試圖將MySQL數據轉換爲d3的嵌套json文件？

Question

我想將MySQL數據庫數據轉換爲json格式。我的文件需要嵌套父母和孩子的格式。 （請參閱片段）這是因爲我試圖使用d3數據可視化（可摺疊樹佈局），它要求以某種方式格式化json數據。下面我附加了我所看到的json文件的片段。我有一些問題試圖編寫嵌套的SQL語句來做到這一點。我還附加了我的數據庫視圖，以瞭解我正在處理的內容。任何建議都會有很大幫助。謝謝！

我試圖讓JSON格式是這樣的：

{ 
    "name": "Projects", 
    "children": [ 
    { 
    "name":"category_name#1", "description":"category", 
    "children": [ 
    { 
      "name":"sub_category_name1", 
      "description":"category description text here", 
        "children":[ 
        {"name": "project1", 
        "description":"project 1 text goes here", 
           "children":[ 
         {"name":"mike", "email":"xxx@mail.com"}, 
         {"name":"dan", "email":"xxx@gmail.com"} 
         ] 
        }, 
        { 
        "name": "project2", 
        "description":"project 2 text goes here", 
           "children":[ 
         {"name":"steve", "email":"xxx@mail.com"}, 
         {"name":"chris", "email":"xxx@gmail.com"} 
           ]      
        } 
        ] 
      }, 
      { 
      "name": "sub_category_name2", 
      "description":"sub category description text goes here..", 
      "children": [ 
       {"name": "project3", 
       "description":"project3 text goes here ", 
       "children":[ 
        {"name":"Alex", "email":"xxx@gmail.com"}       
       ]     
       } 
      ] 
      } 

    ] 
    }, 
    . 
    . //more categories with children of subcategories and sub_cat children of projects 
    . 
} 

Answer 1

我已經成功與本教程過去： http://www.d3noob.org/2013/02/using-mysql-database-as-source-of-data.html

總之你會做什麼是創建一個連接到MySql的php文件，執行查詢並將結果轉換爲json。然後，您將使用此文件來代替d3代碼中的數據源。