我的项目中有产品和类别模型。产品属于Category。由于Product有外键category_id,我可以轻松地对输出进行排序,如下所示:
$products = Product::orderBy('category_id', 'asc')->get();
但我真正想要的是按类别名称对产品进行排序,所以我尝试了:
$products = Product::with(['categories' => function($q){
$q->orderBy('name', 'asc')->first();
}]);
但这没有任何结果。作为测试,我已经返回return Product::with('categories')->first();
并输出正常...
这是雄辩的关系。
产品
class Product extends Model
{
protected $fillable = [
'name',
'description',
'price',
'category_id',
];
protected $hidden = [
'created_at',
'updated_at',
];
public function categories()
{
return $this->belongsTo('\App\Category', 'category_id');
}
}
类别:
class Category extends Model
{
protected $fillable = [
'name'
];
public function products()
{
return $this->hasMany('\App\Product');
}
}
而观点部分:
@foreach ($products as $product)
<tr>
<td>{!! $product->categories->name !!}</td>
<td>
@if(!empty($product->picture))
Yes
@else
No
@endif
</td>
<td>{!! $product->name !!}</td>
<td>{!! $product->description !!}</td>
<td>{!! $product->price !!}</td>
<td>
<a href="{{ url('/product/'.$product->id.'/edit') }}">
<i class="fa fa-fw fa-pencil text-warning"></i>
</a>
<a href="" data-href="{{route('product.destroyMe', $product->id)}}"
data-toggle="modal" data-target="#confirm-delete">
<i class="fa fa-fw fa-times text-danger"></i>
</a>
</td>
</tr>
@endforeach
我没有测试过这个,但我认为这应该有用
// Get all the products
$products = \App\Product::all();
// Add Closure function to the sortBy method, to sort by the name of the category
$products->sortBy(function($product) {
return $product->categories()->name;
});
这应该也有效:
$products = Product::with('categories')->get()
->sortBy(function($product) {
return $product->categories->name;
})
你可以使用join(),尝试下面的代码
$query = new Product; //new object
//$query = Product::where('id','!=',0);
$query = $query->join('categories', 'categories.id','=','products.categories.id');
$query = $query->select('categories.name as cat_name','products.*');
$query = $query->orderBy('cat_name','asc');
$record = $query->get();
在laravel中,你无法通过相关表执行订单而无需手动加入相关表,这真的很尴尬,但是这个包可以为你开箱即用https://github.com/fico7489/laravel-eloquent-join