SOLVED :答案发布在下面
如何从此数据透视表和规格表中获取值?
我想在模板中显示这个:
-Model(规格表中的名称)
--Brand(属性表格数据透视表):example1(数据透视表中的值)
--Model(属性表格数据透视表):example123(数据透视表中的值)...
在ProductController中,我尝试返回类似这样的内容 $product = Product::with('specifications')->first();
,但后来我只能从规格表中获取数据,如果我尝试 $product = Product::with('product_specification')->first();
,我会收到错误 Call to undefined relationship [product_specification] on model [App\Product].
数据透视表:
public function up()
{
Schema::create('product_specification', function (Blueprint $table) {
$table->engine = 'InnoDB';
$table->increments('id');
$table->integer('product_id')->unsigned()->index();
$table->foreign('product_id')->references('id')->on('products')->onDelete('cascade');
$table->integer('specification_id')->unsigned()->index();
$table->foreign('specification_id')->references('id')->on('specifications')->onDelete('cascade');
$table->string('attribute');
$table->string('value');
});
}
规格表:
public function up()
{
Schema::create('specifications', function (Blueprint $table) {
$table->engine = 'InnoDB';
$table->increments('id');
$table->string('name')->unique();
$table->timestamps();
});
}
产品型号:
public function specifications()
{
return $this->belongsToMany(Specification::class, 'product_specification');
}
1 回答
我不得不将withPivot()添加到我的Product模型中
然后在模板中: