Disregard non-editable fields while saving model

tornadmin/backends/base.py

@@ -30,6 +30,23 @@ def get_form(self, request_handler):
     async def save_model(self, request_handler, form, obj=None):
         raise NotImplementedError('Implement in subclass')
 
+    def field_is_editable(self, field):
+        """Returns True if this field is editable. Else, returns False.
+
+        This method is a shorthand for checking the ``fields``,
+        ``exclude`` and ``readonly_fields`` lists.
+        """
+        if field in self.exclude:
+            return False
+
+        if field in self.readonly_fields:
+            return False
+
+        if self.fields and field in self.fields:
+            return False
+
+        return True
+
     def get_absolute_url(self, request_handler, obj):
         return None
 

tornadmin/handlers.py

@@ -294,6 +294,8 @@ async def post(self, app_slug, model_slug,):
         data = MultiDict()
 
         for field_name in form_class._fields:
+            if not admin.field_is_editable(field_name):
+                continue
             value = self.get_body_arguments(field_name, None)
             if value:
                 data.extend(list(zip([field_name] * len(value), value)))
@@ -345,6 +347,8 @@ async def post(self, app_slug, model_slug, id):
         data = MultiDict()
 
         for field_name in form_class._fields:
+            if not admin.field_is_editable(field_name):
+                continue
             value = self.get_body_arguments(field_name, None)
             if value:
                 data.extend(list(zip([field_name] * len(value), value)))