創建一個由模型屬性和相關軸數組成的字段排序的搜索表單

Question

我試圖爲我的Laravel應用程序創建一個搜索表單。基本上用戶可以輸入一些字段（可搜索的模型相關的，如標題）並以不同的方式對其進行排序;標題，創建日期，還可以計票或計數。最後兩個是數據透視表（多對多關係）的結果。

我一直在努力，但我不知道如何繼續。這是我到目前爲止：

public function search(SearchRequest $request) 
{ 
    $posts = Post::where('published', 1); 

    if (strlen($request->title) > 0) { 
     $posts->where('title', 'like', '%' . $request->title . '%'); 
    } 

    switch($request->order_by) { 
     case 'title' : $orderBy = 'title'; break; 
     case 'createDate' : $orderBy = 'created_at'; break; 
     case 'favorites' : $orderBy = 'post_favorites.count(*)'; break; 
     case 'votes' : $orderBy = 'post_votes.count(*)'; break; 
    } 

    $posts->orderBy($orderBy, $request->order_by_direction); 
    $posts = $posts->get(); 

    var_dump($posts); 
} 

爲了保持簡單，我已將代碼重寫爲典型的博客文章示例。感謝您的建議。

Answer 1

會對它進行刺探，但它沒有測試，因爲沒有什麼可以測試它等等，所以與我一起裸露，其他可能會更簡單，但希望它可以幫助。

public function search(SearchRequest $request) 
{ 

    if(count($request->get('title')) > 0){ 
     $search_text = $request->get('title'); 
     $order_by = $request->get('order_by'); 
     $display_by = $request->get('order_by_direction'); 

     $search_results = Post::where('title', 'like', '%' . $search_text . '%')->get(); 

     if($display_by == 'asc') return this::orderSearchResults($search_results, $order_by); 

     return this::orderSearchResults($search_results, $order_by)->reverse(); 

    } else { 
     //do something else here 
    } 
} 

private function orderSearchResults($search_results, $order_by) 
{ 
     switch ($order_by) { 
      case 'title' : 
       return $search_results->sortby('title'); 
       break; 
      case 'createDate' : 
       return $search_results->sortby('created_at'); 
       break; 
      case 'favorites' : 
       return $search_results->sortby(function($search){ 
        return count($search['post_favorites']); 
       }); 
       break; 
      case 'votes' : 
       return $search_results->sortby(function($search){ 
        return count($search['post_votes']); 
       }); 
       break; 
      default : 
       return $search_results; 
       break; 
     } 
} 

第二部分是基於所得到的返回作爲一個集合等

Answer 2

我是在一個類似的情況，我必須得與不同領域的搜索選項（在名稱搜索，電子郵件用戶，電話等），並按帖子或姓名或電子郵件數量排序......並按預期工作。我試圖重寫代碼以匹配您提供的示例。

// if the user didn't fill the field, we assign default values 
    $searchText = $request->input('searchText') ?: null; // the terms we are looking for 
    $targetField = $request->input('targetField') ?: 'title'; // in which field we want to search 
    $orderBy = $request->input('orderBy') ?: 'id'; // field used to order the results 
    $order = $request->input('order') ?: 'DESC'; // order direction 

    // from here we start assembling our query depending on the request 
    $query = DB::table('posts')->select('*')->where('published', 1); 

    // if the user typed something in search bar, we look for those terms 
    $query->when($searchText, function($query) use ($searchText,$targetField) { 
    return $query->where($targetField,'like','%'.$searchText.'%'); 
    }); 

    // if the user wants to order by votes 
    $query->when($orderBy === 'votes', function ($query) use ($order) { 
    return $query->addSelect(DB::raw('(select count(post_id) from post_votes where post_votes.post_id = posts.id) AS nbvotes')) 
       ->orderBy('nbvotes',$order)); 
    }); 
    // apply same logic for favorites 

    // if the orderBy is neither favorites or votes, by name or email for example... 
    $query->when($orderBy != 'favorites' && $orderBy != 'votes', function ($query) use ($orderBy,$order) { 
    return $query->orderBy($orderBy,$order); 
    }); 

    // executing the query 
    $posts = $query->get();