Fix size code

src/django_bootstrap5/core.py

@@ -2,16 +2,6 @@
 
 from django.conf import settings
 
-from django_bootstrap5.exceptions import BootstrapError
-from django_bootstrap5.text import text_value
-
-SIZE_XS = "xs"
-SIZE_SM = "sm"
-SIZE_MD = "md"
-SIZE_LG = "lg"
-SIZES = [SIZE_SM, SIZE_MD, SIZE_LG]
-DEFAULT_SIZE = SIZE_MD
-
 BOOTSTRAP5_DEFAULTS = {
     "css_url": {
         "url": "https://cdn.jsdelivr.net/npm/bootstrap@5.0.0-beta2/dist/css/bootstrap.min.css",
@@ -94,20 +84,3 @@ def get_form_renderer(**kwargs):
 def get_field_renderer(**kwargs):
     renderers = get_bootstrap_setting("field_renderers")
     return get_renderer(renderers, **kwargs)
-
-
-def parse_size(value, default=None):
-    """Return size if it is valid, default size if size is empty, or throws exception."""
-    size = text_value(value or default)
-    if size not in SIZES:
-        valid_sizes = ", ".join(SIZES)
-        raise BootstrapError(f'Invalid value "{size}" for parameter "size" (valid values are {valid_sizes}).')
-    return size
-
-
-def get_size_class(size, prefix, *, default=None, skip=None):
-    """Return CSS class for size with given prefix, unless size needs to be skipped."""
-    size = parse_size(size, default=default)
-    if skip and size in list(skip):
-        return ""
-    return f"{prefix}{size}"

src/django_bootstrap5/forms.py

@@ -1,18 +1,11 @@
 from django.forms import EmailInput, NumberInput, PasswordInput, Textarea, TextInput, URLInput
 from django.utils.safestring import mark_safe
 
-from .core import (
-    DEFAULT_SIZE,
-    SIZE_MD,
-    get_bootstrap_setting,
-    get_field_renderer,
-    get_form_renderer,
-    get_formset_renderer,
-    get_size_class,
-)
+from .core import get_bootstrap_setting, get_field_renderer, get_form_renderer, get_formset_renderer
 from .css import merge_css_classes
 from .exceptions import BootstrapError
 from .html import render_tag
+from .size import DEFAULT_SIZE, SIZE_MD, get_size_class
 
 WRAPPER_CLASS = ""
 WRAPPER_TAG = "div"
@@ -75,7 +68,7 @@ def render_button(
 ):
     """Render a button with content."""
     attrs = {}
-    size_class = get_size_class(size, prefix="btn-", skip=SIZE_MD, default=DEFAULT_SIZE)
+    size_class = get_size_class(size, prefix="btn", skip=SIZE_MD, default=DEFAULT_SIZE)
     classes = merge_css_classes("btn", button_class, size_class)
 
     if button_type:

src/django_bootstrap5/renderers.py

@@ -21,10 +21,11 @@
 from django.utils.html import conditional_escape, format_html, strip_tags
 from django.utils.safestring import mark_safe
 
-from .core import DEFAULT_SIZE, SIZE_MD, SIZE_XS, get_bootstrap_setting, get_size_class, parse_size
+from .core import get_bootstrap_setting
 from .css import merge_css_classes
 from .exceptions import BootstrapError
 from .forms import WRAPPER_CLASS, WRAPPER_TAG, is_widget_with_placeholder, render_field, render_form, render_label
+from .size import DEFAULT_SIZE, SIZE_MD, SIZE_XS, get_size_class, parse_size
 from .text import text_value
 from .utils import render_template_file
 

src/django_bootstrap5/size.py

@@ -0,0 +1,30 @@
+from django_bootstrap5.css import merge_css_classes
+from django_bootstrap5.exceptions import BootstrapError
+from django_bootstrap5.text import text_value
+
+SIZE_XS = "xs"
+SIZE_SM = "sm"
+SIZE_MD = "md"
+SIZE_LG = "lg"
+SIZES = [SIZE_SM, SIZE_MD, SIZE_LG]
+DEFAULT_SIZE = SIZE_MD
+
+
+def parse_size(value, default=None):
+    """Return size if it is valid, default size if size is empty, or throws exception."""
+    size = text_value(value or default)
+    if size not in SIZES:
+        valid_sizes = ", ".join(SIZES)
+        raise BootstrapError(f'Invalid value "{size}" for parameter "size" (valid values are {valid_sizes}).')
+    return size
+
+
+def get_size_class(size, prefix, *, default=None, skip=None):
+    """Return CSS class for size with given prefix, unless size needs to be skipped."""
+    size = parse_size(size, default=default)
+    if skip:
+        if isinstance(skip, str):
+            skip = merge_css_classes(skip).split(" ")
+        if size in skip:
+            return ""
+    return f"{prefix}-{size}"