How to render formatted data to html in Python Flask Framwork?

Question

I have some formatted data in MongoDB, named i:

<p><strong>some string</strong></p>

But when I render it with flask and jinjia, like:

{% for i in example %}
    <div>{{ i }}</div>
{% endfor %}

The Browser show me:

<p><strong>some string</strong></p>

But I want to just get:

some string

I do it using ajax and put the formatted data in html, using jQuery html() method.

But how can I do it just in template rendering part?

It would really help to see your code here. A github url would suffice. Cheers! — Michael
– Michael, Commented Jan 13, 2015 at 14:18
Have you tried the safe filter? jinja.pocoo.org/docs/dev/templates/#safe — Ngenator
– Ngenator, Commented Jan 13, 2015 at 14:18

André Laszlo · Accepted Answer · 2015-01-13 16:18:25Z

2

Jinja2 escapes html by default. To mark data as safe for printing as html, use the safe filter.

Either like this:

{{ myvariable|safe }}

Or turn escaping off for a block:

{% autoescape false %}
    <p>autoescaping is disabled here
    <p>{{ will_not_be_escaped }}
{% endautoescape %}

Flask depends on Jinja by default, but you can use a different template engine if you please, but Jinja still needs to be installed.

More information:

answered Jan 13, 2015 at 14:20

André Laszlo

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2 Comments

It really helps, thank you. Before your answer, I thought the problem was caused by flask framework.

It's easy to confuse them, I added some links to my answer for future reference.