[rentals] Use widget_tweaks to apply CSS classes to form fields

... instead of subclassing ModelForm to apply a class to all fields

rentals/forms.py

@@ -3,14 +3,7 @@ from django import forms
 from rentals.models import LockerInfo
 
 
-class BoostrapModelForm(forms.ModelForm):
+class LockerInfoForm(forms.ModelForm):
-    def __init__(self, *args, **kwargs):
-        super().__init__(*args, **kwargs)
-        for field in self.fields.values():
-            field.widget.attrs["class"] = "form-control"
-
-
-class LockerInfoForm(BoostrapModelForm):
     class Meta:
         model = LockerInfo
         fields = [

rentals/templates/rentals/lockers.dj.html

@@ -1,5 +1,7 @@
 {% extends "base.dj.html" %}
 
+{% load widget_tweaks %}
+
 {% block title %}Lockers Index{% endblock %}
 {% block admin_link %}
   {% url 'admin:app_list' 'rentals' %}
@@ -81,7 +83,7 @@
                       <fieldset {{ perms.rentals.change_lockerinfo|yesno:",disabled" }}>
                         {% for field in locker_form.visible_fields %}
                           <div class="form-floating mb-3">
-                            {{ field }}
+                            {% render_field field class+="form-control" %}
                             {{ field.label_tag }}
                             {{ field.errors }}
                             {% if field.help_text %}