How to convert list from python into comma separated values in python with jinja or javascript

Question

I want to synchronize my dropzone allowfiles templates with my python upload config allowed files. I can get jinja to spit out my UPLOAD_EXTENSIONS with config.UPLOAD_EXTENSIONS but I can not figure out how to format it into a string that can be used in my javascript allowdfiles format. See below for what I get vs what I want.

jinja html template

<script>
    let allowed_files = "{{ config.UPLOAD_EXTENSIONS }}";
    console.log(allowed_files)
</script>

Console Log

[&#39;.jpg&#39;, &#39;.png&#39;, &#39;.gif&#39;]

What I want is this string

.jpg,.png,.gif

mrash · Accepted Answer · 2022-05-20 18:51:21Z

1

You should use safe filter like this:

<script>
    let allowed_files = "{{ config.UPLOAD_EXTENSIONS|safe }}";
    console.log(allowed_files)
</script>

but it returns a result like this:

[".jpg", ".png", ".gif"]

If you want the exact use: console.log(allowed_files.join())

answered May 20, 2022 at 18:51

mrash

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