Empty string label for BooleanField escapes html of checkbox

[lyndonscotthumphris]

Issue

When trying to render a checkbox form field with the label being an empty string, instead of seeing the rendered checkbox we see escaped html.

Versions

• Django: 4.2.24
• django-bootstrap5: 25.1
• Bootstrap: 5.3.0

Steps to reproduce

Simple steps to reproduce issue.

# forms.py
from django import forms

class TestForm(forms.Form):
    agree = forms.BooleanField(label='', required=False)

{# template.html #}
{% load django_bootstrap5 %}

<form method="post">
    {% csrf_token %}
    {% bootstrap_field form.agree %}
    <button type="submit">Submit</button>
</form>

# views.py
from django.shortcuts import render
from .forms import TestForm

def test_view(request):
    form = TestForm()
    return render(request, "template.html", {"form": form})

My thoughts

django-bootstrap5/src/django_bootstrap5/renderers.py

Line 381 in d1d54f5

def get_label_html(self, horizontal=False):

If label_html = "", this method just returns label_html. Then in:

django-bootstrap5/src/django_bootstrap5/renderers.py

Line 475 in d1d54f5

def render(self):

If we have a checkbox field, this code in render() might not return safe html with the field = field + label:

if self.field_before_label():
    label = self.get_label_html()
    field = field + label
    label = mark_safe("")
    horizontal_class = merge_css_classes(self.horizontal_field_class, self.horizontal_field_offset_class)