Laravel:在模板中格式化数据透视表中的数据
在模板中,我希望显示如下产品规格: 型号Laravel:在模板中格式化数据透视表中的数据,laravel,laravel-5,pivot,laravel-5.3,Laravel,Laravel 5,Pivot,Laravel 5.3,在模板中,我希望显示如下产品规格: 型号 品牌:华硕 接口 接口:PCI Express 3.0 我尝试在此foreach中添加另一个循环,但出现错误: foreach ($product->specifications as $specification) { echo $specification->name . '</br>'; echo $specification->pivot->attribute . ': ' . $specif
品牌:华硕
接口
接口:PCI Express 3.0
我尝试在此foreach中添加另一个循环,但出现错误:
foreach ($product->specifications as $specification) {
echo $specification->name . '</br>';
echo $specification->pivot->attribute . ': ' . $specification->pivot->value . '</br>';
}
我只需要显示一次$specification->name
,然后显示该类型下的所有属性和值
这是透视表的结构:
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');
});
}
我怎样才能做到这一点?我应该改变我的表结构吗?我认为实现这一点的最好方法是进行一些后期数据库处理 以下面的代码为例
// Create a new collection
$specifications = new Collection;
// Loop through specifications
foreach($product->specifications as $specification) {
if (! $specifications->has($specification->name)) {
// This is the first specification of this name
$currentSpecs = new Collection;
} else {
// Other specifications have been entered
$currentSpecs = $specifications->get($specification->name);
}
// Now we add the current spec to the list and set it on the main collection
// Using the core name as the key
$currentSpecs->put($specification->pivot->attribute, $specification->pivot->value);
$specifications->put($specification->name, $currentSpecs);
}
现在,您可以在模板中执行以下操作
foreach($specifications as $name => $attributes) {
echo $name;
foreach($attributes as $attribute => $value) {
echo $attribute .': '. $value;
}
}
显然,我假设您不需要任何ID或实际模型,但这可以很容易地进行调整以使用它们。您还可以对集合
类使用each
方法
不管怎样,希望这有帮助
foreach($specifications as $name => $attributes) {
echo $name;
foreach($attributes as $attribute => $value) {
echo $attribute .': '. $value;
}
}