laravel登录后跳转回登录前页面，以及与dcat admin共用后台用户表

laravel9.x框架，要实现登录后自动跳转回登录前访问的页面，只需在app/Http/Controllers/Auth/LoginController.php中添加一个方法：

    // 打开登录页面
    public function showLoginForm()
    {
        session(['url.intended'=>url()->previous()]);
        return view('auth.login');
    }

另外，默认登录使用的是邮箱，我们修改为username：

    public function username(){
        return 'username';
    }

前台的模板中也要修改resources/views/auth/login.blade.php:

                    <form method="POST" action="{{ route('login') }}">
                        @csrf

                        <div class="row mb-3">
                            <label for="username" class="col-md-4 col-form-label text-md-end">用户名</label>

                            <div class="col-md-6">
                                <input id="username" type="text" class="form-control @error('username') is-invalid @enderror" name="username" value="{{ config('app.url') == 'https://tb.kzhgzs.cn' ? 'admin' : old('username') }}" required autocomplete="username" autofocus>

                                @error('username')
                                    <span class="invalid-feedback" role="alert">
                                        <strong>{{ $message }}</strong>
                                    </span>
                                @enderror
                            </div>
                        </div>

共用dcat-admin的admin_users表，可修改app\Modes\User.php模型：

<?php

namespace App\Models;

use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;
use Laravel\Sanctum\HasApiTokens;
use Dcat\Admin\Traits\HasDateTimeFormatter;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Facades\URL;

class User extends Authenticatable implements MustVerifyEmail
{
    use HasApiTokens, HasFactory, Notifiable, HasDateTimeFormatter;

    protected $table = 'admin_users';
    protected $fillable = ['username', 'password', 'name', 'avatar', 'email', 'email_verified_at'];

    protected $hidden = [
        'password',
        'remember_token',
    ];

    protected $casts = [
        'email_verified_at' => 'datetime',
    ];
    
    public function getAvatar()
    {
        $avatar = $this->avatar;

        if ($avatar) {
            if (! URL::isValidUrl($avatar)) {
                $avatar = Storage::disk(config('admin.upload.disk'))->url($avatar);
            }

            return $avatar;
        }

        return admin_asset(config('admin.default_avatar') ?: '@admin/images/default-avatar.jpg');
    }

    /**
     * A user has and belongs to many roles.
     *
     * @return BelongsToMany
     */
    public function roles(): BelongsToMany
    {
        $pivotTable = config('admin.database.role_users_table');

        $relatedModel = config('admin.database.roles_model');

        return $this->belongsToMany($relatedModel, $pivotTable, 'user_id', 'role_id')->withTimestamps();
    }
    
}

然后，注册模板register.blade.php要修改：

                   <form method="POST" action="{{ route('register') }}">
                        @csrf

                        <div class="row mb-3">
                            <label for="username" class="col-md-4 col-form-label text-md-end">用户名</label>

                            <div class="col-md-6">
                                <input id="username" type="text" class="form-control @error('username') is-invalid @enderror" name="username" value="{{ old('username') }}" required autocomplete="username" autofocus>

                                @error('username')
                                    <span class="invalid-feedback" role="alert">
                                        <strong>{{ $message }}</strong>
                                    </span>
                                @enderror
                            </div>
                        </div>

记录完毕。