我是laravel的初学者，在父亲的餐桌和Eleve的餐桌之间建立了一对多的关系，此后，当我尝试添加一个新学生时，他显示了这个错误
SQLSTATE [HY000]：常规错误：1364字段'father_id'没有默认值（SQL：插入eleves（nom，prenom，{{1} }，adresse，date_naiss，sexe，nationnalite，niveau_scolaire，updated_at）值（穆罕默德，费尔基奇，突尼斯，2018-07- 22，Ungarçon，tunisen，1，2019-05-13 10:56:28，2019-05-13 10:56:28））
我该如何纠正此问题，需要您的帮助
这是精灵表
created_at精灵的模型
public function up()
{
Schema::create('eleves', function (Blueprint $table) {
$table->bigIncrements('id');
$table->unsignedBigInteger('father_id');
$table->string('nom');
$table->string('prenom');
$table->date('date_naiss');
$table->string('sexe');
$table->string('nationnalite');
$table->string('niveau_scolaire');
$table->string('adresse');
$table->foreign('father_id')->references('id')->on('fathers')->onDelete('cascade')->onUpdate('cascade');
$table->timestamps();
});
}
父亲的模范
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Eleve extends Model
{
protected $fillable = ['nom', 'father_id', 'prenom', 'date_naiss', 'sexe', 'nationnalite', 'niveau_scolaire', 'adresse'];
public function father()
{
return $this->belongsTo('App\Father');
}
}
和精灵之刃
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Father extends Model
{
protected $fillable = ['nom', 'prenom', 'adresse', 'num_tel', 'email', 'login', 'date_naissance ', 'password'];
public function user()
{
return $this->belongsTo(User::class);
}
public function eleve()
{
return $this->hasMany('App\Eleve');
}
学生的控制人
命名空间App \ Http \ Controllers;
使用Illuminate \ Http \ Request; 使用App \ Eleve;
EleveController类扩展了Controller {
<section id="no-more-tables">
<table class="table table-bordered table-striped table-condensed cf">
<thead class="cf">
<tr>
<th>id-eleve</th>
<th>Nom</th>
<th>Prenom</th>
<th>Adresse</th>
<th>Age</th>
<th>Sexe</th>
<th>Nationnalité</th>
<th>Niveau scolaire </th>
<th>les actions</th>
</tr>
</thead>
<tbody>
@foreach($eleves as $eleve)
<tr>
<td class="numeric" data-title="id-parent">{{$eleve->id}}</td>
<td class="numeric" data-title="Nom">{{$eleve->nom}}</td>
<td class="numeric" data-title="Prenom">{{$eleve->prenom}}</td>
<td class="numeric" data-title="Adresse">{{$eleve->adresse}}</td>
<td class="numeric" data-title="Numéro telephone">{{$eleve->date_naiss}}</td>
<td class="numeric" data-title="Email">{{$eleve->sexe}}</td>
<td class="numeric" data-title="Login">{{$eleve->nationnalite}}</td>
<td class="numeric" data-title="Password">{{$eleve->niveau_scolaire}}</td>
<td>
<button href="#editEmployeeModal" class="btn btn-theme" data-target="#editEmployeeModal "
data-mytitle="{{$eleve->nom}}" data-myprenom="{{$eleve->prenom}}"
data-myadresse="{{$eleve->adresse}}" data-myage="{{$eleve->date_naiss}}"
data-mysexe="{{$eleve->sexe}}" data-mynationalite="{{$eleve->nationnalite}}"
data-myniveau="{{$eleve->niveau_scolaire}}" data-catid={{$eleve->id}} class="edit"
data-toggle="modal"><i class="material-icons" data-toggle="tooltip" title="Edit"></i>
</button>
<button href="#deleteEmployeeModal" class="btn btn-theme" data-target="#deleteEmployeeModal"
data-catid={{$eleve->id}} class="delete" data-toggle="modal"> <i class="material-icons"
data-toggle="tooltip" title="Delete"></i> </button>
</td>
</tr>
</tbody>
@endforeach
</table>
<div class="text-center">
{{ $eleves->links() }}
</div>
<div class="clearfix">
<div class="hint-text">Affichage de <b>5</b> sur <b>25</b> entrées</div>
<div id="addEmployeeModal" href="create" class="modal fade">
<div class="modal-dialog">
<div class="modal-content">
<form action="{{route('eleves.store')}}" method="post">
{{csrf_field()}}
<div class="modal-header">
<h4 class="modal-title">Ajouter un éléve</h4>
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
</div>
<div class="modal-body">
<div class="form-group">
<label>nom</label>
<input type="text" id="nom" name="nom" class="form-control" required>
</div>
<div class="form-group">
<label>prenom</label>
<input type="text" id="prenom" name="prenom" class="form-control" required>
</div>
<div class="form-group">
<label>adresse</label>
<textarea name="adresse" id="adresse" class="form-control" required></textarea>
</div>
<div class="form-group">
<label for="start">Date Naissance</label>
<input type="date" id="date_naiss" name="date_naiss" value="2018-07-22" min="2018-01-01"
max="2030-12-31">
<!-- <label>Date Naissance</label>
<input type="text" name=" date_naiss" id="date_naiss" class="form-control" required>
</div> -->
</div>
<div class="form-group">
<div>
<input type="radio" id="sexe" name="sexe" value="une fille" checked>
<label for="sexe">une fille</label>
</div>
<div>
<input type="radio" id="sexe" name="sexe" value="Un garçon">
<label for="sexe">Un garçon</label>
</div>
</div>
<div class="form-group">
<label>Nationnalité</label>
<input type="text" name="nationnalite" id="nationnalite" class="form-control" required>
</div>
<div class="form-group">
<label>Niveau Scolaire</label>
<input type="text" name="niveau_scolaire" id="niveau_scolaire" class="form-control"
required>
</div>
</div>
<div class="modal-footer">
<input type="button" class="btn btn-default" data-dismiss="modal" value="Annuler">
<input type="submit" class="btn btn-success" value="Ajouter">
</div>
</form>
</div>
</div>
</div>
</div>
</section>
}
答案 0 :(得分：0)
getSingleFileContentMap()表中的father_id字段是必需的。您必须将其设置为可选，或者更有可能将其添加到表单中。
要使该字段为可选字段，请替换此行
eleves与
$table->unsignedBigInteger('father_id');
要将其添加到表单中，您可能会使用$table->unsignedBigInteger('father_id')->nullable();
，例如：
<select> 注意：在视图文件中调用数据库是一种不好的做法。更好的方法是将<form ...>
<select name="father_id">
@foreach(\App\Father::all() as $father)
<option name="{{ $father->id }}">{{ $father->nom }}</option>
@endforeach
</select>
加载到控制器内部并将其传递给视图：
Father并在视图中：
public function create()
{
$fathers = Father::all();
return view('...', ['fathers' => $fathers]);
}
答案 1 :(得分：0)
在EleveController中，我添加使用App \ Father；并且我添加了此功能
public function create()
{
$fathers= Father::all();
return view('admin.eleves',compact('fathers'));
}
and in the eleve blade.php i add this
<select name="father_id">
@foreach($fathers as $father)
<option name="{{ $father->id }}">{{ $father->nom }}</option>
@endforeach
</select>
问题是，向我显示了相同的错误“未定义变量：父亲”