Laravel查詢主鍵結果。

Question

我有問題與我的查詢。我有4個用戶，潛在客戶，潛在客戶，項目。所有這些都有關聯

oneToMany relation喜歡用戶有很多前景，潛在客戶有很多潛在客戶，潛在客戶有很多項目。我的項目是我需要數據的表格。項目表如下所示。

$table->increments('id'); 
      $table->integer('lead_id'); 
      $table->string('sales_phase',11); // the sale_phase has 4 category only A,B,C,D 
      $table->string('product_name',32); 
      $table->decimal('price',8,2)->default(0.00); 
      $table->integer('qty'); 
      $table->integer('probability')->default(0); 
      $table->decimal('forcast',8,2)->default(0.00); 
      $table->string('note')->nullable(); 
      $table->timestamps(); 

我需要通過sales_phase得到forcast和group的總和。我需要2個結果。

1. sales_phase獲取FORCAST組之和衛生組織lead_id是活動的（信息表有效= 1）

2.獲取FORCAST組由sales_phase用於用戶的總和。 （用戶>潛在客戶>潛在客戶>項目）

對於第一個結果，我可以通過以下查詢來製作數據透視表。但我怎麼能通過參數在哪裏條件，哪裏鉛活躍。並得到用戶的結果;

$data = DB::table('items') 
       ->select(DB::raw("lead_id, 
        SUM(CASE WHEN sales_phase='New Lead' THEN forcast ELSE 0 END) AS NEW_LEAD, SUM(CASE  

    WHEN sales_phase='Contact' THEN forcast ELSE 0 END) AS CONTACT, SUM(CASE WHEN 

    sales_phase='Quotation' THEN forcast ELSE 0 END) AS QUOTATION, SUM(CASE WHEN  

    sales_phase='Order' THEN forcast ELSE 0 END) AS ORDERS 
        ")) 
        ->groupBy('lead_id') 
        ->get(); 

請幫忙。我在sql中不夠好。

Answer 1

嘗試使用你的關係雄辯的方式。

問題1

$sum = Item::->with(['leads' => function($query) { 
     $query->where('lead', 'active') 
    }]) 
    ->groupBy('sales_phase') 
    ->selectRaw('SUM(forcast) AS sum, sales_phase') 
    ->pluck('sum', 'sales_phase'); 

問題2，對於用戶ID X

$userSum = User::where('id', X) 
    ->with(['prospects.leads' => function($query) { 
     $query->where('lead', 'active') 
    }]) 
    ->with(['prospects.leads.items' => function($query) { 
     $query->groupBy('sales_phase') 
     ->selectRaw('SUM(forcast) AS sum, sales_phase') 
    }])->get(); 

一些相關Laravel文檔：

• Querying relations
• groupBy
• Eager loading, and constraining eager loads