Question

我正在使用MVC模型（django）。我在模板中有一个for循环，用于从sqlite3数据库收集数据。我需要填充一个JavaScript变量（使用JSON格式）从数据库中分割radar.client字段。此字段是逗号分隔值字符串。我需要在不同的“子”值中将其解析为json。现在让我进入练习。

生成json var的代码如下所示：

var json = {
    "id": "1",
    "name": "Server",
    "children": [
      {% if clave_radar % }
        {% for radar in clave_radar % }
        {"id": "{{ radar.key }}",
         "name": "{{ radar.ap }}",
         "data": {"": "", "": ""},
         "children": [
//This is where I need to split in different children
               {"id": "1_{{ radar.key }}",
                "name": "{{ radar.clients }}",
                "data": {"": "", "": ""},
                "children": []},

         ]},
          {% endfor % }
      {% endif % }
    ],
};

现在让我向您展示一个示例，说明服务器中处理过的代码如何为客户端显示：

  var json_test={
    "id": "1",
    "name": "Server",
    "children": [
      {
        "id": "13",
        "name": "WLT",
        "data": {"": "","": ""},
        "children": [
          {
            "id": "1_13",
            "name": "081196(Intel Corporate), 68a3c4(Liteon Technology Corporation), b8d9ce(Samsung Electronics)",
            "data": {"": "","": ""},
            "children": []
          },
          //Children Liteon and Samsung should appear here and not packed in 1_13
        ]
      },
      ],
  };

这就是我努力让它看起来像：

varjson_real={
  "id": "1",
  "name": "Server",
  "children": [
    {
      "id": "13",
      "name": "WLT",
      "data": {"": "","": ""},
      "children": [
        {
          "id": "1_13",
          "name": "081196(Intel Corporate)",
          "data": {"": "","": ""},
          "children": []
        },
        {
          "id": "2_13",
          "name": "68a3c4(Liteon Technology Corporation)",
          "data": {
            "": "",
            "": ""
          },
          "children": []
        },
        {
          "id": "3_13",
          "name": "b8d9ce(Samsung Electronics)",
          "data": {"": "","": ""},
          "children": []
        },
      ]
    },  
  ]
};

Answer 1

为什么不循环客户端，如下所示：

var json = {
"id": "1",
"name": "Server",
"children": [
{% if clave_radar % }
    {% for radar in clave_radar % }
        {"id": "{{ radar.key }}",
         "name": "{{ radar.ap }}",
         "data": {"": "", "": ""},
         "children": [
         {% for client in radar.clients %}
              {"id": "1_{{ radar.key }}",
               "name": "{{ client }}",
               "data": {"": "", "": ""},
               "children": []},
         {% endfor % }
         ]},
    {% endfor % }
{% endif % }
],
};

Answer 2

我刚刚找到了解决这个问题的方法。首先，我受this how to split a string to an array with django

的启发

我将此功能添加到radar模型中：

def list_clients(self):
    return self.clientes_encontrados.split('), ')

然后，代码想要像：

var json_radar = {
    "id": "1",
    "name": "Server",
    "children": [
    {% if clave_radar %}
      {% for radar in clave_radar %}
        {"id": "{{ radar.key }}",
        "name": "{{ radar.ap }}",
        "data": {"": "","": ""},
        "children": [
          {% if radar.clients != "null" %}
            {% for client in radar.list_clients %}
          {"id": "1_{{ radar.key }}",
           "name": "{{ client }}",
           "data": {"": "", "": ""},
           "children": []},
            {% endfor %}
          {% endif %} 

        ]},
        {% endfor %}
    {% endif %}  
    ],
};

JavaScript拆分字符串变量（不使用任何额外变量）

2 个答案: