grepthat opened a new issue #11513:
URL: https://github.com/apache/airflow/issues/11513
**Apache Airflow version**: v2.0.0.dev0 (latest master)
**Environment**:
- **OS**: Ubuntu 18.04.4 LTS
- **Others**: Python 3.6.9
**What happened**:
Selecting a task in the the **task instance list**
(*http:localhost:8080/taskinstance/list/*) and **performing an Action** on it
(e.g. *Set state to 'failed'*) yields an error.
Error message:
```
Something bad has happened.
Please consider letting us know by creating a bug report using Github.
Python version: 3.6.12
Airflow version: 2.0.0.dev0
Node: emma
-------------------------------------------------------------------------------
Traceback (most recent call last):
File "/home/airflow/.local/lib/python3.6/site-packages/flask/app.py", line
2447, in wsgi_app
response = self.full_dispatch_request()
File "/home/airflow/.local/lib/python3.6/site-packages/flask/app.py", line
1952, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/home/airflow/.local/lib/python3.6/site-packages/flask/app.py", line
1821, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/home/airflow/.local/lib/python3.6/site-packages/flask/_compat.py",
line 39, in reraise
raise value
File "/home/airflow/.local/lib/python3.6/site-packages/flask/app.py", line
1950, in full_dispatch_request
rv = self.dispatch_request()
File "/home/airflow/.local/lib/python3.6/site-packages/flask/app.py", line
1936, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File
"/home/airflow/.local/lib/python3.6/site-packages/flask_appbuilder/views.py",
line 686, in action_post
self.datamodel.get(self._deserialize_pk_if_composite(pk)) for pk in pks
File
"/home/airflow/.local/lib/python3.6/site-packages/flask_appbuilder/views.py",
line 686, in <listcomp>
self.datamodel.get(self._deserialize_pk_if_composite(pk)) for pk in pks
File
"/home/airflow/.local/lib/python3.6/site-packages/flask_appbuilder/models/sqla/interface.py",
line 870, in get
query, _filters, select_columns=select_columns
File
"/home/airflow/.local/lib/python3.6/site-packages/flask_appbuilder/models/sqla/interface.py",
line 324, in apply_all
select_columns,
File
"/home/airflow/.local/lib/python3.6/site-packages/flask_appbuilder/models/sqla/interface.py",
line 272, in _apply_inner_all
query = self.apply_filters(query, inner_filters)
File
"/home/airflow/.local/lib/python3.6/site-packages/flask_appbuilder/models/sqla/interface.py",
line 162, in apply_filters
return filters.apply_all(query)
File
"/home/airflow/.local/lib/python3.6/site-packages/flask_appbuilder/models/filters.py",
line 295, in apply_all
query = flt.apply(query, value)
File
"/home/airflow/.local/lib/python3.6/site-packages/flask_appbuilder/models/sqla/filters.py",
line 137, in apply
query, field = get_field_setup_query(query, self.model, self.column_name)
File
"/home/airflow/.local/lib/python3.6/site-packages/flask_appbuilder/models/sqla/filters.py",
line 40, in get_field_setup_query
if not hasattr(model, column_name):
TypeError: hasattr(): attribute name must be string
```
**How to reproduce it**:
I wanted to take an Action on a task instance of a DAG with
`schedule_interval=None`. I am attaching a minimal DAG file used for
reproducing this error.
<details>
<summary>DAG file</summary>
```
from airflow import DAG
from datetime import timedelta, datetime
from airflow.operators.bash_operator import BashOperator
dag = DAG(
'simple_dag',
default_args= {
'owner': 'airflow',
'depends_on_past': False,
'retries' : 0,
'start_date': datetime(1970, 1, 1),
'retry_delay': timedelta(seconds=30),
},
description='',
schedule_interval=None,
catchup=False,
)
t1 = BashOperator(
task_id='task1',
bash_command='echo 1',
dag=dag
)
```
</details>
**Anything else we need to know**:
Taking the same Action on the DagRun list
*(http://localhost:8080/dagrun/list)* works.
Great project btw 🙌. Really enjoying using it.
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