Fixed #99. Form scaffolding will check for real columns

flask_admin/contrib/sqlamodel/form.py

 from wtforms import fields, validators
-from sqlalchemy import Boolean
+from sqlalchemy import Boolean, Column
 
 from flask.ext.admin import form
 from flask.ext.admin.model.form import converts, ModelConverterBase, InlineFormAdmin
@@ -98,6 +98,10 @@ class AdminModelConverter(ModelConverterBase):
                 if column.foreign_keys:
                     return None
 
+                # Only display "real" columns
+                if not isinstance(column, Column):
+                    return None
+
                 unique = False
 
                 if column.primary_key:

flask_admin/tests/sqlamodel/test_basic.py

@@ -317,6 +317,7 @@ def test_form():
     # TODO: form_columns
     # TODO: excluded_form_columns
     # TODO: form_args
+    # TODO: Select columns
     pass
 
 
@@ -342,6 +343,7 @@ def test_relations():
     # TODO: test relations
     pass
 
+
 def test_on_model_change_delete():
     app, db, admin = setup()
     Model1, _ = create_models(db)