Markdown does not render as html in template

[GasparPizarro]

I am adding a very simple blog functionality to my app, where I need some users to get in the admin, write a markdown-based post in it, then saving it and showing in a view (no comments, no previous-next post, no search, no nothing, just user-created pages). I have replaced the zinnia/entry_detail.html with a custom template, which has at some point

{{ entry.html_content | safe}}

Expected behavior

I have a post with markdown markup, like this:

*Lorem Ipsum* is simply dummy text of the printing and typesetting industry

when I see the html_content in the console it is the corresponding html:

In [19]: print(entry.html_content)
<p><em>Lorem Ipsum</em> is simply dummy text of the printing and typesetting industry.</p>

I expect in a template to render the same.

Actual behavior

The text renders without the processed markdown, like this:

<p>*Lorem Ipsum* is simply dummy text of the printing and typesetting industry.</p>

Notice that the <p> tags are correct, I am not setting them by hand (my template does not have <p> surrounding the html_content), but the text inside is not processed. Is this expected behavior?

Steps to reproduce the issue

1. Setup a django project and install zinnia.
2. In a local app, create the file templates/zinnia/entry_detail.html.
3. In entry_detail.html add {{ entry.html_content | safe }}.
4. Get the rendered source html.

Specifications

• Zinnia version: 0.20
• Django version: 2.0.5
• Python version: 3.5.2
• Operating system: Ubuntu 18.04