Trying to pass a nested list with JSON to JS with Flask

Question:

The problem is I’m passing my argument to the Javascript like this: link.

The variable "chatlist" is the problem. The value of that variable is

[[{"user": "lol"}, {"msg": "lol has created this chat."}], [{"user": "lol"}, {"msg": "lol"}]]

But when I try to access that variable through this code: link, it ends up looking like

[[{"user": "lol"}, {"msg": "lol has created this chat."}], [{"user": "lol"}, {"msg": "lol"}]]

What I’m expecting is in both my Python code and my Javascript, I get

[[{"user": "lol"}, {"msg": "lol has created this chat."}], [{"user": "lol"}, {"msg": "lol"}]]

as the value of the variable labelled "chatList". This value also needs to be "parsable" (not sure if that’s the right word). I need to be able to access all elements of the list and all keys and values of each dictionary in each element.

Asked By: billyBob456

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Source

Answers:

It looks like the double quotes are getting HTML escaped.

I would solve this by using Javascript’s decodeURI() method.

Answered By: VerteronParticle

Pass the list as is to render_template.

return render_template("chat.html", chatlist=chatInfo, pin=pin)

In the template you can use the jinja filter tojson.

var chatList = {{ chatlist | tojson }};
console.log(chatList);
Answered By: Detlef