Laravel高级搜索查询修复程序

Question

我有一个具有多个输入和选择框的搜索表单，如果我的查询中有条件的话，我需要得到帮助，以便每个部分同时独立工作。

这是我的刀片代码：

<form action="{{route('advancesearch')}}" method="post">
      {{csrf_field()}}
      <div class="sidebar-title">
        <span>Advanced Search</span>
        <i class="fa fa-caret-down show_sidebar_content" aria-hidden="true"></i>
      </div>
      <!-- ./sidebar-title -->

      <div id="tags-filter-content" class="sidebar-content">
        <div class="filter-tag-group">

          @foreach($options as $option)
          <div class="tag-group">
            <p class="title">
              <span class="filter-title show_filter_content">{{$option->title}} <span class="pull-right"><i class="fa fa-minus"></i></span></span>
            </p>
            <div class="filter-content">
              <div class="checkbox">
              @foreach($option->suboptions as $suboption)
              <label for="suboptions">
                <input name="suboptions[]" type="checkbox" value="{{$suboption->id}}">
                {{ucfirst($suboption->title)}}
              </label>
              @endforeach
            </div>
          </div>
          </div>
          @endforeach
          <!-- ./tag-group -->

          <div class="tag-group">
            <p class="title">
              <span class="filter-title show_filter_content">Brand <span class="pull-right"><i class="fa fa-minus"></i></span></span>
            </p>
            <div class="filter-content">
              <div class="checkbox">
              @foreach($brands as $brand)
              <label for="brands">
                <input name="brands[]" type="checkbox" value="{{$brand->id}}">
                {{$brand->title}}
              </label>
              @endforeach
            </div>
          </div>
          </div>
          <!-- ./tag-group -->

          <div class="tag-group">
            <p class="title">
              <span class="filter-title show_filter_content">Price Range <span class="pull-right"><i class="fa fa-minus"></i></span></span>
            </p>
            <div class="row filter-content">
              <div class="col-md-6">
                <div class="form-group">
                  <label for="min_price" hidden>Min</label>
                  <input type="text" name="min_price" class="form-control" placeholder="Rp Min">
                </div>
              </div>
              <div class="col-md-6">
                <div class="form-group">
                  <label for="max_price" hidden>Max</label>
                  <input type="text" name="max_price" class="form-control" placeholder="Rp Max">
                </div>
              </div>
            </div>
          </div>
          <!-- tag-group -->

          <div class="text-center mt-20">
            <button type="submit" class="btn btn-danger">TERPAKAN</button>
          </div>

        </div><!-- ./filter-tag-group -->
      </div><!-- ./sidebar-content -->
    </form>

，这是我的路线：

Route::post('/advanced-search', 'frontend\SearchController@filter')->name('advancesearch');

最后我的函数代码是：

public function advancedsearch(Request $request) {
        $brands = Brand::all(); // uses for other part of the page. (not related to search function)
        $options = Option::all(); // uses for other part of the page. (not related to search function)
        $suboptions = DB::table('product_suboption'); // where my product_id and subopyion_id saves

        //search function
        $products = Product::where(function($query){
            //getting inputs
            $suboptions2 = Input::has('suboptions') ? Input::get('suboptions') : [];
            $min_price = Input::has('min_price') ? Input::get('min_price') : null;
            $max_price = Input::has('max_price') ? Input::get('max_price') : null;
            $brands2 = Input::has('brands') ? Input::get('brands') : [];

            //returning results
            $query->where('price','>=',$min_price)
                    ->where('price','<=',$max_price);
            })->get();

        return view('front.advancesearch', compact('products', 'brands', 'options'));
    }

我的模特关系：

product模型：

public function options(){
     return $this->belongsToMany(Option::class);
  }
  public function suboptions(){
     return $this->belongsToMany(Suboption::class, 'product_suboption', 'product_id', 'suboption_id');
  }
public function brand(){
     return $this->belongsTo(Brand::class);
  }

Option模型：

public function suboptions(){
     return $this->hasMany(Suboption::class, 'option_id');
  }

  public function products(){
     return $this->belongsToMany(Product::class);
  }

Suboption模型：

public function option(){
     return $this->belongsTo(Option::class, 'option_id');
  }

  public function products(){
     return $this->belongsToMany(Product::class);
  }

Brand模型：

public function products(){
     return $this->hasMany(Product::class);
}

备注

我的brands搜索来自products表，其中每个产品都有列brand_id。

但

我的suboptions来自名为product_suboption的第三个表(正如您在我的模型代码中看到的)，其中我保存了product_id和suboption_id。

Answer 1

解出

在玩了几周的代码之后，我终于得到了正确的结果(在我的例子中，它对其他人来说是这样的，也许可以用其他建议的答案)。

public function advancedsearch(Request $request) {
    $options = Option::all();
    $brands = Brand::all();
    $brandss = Input::has('brands') ? Input::get('brands') : [];
    $suboption = Input::has('suboptions') ? (int)Input::get('suboptions') : [];
    $min_price = Input::has('min_price') ? (int)Input::get('min_price') : null;
    $max_price = Input::has('max_price') ? (int)Input::get('max_price') : null;

    //codes
    if(count($request['suboptions'])){
      $products = DB::table('products')
      ->join('product_suboption', function ($join) {
        $suboption = Input::has('suboptions') ? Input::get('suboptions') : [];
            $join->on('products.id', '=', 'product_suboption.product_id')
                 ->where('product_suboption.suboption_id', '=', $suboption);
        })
      ->paginate(12);
    }

    elseif(count($request['brands'])){
      $products = DB::table('products')
      ->whereIn('products.brand_id', $brandss)
      ->paginate(12);
    }

    elseif(count($request['min_price']) && count($request['max_price'])){
      $products = DB::table('products')
      ->whereBetween('price', [$min_price, $max_price])
      ->paginate(12);
    }


    return view('front.advancesearch', compact('products', 'brands', 'options'));
    }

注意:我的大部分定价问题都是用(int)解决的，就像你在代码(int)Input::get('min_price')和(int)Input::get('max_price')中看到的那样。

特别感谢Ravindra Bhanderi的count($request['']建议。

Answer 2

这只是给出一个想法。您可以为查询使用多个->where()并急切地加载->with()。请看一下下面的查询：

$products = Product::where('price', '>=', $min_price) // you get the max and min price 
        ->where('id', '<=', $max_price)->select('id')
        ->with([
            "brand" => function ($query) {
                $query->whereIn('id', $brand_ids); // [1, 2, 3,...]
            },
            "specifications" => function ($query) {
                $query->where('some_column', '=', 'possible-value'); // single condition
            },
            "specifications.subspecifications" => function ($query) {
                $query->where([
                    'some_column' => 'possible-value',
                    'another_column' => 'possible-value'
                ]); // you can also pass arrays of condition
            }
        ])->get(); // This will return the products with the price set by the user
                   // Since we're just using ->with(), this will also return those products
                   // that doesn't match the other criteria specifications) so we 
                   // still need to filter it.

最后，您可以筛选与specifications匹配的产品--带有空specifications的product意味着该产品不符合标准，因此我们必须将其从集合中删除。

$filtered =  $products->filter(function ($product, $key) {
    return count($product->brand) > 0 && count($product->specifications) > 0;
    // add your other boolean conditions here
});

dd($filtered->toArray()); // your filtered products to return

Answer 3

您可以使用laravel orWhere和orWhereHas分别获得结果，假设您没有选择min_price和max_price，但是您已经选择了brand，那么所有带有这个brnad的产品都应该返回，您的查询将如下所示

$products = Product::orWhere('price','>=',$min_price)
->orWhere('price','<=',$max_price)
->orWhereHas('brand',function($query){
    $query->whereIn('id', $brand_ids);
})
->orWhereHas('suboptions',function($query){
    $query->whereIn('id', $suboptions_ids);
})
->orWhereHas('subspecifications',function($query){
    $query->whereIn('id', $subspecifications_ids);
})->get(); 

如果上述查询中所述的任何条件匹配，$products将拥有产品集合。

希望这能有所帮助。