Render a raw string with Jinja

Question

I have a string that I want to treat as a Jinja template. I tried returning the string, but it gets sent as is, Jinja doesn't render it. I do not want to make a template file to render it with render_template. How can I render the string with Jinja?

@app.route('/results')
def results():
    template = '''<div class="results">
        {% for option in options() %}
            <p>{{ option }}</p>
        {% endfor %}
    </div>
    '''
    return template

What "templating function" are you expecting to "kick in" here? You return a raw string, so that's what is sent to the client. — Daniel Roseman, May 20 '16 at 08:45
maybe i should change my question to, "how to render a raw string as html"? — glls, May 20 '16 at 08:51
Still don't understand what you're asking. What are you seeing on the browser, and how does this differ from what you're expecting to see? — Daniel Roseman, May 20 '16 at 08:59

score 5 · Accepted Answer · edited May 20 '16 at 14:28

You are looking for render_template_string.

flask.render_template_string(source, **context)

Renders a template from the given template source string with the given context.

Parameters:

source – the sourcecode of the template to be rendered

context – the variables that should be available in the context of the template.

from flask import render_template_string

Call it on your HTML string to render it, and return the result.

return render_template_string(template)

Render a raw string with Jinja

1 Answers1