Render fields in Bootstrap 5

example/templates/app/pagination.html

@@ -18,8 +18,8 @@
 
     <hr>
 
-    {% bootstrap_pagination lines url="/pagination?page=1&flop=flip" extra="q=foo" size="small" %}
+    {% bootstrap_pagination lines url="/pagination?page=1&flop=flip" extra="q=foo" size="sm" %}
 
-    {% bootstrap_pagination lines url="/pagination?page=1" size="large" %}
+    {% bootstrap_pagination lines url="/pagination?page=1" size="lg" %}
 
 {% endblock %}

src/django_bootstrap5/renderers.py

@@ -43,6 +43,8 @@
 class BaseRenderer(object):
     """A content renderer."""
 
+    SIZES = ["sm", "md", "lg"]
+
     def __init__(self, *args, **kwargs):
         self.layout = kwargs.get("layout", "")
         self.form_group_class = kwargs.get("form_group_class", FORM_GROUP_CLASS)
@@ -62,21 +64,14 @@ def __init__(self, *args, **kwargs):
         )
 
     def parse_size(self, size):
-        size = text_value(size).lower().strip()
-        if size in ("sm", "small"):
-            return "small"
-        if size in ("lg", "large"):
-            return "large"
-        if size in ("md", "medium", ""):
-            return "medium"
-        raise BootstrapError('Invalid value "%s" for parameter "size" (expected "sm", "md", "lg" or "").' % size)
+        size = text_value(size).lower().strip() or "md"
+        if size not in self.SIZES:
+            valid_sizes = ", ".join([f'"{size}"' for size in self.SIZES])
+            raise BootstrapError(f'Invalid value "{size}" for parameter "size" (valid values are {valid_sizes}).')
+        return size
 
     def get_size_class(self, prefix="form-control"):
-        if self.size == "small":
-            return prefix + "-sm"
-        if self.size == "large":
-            return prefix + "-lg"
-        return ""
+        return f"{prefix}-{self.size}" if self.size in ["sm", "lg"] else ""
 
     def _render(self):
         return ""

tests/test_bootstrap_field.py

@@ -0,0 +1,15 @@
+from django import forms
+from django.test import TestCase
+
+from .test_templates import render_template_with_bootstrap
+
+
+class BootstrapFieldTest(TestCase):
+    def test_bootstrap_field_text(self):
+        class TestForm(forms.Form):
+            name = forms.CharField()
+
+        test_form = TestForm()
+        test_form.fields["name"].widget.attrs["class"] = "form-control"
+        html = render_template_with_bootstrap("{{ form.name }}", context={"form": test_form})
+        self.assertHTMLEqual(html, '<input type="text" class="form-control" id="id_name" name="name" required>')

tests/test_templatetags.py

@@ -437,11 +437,8 @@ def _test_size_medium(param):
             self.assertNotIn("form-control-md", res)
 
         _test_size("sm", "form-control-sm")
-        _test_size("small", "form-control-sm")
         _test_size("lg", "form-control-lg")
-        _test_size("large", "form-control-lg")
         _test_size_medium("md")
-        _test_size_medium("medium")
         _test_size_medium("")
 
     def test_datetime(self):