在我的代码中,我想在产品表的类别下显示类别和子类别。
这里是我的类别表
1。
public function up() { Schema::create('categories', function (Blueprint $table) {
$table->increments('id');
$table->integer('parent_id'); //sub category id
$table->string('name');
$table->rememberToken();
$table->timestamps();
});
}
这是我的产品表
2。
public function up()
{
Schema::create('products', function (Blueprint $table) {
$table->increments('id');
$table->integer('category_id');
$table->string('product_name');
$table->timestamps();
});
}
这是我的类别模型
3.Category.php
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Category extends Model { protected $guarded=[];
public function products(){
return $this->hasMany('App\Product');
}
public function parent(){
return $this->belongsTo('App\Category','parent_id','id');
}
}
这里是我的产品型号
4.Product.php
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Product extends Model
{
public function category(){
return $this->hasone('class::Category');
}
}
现在是我的ProductsController.php
5.ProductsController.php
<?php
namespace App\Http\Controllers;
use App\Category;
use App\Product;
use Session;
use Illuminate\Http\Request;
class ProductsController extends Controller
{
public function product(){
return view('admin.products.product');
}
}
这是我的product.blade.php文件
<form class="form-horizontal" method="post" action="{{route('add.product')}}" name="add_product" id="add_product" novalidate="novalidate">
@csrf
<div class="control-group">
<label class="control-label">main Category </label>
<div class="controls">
<select name="category_id" id="category_id" style="width:220px;">
@foreach(App\Category::all() as $cat)
<option value="{{$cat->id}}" >{{ $cat->parent()->name ? $cat->parent()->name . ' -- ' : '' }}{{$cat->name}}</option>
@endforeach
</select>
</div>
</div>
<div class="control-group">
<label class="control-label">Product Name</label>
<div class="controls">
<input type="text" name="product_name" id="product_name">
</div>
</div>
<div class="form-actions">
<input type="submit" value="submit" class="btn btn-success">
</div>
</form>
我想在我的[[product.blade.php中输入这样的数据
what data i want这就是为什么我在
product.blade.php
中使用此代码的原因>@foreach(App\Category::all() as $cat)
<option value="{{$cat->id}}" >{{ $cat->parent()->name ? $cat->parent()->name . ' -- ' : '' }}{{$cat->name}}</option>
@endforeach
但是我面对这样的错误
ErrorException (E_ERROR)
Undefined property: Illuminate\Database\Eloquent\Relations\BelongsTo::$name (View: F:\laragon\www\flipcart\resources\views\admin\products\product.blade.php)
Previous exceptions
Undefined property: Illuminate\Database\Eloquent\Relations\BelongsTo::$name (0)
在我的代码中,我想在“产品”表的“类别”下显示类别和子类别。这是我的类别表1。public function up(){Schema :: create('categories',function(Blueprint ...