如何使用django中的html解析来自context_data的json文件 [英] How to parse a json file from context_data with html in django

问题描述

我有一个这样的JSON文件

I have a JSON file that looks like this

{    
        "values": {
            "a": 1,
            "b": 2,
            "c": 3,
            "d": 4
        },
    "sales": [
        { "a": 0, "b": 0, "c": 0, "d": 0, "e": "karl" },
        { "a": 0, "b": 0, "c": 0, "d": 0, "e": "karl" },
        { "a": 4, "b": 10, "c": 20, "d": 30, "e": "karl" },
        { "a": 0, "b": 0, "c": 0, "d": 0, "e": "karl" }
    ]
}

而且我通过 get_context_data

import json
class MyCreateView(CreateView):

    def get_context_data(self, **kwargs):
        context = super(MyCreateView, self).get_context_data(**kwargs)

        with open('/path/to/my/JSON/file/my_json.cfg', 'r') as f:
                    myfile = json.load(f)
                    context['my_json'] = my_data

当我做 print myfile [sales] [0] [a] 我得到 0 ，当我把 {{my_json}} 加入 index.html 然后我得到整个数组。

which works, when I do print myfile["sales"][0]["a"] I get 0 and when I put {{my_json}} into the index.html then I get the whole array.

所以现在我的问题是如何最好地阅读价值。我必须为每个值创建上下文变量，还是可以读取我的html中的json数组？

So now my question is how to read the values best. Do I have to create context variables for each of the values or is it possible to read the json array in my html?

我尝试过 {{my_json [sales] [0] [a]}} 't work

I tried {{my_json["sales"][0]["a"]}} but didn't work

推荐答案

如果你想获得 myfile [sales] [0] [您可以使用模板中的] ：

{{my_json.sales.0.a}}

a] 可以这样做：

or if you want to get myfile["values"]["a"] this can be done like:

{{my_json.values.a}}

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