flask template error: string returned from a python dict resulted in html code [duplicate]

Question

I make some simple web with flask (for educational purpose). when I try to assign a string value inside a python dict, all apostrophe(') change into '. here is my dummy code:

@app.route('/')
def index():
    a={}
    dummy=[]
    dummy2={}
    dummy2['SGD']='testing'
    dummy2['USD']='testingagain'
    dummy.append(dummy2)
    a['lalala']=dummy
    dummy=[]
    dummy3={}
    dummy3['SGD']='testtillbored'
    dummy3['USD']='testtillbored2'
    dummy.append(dummy3)
    a['lalalala']=dummy
    return render_template('main.html',**locals())

and my main.html:

<!DOCTYPE HTML>
<html>
<meta charset='utf-8'>
<body>
<script>
var x={{a}};
console.log(x);
</script>
</body></html>

Actually, I have succeeded in getting data when I using Ajax call. So I dump the dict into json and catch it when the webpage loads. So my question is, how to get the data in json without having to use ajax call?

Tim McDonald · Accepted Answer · 2016-12-11 03:18:59Z

0

You can use the jinja json filter

<script>
var some_json = {{some_dict|tojson|safe}}
console.log(some_json)
</script>

answered Dec 11, 2016 at 3:18

Tim McDonald

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