Add "input_class" argument to "bootstrap_field (zostera#525)

CHANGELOG.md

@@ -5,6 +5,7 @@
 - Drop support for Python 3.7 in test matrix (#533).
 - Fix support for Django 4.2 in test matrix (#533).
 - Pass "horizontal_field_offset_class" to child renderers (#391, #521).
+- Add "input_class" argument to "bootstrap_field (#525)".
 
 ## 23.3 (2023-06-03)
 

src/django_bootstrap5/renderers.py

@@ -246,6 +246,8 @@ def __init__(self, field, **kwargs):
             else success_css_class
         )
 
+        self.input_class = kwargs.get("input_class", "")
+
     @property
     def is_floating(self):
         return (
@@ -302,7 +304,7 @@ def add_widget_class_attrs(self, widget=None):
         size_prefix = None
 
         before = []
-        classes = [widget.attrs.get("class", "")]
+        classes = [widget.attrs.get("class", ""), self.input_class]
 
         if ReadOnlyPasswordHashWidget is not None and isinstance(widget, ReadOnlyPasswordHashWidget):
             before.append("form-control-static")

src/django_bootstrap5/templatetags/django_bootstrap5.py

@@ -472,6 +472,11 @@ def bootstrap_field(field, **kwargs):
 
             :default: ``'has-success'``. Can be changed :doc:`settings`
 
+        input_class
+            CSS class added to the input html element
+
+            :default: ``''``
+
     **Usage**::
 
         {% bootstrap_field field %}

tests/test_bootstrap_field.py

@@ -68,6 +68,12 @@ def _test_size_medium(param):
         _test_size_medium("md")
         _test_size_medium("")
 
+    def test_input_class(self):
+        self.assertIn(
+            'class="form-control foobar-class"',
+            self.render('{% bootstrap_field form.subject input_class="foobar-class" %}', {"form": SubjectTestForm()}),
+        )
+
     def test_label(self):
         self.assertEqual(
             self.render('{% bootstrap_label "foobar" label_for="subject" %}'),