为什么 django-viewflow 内部表 'viewflow_task_previous' 倒退？答案

【问题标题】：Why django-viewflow internal table 'viewflow_task_previous' goes backwards?为什么 django-viewflow 内部表 'viewflow_task_previous' 倒退？
【发布时间】：2021-10-10 22:14:27
【问题描述】：

鉴于定义了以下步骤

当我深入研究内部表，尤其是viewflow_task_previous 表时，似乎from 和to 是相反的？

pmas=> select * from viewflow_task_previous where from_task_id = 10248;
  id  | from_task_id | to_task_id 
------+--------------+------------
 9099 |        10248 |      10247
(1 row)

pmas=> select id, status, flow_task, status from viewflow_task where id = 10248;
  id   |  status  |                                flow_task                                |  status  
-------+----------+-------------------------------------------------------------------------+----------
 10248 | ASSIGNED | connect_it/flows.new_circuit.flow.NewCircuit.external_task_installation | ASSIGNED
(1 row)

pmas=> select id, status, flow_task, status from viewflow_task where id = 10247;
  id   | status |                                flow_task                                | status 
-------+--------+-------------------------------------------------------------------------+--------
 10247 | DONE   | connect_it/flows.new_circuit.flow.NewCircuit.external_task_provisioning | DONE
(1 row)

有人能解释一下为什么以及如何工作吗？

【问题讨论】：

标签： django-viewflow viewflow

【解决方案1】：

由models.ManyToManyField previousTask模型的字段创建的viewflow_task_previous表

https://github.com/viewflow/viewflow/blob/master/viewflow/models.py#L97

是的，这在 SQL 级别上造成了一些混乱

【讨论】：