渲染JSON而不替换Jinja中的角色 [英] Render JSON without replacing characters in Jinja
问题描述
"
)而不是引号,这是无效的。如何正确地将JSON数据从Python传递到JavaScript? pieData = [{'color':'#400068', 'name':'xyz','value':10},{'color':'#4a8624','name':'abc','value':30}]
render_template('index.html ',piedata = json.dumps(pieData))
var pieData2 = {{piedata}};
//呈现为
var pieData2 = [{" color"#34;#5461ae"" name" :" fizi.yadav" value":10},{" color"#34;#e1dce4&#34 ,#34;#34;#34;#########surya.pradhan#34;#34;值#34 ;: 30},{#34;颜色#34 :#34;#7835f0"#34; name"#34; fred.hsu#34;#34; value":276 Jinja autoescapes潜在的不安全的字符(如引号)[b] [b] [b] [/ b] [/ b] )以避免安全问题。您需要通过使用模板中的 | safe
过滤器或将其包装在 Markup
在视图中。您也可以使用 | tojson
过滤器,而不是手动解析和标记JSON。使用标记
标记为安全的视图。 from markupsafe import标记
render_template('index.html',piedata = Markup(json.dumps(pieData)))
$ b
{{piedata | safe}}
/ code>
最好将其转换为模板,而不要调用 json.dumps
在视图中。老版本的Flask需要调用 | tojson | safe
,但不再需要 | safe
。
$ b {{piedata | tojson}}
I have some Python data that will be sent to a JavaScript chart. I dump it to JSON and pass it to the template. When I render the data, it contains html entities ("
) instead of quotes, which isn't valid. How do I correctly pass the JSON data from Python to JavaScript?
pieData = [{'color': '#400068', 'name': 'xyz', 'value': 10}, {'color': '#4a8624', 'name': 'abc', 'value': 30}]
render_template('index.html', piedata=json.dumps(pieData))
var pieData2 = {{ piedata }};
// renders as
var pieData2 = [{"color": "#5461ae", "name": "fizi.yadav", "value": 10}, {"color": "#e1dce4", "name": "surya.pradhan", "value": 30}, {"color": "#7835f0", "name": "fred.hsu", "value": 276}]
解决方案 Jinja autoescapes potentially unsafe characters (such as quotes) to avoid security issues. You need to tell it that the data you are rendering is safe, either by using the |safe
filter in the template or wrapping it in Markup
in the view. You can also use the |tojson
filter rather than parsing and marking the JSON manually.
Use Markup
to mark it safe from the view.
from markupsafe import Markup
render_template('index.html', piedata=Markup(json.dumps(pieData)))
Or mark it safe in the template.
{{ piedata|safe }}
Preferably, just convert it in the template without calling json.dumps
in the view. Older versions of Flask required calling |tojson|safe
, but the |safe
is no longer needed.
{{ piedata|tojson }}
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