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 render_tag(tag, attrs=None, content=None, close=True):
"""Render a HTML tag."""
attrs_string = flatatt(attrs) if attrs else ""
builder = "<{tag}" + attrs_string + ">{content}"
content_string = text_value(content)
if content_string or close:
builder += "</{tag}>"
return format_html(builder, tag=tag, content=content_string)
def test_text_value(self):
self.assertEqual(text_value(""), "")
self.assertEqual(text_value(" "), " ")
self.assertEqual(text_value(None), "")
self.assertEqual(text_value(1), "1")
def merge_css_classes(*args):
"""Return single string with CSS classes."""
css_classes = []
for arg in args:
css_classes += text_value(arg).split(" ")
return _css_class_list_string(css_classes)
def merge_css_classes(*args):
"""Merge CSS classes into one string."""
css_classes = []
for arg in args:
css_classes += text_value(arg).split(" ")
return _css_class_list_string(css_classes)