[Django]-How do I input HTML into the help text of a Django form field?

You can alternatively mark it as safe in the template if you loop through the form yourself:

{% for f in form %}
    {{f.label}}{{f}}{{f.help_text|safe}}    
{%endfor%}

That’s a very simple example of doing so in the template. You would need to do more than that to make it look nice.

You can use an external file to increase maintainability and separation of concern:

1. modify yourform’s __init__() method ;
2. after the super(MyForm, self).__init__(*args, **kwargs) ;
3. assign the result of render_to_string() to self.fields['my_field'].help_text.

forms.py

from django.template.loader import render_to_string

class MyForm(forms.ModelForm):
    def __init__(self, *args, **kwargs):
        super(MyForm, self).__init__(*args, **kwargs)
        # Only in case we build the form from an instance,
        if 'instance' in kwargs and kwargs['instance'].nature == consts.RiskNature.RPS:
            self.fields['my_field'].help_text = render_to_string('components/my-template.html')
            #                      ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ 

my-template.html

{% load i18n %}
<table class="table table-bordered">
    <tr>
        <th>{% trans 'Externe' %}</th>
    </tr>
    <tbody class="text-muted">
        <tr>
              <td>{% trans "En lien avec les relations de travail" %}</td>
          </tr>
          <tr>
              <td>{% trans "-" %}</td>
          </tr>
    </tbody>
</table>

Use a textarea tag with readonly

<textarea readonly> <p>stuff</p> </textarea>