我正在尝试从输入字段创建搜索功能，以搜索相关链接在一起的多个表

Question

我正在尝试通过多个表实现搜索。该项目是一个在线商店，有 3 个不同的表格，产品、类别和品牌。我只能搜索 Products 表，但似乎无法从我的刀片文件中获取相同的搜索字段来搜索类别或品牌并返回相关产品的结果。 我的 Blade 搜索输入

<form action="{{ url('/search-products') }}" method="post">
  {{ csrf_field() }}
  <div class="form-group">
    <div class="row" style="display: flex;">
      <input class="typeahead form-control form-control-lg" type="text" name="product" id="product" placeholder="Search item to buy here..." style="width: 220px;"> &nbsp
      <button type="submit" class="btn btn-primary">
        <i class="ti-search"></i>
    </div>
  </div>
</form>

我的控制器中的搜索功能

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Input;
use Illuminate\Support\Facades\Redirect;
use Image;
use App\Category;
use App\Brands;
use App\Product;
use DB;

class ProductController extends Controller
{
   public function searchProducts(Request $request) {
        $product = $request->input('product');

        $categories = Category::with('categories')->where(['parent_id' => 0])->get();

        $productsAll = Product::query()->where('product_name', 'LIKE', "%{$product}%")
        ->orWhere('state', 'LIKE', "%{$product}%")
        ->orWhere('lga', 'LIKE', "%{$product}%")
        ->orWhere('category_id', 'LIKE', "%{$product}%")->where('status', 1)->get();

        $breadcrumb = "<a href='/'>Home</a> / ".$product;

        return view('pages.results')->with(compact('categories', 'productsAll',  'product', 'breadcrumb'));
    }
}

我的产品模型

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;
use Auth;
use Session;
use DB;

class Product extends Model
{
    protected $with = ['category'];

    public function category()
    {
        return $this->hasMany('App\Category', 'id');
    }
}

我的类别模型

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Category extends Model
{
    public function products(){
        return $this->hasMany('App\Product','id');
    }
}

我的品牌模型

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Brands extends Model
{
    //
}

Answer 1

我可以通过使用eloquent的join函数查询多个表来解决这个问题。我在控制器中编辑了我的搜索功能，如下所示

public function searchProducts(Request $request) {
        $product = $request->input('product');

        $categories = Category::with('categories')->where(['parent_id' => 0])->get();

        $productsAll = Category::query()->join('products', 'products.category_id', '=', 'categories.id')
                                    ->where('categories.name', 'LIKE', "%{$product}%")
                                    ->orWhere('products.product_name', 'LIKE', "%{$product}%")
                                    ->where('products.status', 1)->get();


        $breadcrumb = "<a href='/'>Home</a> / ".$product;

        return view('pages.results')->with(compact('categories','productsAll','product','breadcrumb'));

    }

还有我的类别控制器

class Category extends Model implements Searchable
{
    protected $table = 'categories';
    protected $fillable = [
        'name'
    ];
    public function categories(){
        return $this->hasMany('App\Category','id');
    }

    public function products(){
        return $this->hasMany('App\Product','id');
    }
}

还有我的产品控制器

class Category extends Model implements Searchable
{
    protected $table = 'categories';
    protected $fillable = [
        'name'
    ];
    public function categories(){
        return $this->hasMany('App\Category','id');
    }

    public function products(){
        return $this->hasMany('App\Product','id');
    }
}

Answer 2

要查找具有Products 的Categories，如给定的searchTerm，您可以执行以下操作：

SearchController.php

class SearchController extends Controller
{
    public function index(Request $Request)
    {
        $searchTerm = $request->product;

        $categories = Categories::whereHas('products', function ($query) use ($searchTerm){
            $query->where('name', 'like', '%'.$searchTerm.'%');
        })
        ->with(['products' => function($query) use ($searchTerm){
            $query->where('name', 'like', '%'.$searchTerm.'%');
        }])->get();

        return view('search-results-view', compact('categories));
    }
}

然后，您将拥有一个 collection 或 Categories，其中 Products 已加载。

将$categories 传递给返回的视图（上图）后，您将能够在刀片文件中循环Categories 和相关的Products。

search-results-view.blade.php

@foreach ($categories as $category)
  <h4>{{ $category->name }}</h4>

  @foreach ($category->products as $product)
    {{ $product->name }}
  @endforeach
@endforeach

您可以使用相同的主体来处理您的 Brands 模型。