Add javascript_exclude to view Meta.

Author: adamghill

django_unicorn/components.py

@@ -2,7 +2,7 @@
 import inspect
 import logging
 import pickle
-from typing import Any, Callable, Dict, List, Optional, Type, Union
+from typing import Any, Callable, Dict, List, Optional, Sequence, Type, Union
 
 from django.core.exceptions import ImproperlyConfigured
 from django.db.models import Model
@@ -471,6 +471,13 @@ def get_frontend_context_variables(self) -> str:
         attributes = self._attributes()
         frontend_context_variables.update(attributes)
 
+        # Remove any field in `javascript_exclude` from the `frontend_context_variables`
+        if hasattr(self, "Meta") and hasattr(self.Meta, "javascript_exclude"):
+            if isinstance(self.Meta.javascript_exclude, Sequence):
+                for field_name in self.Meta.javascript_exclude:
+                    if field_name in frontend_context_variables:
+                        del frontend_context_variables[field_name]
+
         # Add cleaned values to `frontend_content_variables` based on the widget in form's fields
         form = self._get_form(attributes)
 
@@ -746,7 +753,8 @@ def _is_public(self, name: str) -> bool:
         excludes = []
 
         if hasattr(self, "Meta") and hasattr(self.Meta, "exclude"):
-            excludes = self.Meta.exclude
+            if isinstance(self.Meta.exclude, Sequence):
+                excludes = self.Meta.exclude
 
         return not (
             name.startswith("_")

tests/components/test_component.py

@@ -101,3 +101,27 @@ def test_is_public_protected(component):
 
 def test_is_public_http_method_names(component):
     assert component._is_public("http_method_names") == False
+
+
+def test_meta_javascript_exclude():
+    class TestComponent(UnicornView):
+        name = "World"
+
+        class Meta:
+            javascript_exclude = ("name",)
+
+    component = TestComponent(component_id="asdf1234", component_name="hello-world")
+    assert "name" not in component.get_frontend_context_variables()
+    assert "name" in component.get_context_data()
+
+
+def test_meta_exclude():
+    class TestComponent(UnicornView):
+        name = "World"
+
+        class Meta:
+            exclude = ("name",)
+
+    component = TestComponent(component_id="asdf1234", component_name="hello-world")
+    assert "name" not in component.get_frontend_context_variables()
+    assert "name" not in component.get_context_data()