[英]HasMany relationship doesn't work in Laravel
我在 Laravel 項目中有通過 php artisan make:auth 命令生成的注冊表單。 我想通過添加用戶可以在注冊時選擇他/她的性別的功能來對其進行一些自定義。 我制作了具有兩個值 Man 和 Woman 的性別列的genders 表,並在用戶表中添加了gender_id 列。 我有很多關系,但是當我嘗試注冊用戶時,他已注冊但性別 ID 列仍為 NULL。 我不知道錯誤在哪里。 任何幫助表示贊賞。 這是我的代碼。
注冊控制器.php
<?php
namespace App\Http\Controllers\Auth;
use App\Gender;
use App\User;
use App\Http\Controllers\Controller;
use Illuminate\Support\Facades\Hash;
use Illuminate\Support\Facades\Validator;
use Illuminate\Foundation\Auth\RegistersUsers;
class RegisterController extends Controller
{
/*
|--------------------------------------------------------------------------
| Register Controller
|--------------------------------------------------------------------------
|
| This controller handles the registration of new users as well as their
| validation and creation. By default this controller uses a trait to
| provide this functionality without requiring any additional code.
|
*/
use RegistersUsers;
protected $redirectTo = '/home';
public function __construct()
{
$this->middleware('guest');
}
protected function validator(array $data)
{
return Validator::make($data, [
'genders' => ['required', 'string', 'max:255'],
/* 'gender_id' => 'required|exists:mysql.genders,id', */
'name' => ['required', 'string', 'max:255'],
'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
'age' => ['required', 'integer', 'min:18'],
'password' => ['required', 'string', 'min:8', 'confirmed'],
]);
}
protected function create(array $data)
{
$genders = Gender::where('genders', request()->genders)->get()->pluck('id')->first();
$user = User::create([
'genders_id' => $genders,
'name' => $data['name'],
'email' => $data['email'],
'age' => $data['age'],
'password' => Hash::make($data['password']),
]);
return $user;
}
}
注冊.blade.php
@extends('layouts.app')
@section('content')
<div class="container">
<div class="row justify-content-center">
<div class="col-md-8">
<div class="card">
<div class="card-header">{{ __('Register') }}</div>
<div class="card-body">
<form method="POST" action="{{ route('register') }}">
@csrf
<div class="form-group row">
<label for="genders" class="col-md-4 col-form-label text-md-right">{{ __('Genders') }}</label>
<div class="col-md-6">
<select id="genders" class="form-control @error('genders') is-invalid @enderror" name="genders" value="{{ old('genders') }}" required autocomplete="genders">
<option value="Woman">Woman</option>
<option value="Man">Man</option>
</select>
@error('genders')
<span class="invalid-feedback" role="alert">
<strong>{{ $message }}</strong>
</span>
@enderror
</div>
</div>
<div class="form-group row">
<label for="name" class="col-md-4 col-form-label text-md-right">{{ __('Name') }}</label>
<div class="col-md-6">
<input id="name" type="text" class="form-control @error('name') is-invalid @enderror" name="name" value="{{ old('name') }}" required autocomplete="name" autofocus>
@error('name')
<span class="invalid-feedback" role="alert">
<strong>{{ $message }}</strong>
</span>
@enderror
</div>
</div>
<div class="form-group row">
<label for="email" class="col-md-4 col-form-label text-md-right">{{ __('E-Mail Address') }}</label>
<div class="col-md-6">
<input id="email" type="email" class="form-control @error('email') is-invalid @enderror" name="email" value="{{ old('email') }}" required autocomplete="email">
@error('email')
<span class="invalid-feedback" role="alert">
<strong>{{ $message }}</strong>
</span>
@enderror
</div>
</div>
<div class="form-group row">
<label for="age" class="col-md-4 col-form-label text-md-right">{{ __('Age') }}</label>
<div class="col-md-6">
<select id="age" class="form-control @error('age') is-invalid @enderror" name="age" value="{{ old('age') }}" required autocomplete="age">
<option value="18">18</option>
<option value="19">19</option>
<option value="20">20</option>
<option value="21">21</option>
</select>
@error('age')
<span class="invalid-feedback" role="alert">
<strong>{{ $message }}</strong>
</span>
@enderror
</div>
</div>
<div class="form-group row">
<label for="password" class="col-md-4 col-form-label text-md-right">{{ __('Password') }}</label>
<div class="col-md-6">
<input id="password" type="password" class="form-control @error('password') is-invalid @enderror" name="password" required autocomplete="new-password">
@error('password')
<span class="invalid-feedback" role="alert">
<strong>{{ $message }}</strong>
</span>
@enderror
</div>
</div>
<div class="form-group row">
<label for="password-confirm" class="col-md-4 col-form-label text-md-right">{{ __('Confirm Password') }}</label>
<div class="col-md-6">
<input id="password-confirm" type="password" class="form-control" name="password_confirmation" required autocomplete="new-password">
</div>
</div>
<div class="form-group row mb-0">
<div class="col-md-6 offset-md-4">
<button type="submit" class="btn btn-primary">
{{ __('Register') }}
</button>
</div>
</div>
</form>
</div>
</div>
</div>
</div>
</div>
@endsection
用戶名
<?php
namespace App;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;
use Illuminate\Notifications\Notifiable;
class User extends Authenticatable
{
use Notifiable;
/**
* The attributes that are mass assignable.
*
* @var array
*/
protected $fillable = [
'gender_id', 'name', 'email', 'password', 'age',
];
/**
* The attributes that should be hidden for arrays.
*
* @var array
*/
protected $hidden = [
'password', 'remember_token',
];
/**
* The attributes that should be cast to native types.
*
* @var array
*/
protected $casts = [
'email_verified_at' => 'datetime',
];
public function genders()
{
return $this->belongsTo(Gender::class);
}
}
如果列設置不正確,Eloquent 關系可能不起作用。
在遷移中, gender_id
列的類型必須是unsignedBigInteger
我建議你也將User.php
模型中的函數重命名為gender
而不是genders
我看到你在創建用戶時使用了gender_id
:
$user = User::create([
'genders_id' => $genders,
'name' => $data['name'],
'email' => $data['email'],
'age' => $data['age'],
'password' => Hash::make($data['password']),
]);
這實際上是行不通的,因為 Laravel 會在表中搜索gender_id
如果你想保留genders_id,你可以像這樣設置你的hasMany
: return $this->hasMany(User::class, 'genders_id');
請改變你的模型
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Gender extends Model
{
protected $fillable = [
'gender_id',
];
public function users()
{
return $this->hasMany(User::class);
}
}
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