我需要一些幫助。Laravel - 多對多 - 模型綁定
我有這些表:用戶,購買和編解碼器。我有許多一對多的關係:購買,編解碼器,buy_codec
表
Schema::create('codecs', function (Blueprint $table) {
$table->increments('id');
$table->string('name');
$table->timestamps();
});
Schema::create('buys', function (Blueprint $table) {
$table->increments('id');
$table->integer('user_id')->unsigned();
$table->string('name');
});
Schema::create('buy_codec', function (Blueprint $table) {
$table->increments('id');
$table->integer('buy_id')->unsigned();
$table->foreign('buy_id')->references('id')->on('buys')->onDelete('cascade');
$table->integer('codec_id')->unsigned();
$table->foreign('codec_id')->references('id')->on('codecs')->onDelete('cascade');
$table->timestamps();
});
這是我的控制器:
class UserBuyController extends Controller
{
public function create($userId)
{
$codecs = Codec::lists('name', 'id');
$usr = User::findOrFail($userId);
return view('buy.create', compact('usr', 'codecs'));
}
public function store($userId, Request $request)
{
$codecs = $request->input('codecs');
$usr = User::findOrFail($userId)->buy()->create($request->except('codecs'));
$usr->codec()->sync($codecs);
return redirect('user/'.$userId.'/buy');
}
public function edit($userId, $id)
{
$codecs = Codec::lists('name', 'id');
$buy = User::findOrFail($userId)->buy()->findOrFail($id);
return view('buy.edit', compact('buy', 'codecs'));
}
}
創建形式
{!! Form::open(['method'=>'POST', 'action'=>['[email protected]', $usr->id]]) !!}
<div class="form-group">
{!! Form::label('name', 'Name:') !!}
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-font"></i></span>
{!! Form::text('name', null, ['class'=>'form-control']) !!}
</div>
</div>
<div class="form-group">
{!! Form::label('codecs', 'Outbound Codecs:') !!}
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-language"></i></span>
{!! Form::select('codecs[]', $codecs, null, ['class'=>'form-control', 'multiple'=>true]) !!}
</div>
</div>
{!! Form::submit('Submit', ['class'=>'btn btn-info']) !!}
{!! Form::close() !!}
和thi s是編輯表單
{!! Form::model($buy,['url'=>url('user/'.$buy->user->id.'/buy/'.$buy->id),'method'=>'patch']) !!}
<div class="form-group">
{!! Form::label('name', 'Name:') !!}
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-font"></i></span>
{!! Form::text('name', null, ['class'=>'form-control']) !!}
</div>
</div>
<div class="form-group">
{!! Form::label('codecs', 'Outbound Codecs:') !!}
<div class="input-group">
<span class="input-group-addon"><i class="fa fa-language"></i></span>
{!! Form::select('codecs[]', $codecs, null, ['class'=>'form-control', 'multiple'=>true]) !!}
</div>
</div>
{!! Form::submit('Update', ['class'=>'btn btn-info']) !!}
{!! Form::close() !!}
模型綁定不起作用
有些事情不對,但我不知道是什麼。
這是我的數據透視表。我曾與相關的編解碼器2 3 buy_id
這是我的編輯頁面。
沒有被選中。
更新
型號
class Buy extends Model
{
protected $guarded = ['id'];
public function codec() {
return $this->belongsToMany('App\Codec');
}
public function user() {
return $this->belongsTo('App\User');
}
}
class Codec extends Model
{
protected $guarded = ['id'];
public function buy() {
return $this->belongsToMany('App\Buy');
}
}
class User extends Authenticatable
{
public function buy() {
return $this->hasMany('App\Buy');
}
}
你可以發佈你的模型關係嗎? –
嗨,@JanWillem。發佈更新。謝謝。 – confm
什麼不起作用,即你在期待什麼沒有發生? –