我在 django 的 simple_history 中使用 diff_against。请参阅 simple_history 文档中的“历史差异”:
https://django-simple-history.readthedocs.io/en/latest/history_diffing.html
我已经完成了所有工作,但它指出:
"diff_against also accepts 2 arguments excluded_fields and included_fields to either explicitly include or exclude fields from being diffed."
我无法弄清楚如何传递这些字段。这是我所拥有的工作(没有任何包含或排除字段):
def historical_changes(qry, id):
changes = []
if qry is not None and id:
last = qry.first()
for all_changes in range(qry.count()):
new_record, old_record = last, last.prev_record
if old_record is not None:
delta = new_record.diff_against(old_record)
changes.append(delta)
last = old_record
return changes
我使用以下方法在详细视图中调用它:
changes = historical_changes(hpn.history.all(), hpn.pk)
这一切都有效。然后我尝试包含“exclude_field”。这些是我尝试过的,但没有一个奏效:
delta = new_record.diff_against(old_record, excluded_fields('geom'))
or
delta = new_record.diff_against(old_record).excluded_fields('geom')
or
delta = new_record.diff_against(old_record.excluded_fields('geom'))
这很简单,但我没有弄清楚。任何帮助都会很棒。谢谢。