Django:使用 Javascript 在我的模板中解析 JSON [英] Django: Parse JSON in my template using Javascript

问题描述

我认为:

string_location = myaddress2地理数据 = []对于 g.geocode(string_location,exactly_one=False) 中的位置 (lat, lng):geodata.append((place, (lat, lng)))geodata_results = len(地理数据)数据 = {地理数据":地理数据，地理数据结果":地理数据结果}return render_to_response("business/business_view.html",数据，context_instance=RequestContext(request))

我将如何处理"/将 geodata 转换为 JSON 并将其传递给我的模板，以便我可以像数组一样循环"它?

我认为我可以这样做是否正确?如果没有，请提出更好的解决方案.

谢谢！

更新

var geodata = "[["ML奎松街<br/>菲律宾曼达维市&quot;, [10.351381999999999, 123.923535]], ["Talamban&lt;br/>菲律宾宿务市", [10.353527, 123.91352500000001]]]";

我认为 JSON 没有被转义?如何转义 json 字符串中的特殊字符?我不断收到换行错误.

对于 PHP，我会使用 json_encode() 来解决这个问题.就像在这篇文章中一样:将 PHP 字符串传递给一个 JavaScript 变量(并转义换行符) 但是我如何在 Python/Django 中做到这一点?

解决方案

你可以使用内置的 json 模块:

<预><代码>>>>导入json>>>地理数据 = [(这里"，(1003,3004))，(那里"，(1.2,1.3))]>>>json.dumps(地理数据)'[["这里", [1003, 3004]], ["那里", [1.2, 1.3]]]'

然后您可以简单地将结果字符串嵌入到 javascript 脚本中:

I have this in my view:

string_location = myaddress2
    geodata = []
    for place, (lat, lng) in g.geocode(string_location,exactly_one=False):
        geodata.append((place, (lat, lng)))

    geodata_results = len(geodata)

    data = {"geodata": geodata, "geodata_results":geodata_results }
    return render_to_response("business/business_view.html",
                              data, context_instance=RequestContext(request))

How would I "handle" / convert geodata into JSON and pass it to my template so that I can "loop" through it like an array?

Am I right to think that I can do it this way? If not, then please suggest on a better solution.

Thanks!

UPDATE

var geodata = "[["M. L. Quezon Street<br/>Mandaue City, Philippines", [10.351381999999999, 123.923535]], ["Talamban<br/>Cebu City, Philippines", [10.353527, 123.91352500000001]]]"; 

I think the JSON is not escaped? How do I escape special characters inside the json string? I keep getting a newline error.

For PHP, I would json_encode() to fix this. Like in this post: Pass a PHP string to a JavaScript variable (and escape newlines) BUT how do I do that in Python/Django?

解决方案

You could use the built-in json module:

>>> import json
>>> geodata = [ ( "Here", (1003,3004) ), ("There", (1.2,1.3)) ]
>>> json.dumps(geodata)
'[["Here", [1003, 3004]], ["There", [1.2, 1.3]]]'

You can then simply embed the resulting string inside a javascript script:

<script type='text/javascript'>
var geodata = {{ geodata|safe }};
</script>

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