目标 [App\Repositories\Setting\SettingRepositoryContract] 在构建 [App\Http\Controllers\SettingsController] 时不可实例化答案

【问题标题】：Target [App\Repositories\Setting\SettingRepositoryContract] is not instantiable while building [App\Http\Controllers\SettingsController]目标 [App\Repositories\Setting\SettingRepositoryContract] 在构建 [App\Http\Controllers\SettingsController] 时不可实例化
【发布时间】：2020-01-01 05:52:38
【问题描述】：

如何解决目标 [App\Repositories\Setting\SettingRepositoryContract] 在构建 [App\Http\Controllers\SettingsController] 时不可实例化的问题。

这是我的控制器

namespace App\Http\Controllers;
use Auth;
use Session;
use App\Http\Requests;
use Illuminate\Http\Request;
use App\Repositories\Setting\SettingRepositoryContract;
class SettingsController extends Controller
{
protected $settings;
public function __construct(
        SettingRepositoryContract $settings
    )
    {
        $this->settings = $settings;

    }

SettingRepositoryContract

namespace App\Repositories\Setting;

interface SettingRepositoryContract
{
    public function getCompanyName();

    public function updateOverall($requestData);

    public function getSetting();
}

注意：我是 laravel 的新手，无法理解这个错误。所以如果有人知道答案，请帮助我。

谢谢

【问题讨论】：

标签： laravel-5 controller

【解决方案1】：

你需要以正确的方式去做：

SettingsRepositoryInterface

namespace App\Repositories;

interface SettingsRepositoryInterface
{
    public function getCompanyName();

    public function updateOverall($requestData);

    public function getSetting();
}

实现接口SettingsRepository

namespace App\Repositories;

use App\Repositories\SettingsRepositoryInterface;

class SettingsRepository implements SettingsRepositoryInterface
{
    public function getCompanyName()
    {
        // your code here
    }

    // all other functions here
}

创建一个新的服务提供者 SettingsRepositoryServiceProvider

namespace App\Providers;

use Illuminate\Support\ServiceProvider;

class SettingsRepositoryServiceProvider extends ServiceProvider
{
    public function register()
    {
        $this->app->bind(
        'App\Repositories\SettingsRepositoryInterface',
        'App\Repositories\SettingsRepository');
    }
}

注册您的服务提供商，将其添加到config/app.php

App\Providers\SettingsRepositoryServiceProvider::class,

最后在你的控制器中

namespace App\Http\Controllers;

use Auth;
use Session;
use App\Http\Requests;
use Illuminate\Http\Request;
use App\Repositories\SettingsRepositoryInterface;

class SettingsController extends Controller
{
    protected $settings;

    public function __construct(SettingsRepositoryInterface $settings)
    {
        $this->settings = $settings;
    }
 }

供您参考：

https://laravel.com/docs/6.x/container & https://laravel.com/docs/6.x/providers

根据需要修改命名空间。

【讨论】：