validator
     *
     * @var ProjectBackendFormServiceValidableInterface
     */
    protected $validator;

    /**
     * Job repository
     *
     * @var ProjectBackendRepoJobJobInterface
     */
    protected $job;

    public function __construct(ValidableInterface $validator,JobInterface $job)
    {
        $this->validator = $validator;
        $this->job = $job;
    }

这是我的验证器类的前几行：

namespace ProjectBackendServiceFormJob;

use ProjectBackendServiceValidationAbstractLaravelValidator;

class JobFormValidator extends AbstractLaravelValidator {

    // Includes some validation rules

这是抽象验证器：

namespace ProjectBackendServiceValidation;

use IlluminateValidationFactory;

abstract class AbstractLaravelValidator implements ValidableInterface {

    /**
     * Validator
     *
     * @var IlluminateValidationFactory
     */
    protected $validator;

    /**
     * Validation data key => value array
     *
     * @var Array
     */
    protected $data = array();

    /**
     * Validation errors
     *
     * @var Array
     */
    protected $errors = array();

    /**
     * Validation rules
     *
     * @var Array
     */
    protected $rules = array();

    /**
     * Custom validation messages
     *
     * @var Array
     */
    protected $messages = array();

    public function __construct(Factory $validator)
    {
        $this->validator = $validator;
    }

这是我将其全部绑定到应用程序的代码：

namespace ProjectBackendServiceValidation;

use IlluminateSupportServiceProvider;
use ProjectBackendServiceFormJobJobFormValidator;

class ValidationServiceProvider extends ServiceProvider {

    public function register()
    {
        $app = $this->app;

        $app->bind('ProjectBackendServiceFormJobJobFormValidator',function($app)
        {
            return new JobFormValidator($app['validator']);
        });
    }
}

然后在app / config / app.php中注册：

.....
'ProjectBackendServiceValidationValidationServiceProvider',....

最后这些是我的控制器的前几行：

use ProjectBackendRepoJobJobInterface;
use ProjectBackendServiceFormJobJobForm;

class JobController extends BaseController {

    protected $jobform;

    function __construct(JobInterface $job,JobForm $jobform)
    {
        $this->job = $job;
        $this->jobform = $jobform;
    }