fix attrs in outer context

src/django_formify/tailwind/formify_helper.py

@@ -1,5 +1,6 @@
 import copy
 import re
+import warnings
 
 from django.template.base import Template
 from django.template.context import Context
@@ -268,7 +269,7 @@ def render_as_tailwind_field(self, context):
         field = context["field"]
         widget = field.field.widget
 
-        attrs = context.get("attrs", {})
+        attrs = context.get("attrs", None) or {}
         css_class = widget.attrs.get("class", "")
         if "class" not in attrs.keys():
             # if class is not set, then add additional css classes
@@ -295,8 +296,16 @@ def render_as_tailwind_field(self, context):
 
         # TODO
         for attribute_name, attributes in attrs.items():
+            # check type of attributes, if it is not basic type boolen, number, string, ignore it
+            # and print warning
+            if not isinstance(attributes, (bool, int, str)):
+                warnings.warn(
+                    f"Attribute {attribute_name} value is not a basic type. Ignoring it.",
+                    stacklevel=1,
+                )
+                continue
             if attribute_name in widget.attrs:
-                # multiple attribtes are in a single string, e.g.
+                # multiple attributes are in a single string, e.g.
                 # "form-control is-invalid"
                 for attr in attributes.split():
                     if attr not in widget.attrs[attribute_name].split():