我注意到,当我在表格页面中提交条目时,除非重新启动,否则输入的日期将在随后的提交中重复。为什么会这样?我发誓重复的时间相隔几分钟,但提交的时间似乎只是从服务器重新启动开始。我也在使用炼金术
models.py
class Entry(db.Model):
id = db.Column(db.Integer, primary_key=True)
title = db.Column(db.String(200), unique=True, nullable=False)
date_input = db.Column(db.DateTime, nullable=False, default=datetime.now(tz=pytz.timezone('Asia/Manila')))
Entry.date_input timestamp results (copy-pasted from cli)
1. 2020-05-09 00:59:07.269489
2. 2020-05-09 01:08:56.676228
3. 2020-05-09 01:10:44.032547
4. 2020-05-09 01:10:44.032547
5. 2020-05-09 01:10:44.032547
6. 2020-05-09 01:10:44.032547
7. 2020-05-09 01:23:28.636399
8. 2020-05-09 01:23:28.636399
9. 2020-05-09 01:23:28.636399
Actual POST logs (copy-pasted from cli)
1. 127.0.0.1 - - [09/May/2020 01:00:55]
2. 127.0.0.1 - - [09/May/2020 01:09:25]
3. 127.0.0.1 - - [09/May/2020 01:14:49]
4. 127.0.0.1 - - [09/May/2020 01:18:07]
5. 127.0.0.1 - - [09/May/2020 01:21:39]
6. 127.0.0.1 - - [09/May/2020 01:23:46]
7. 127.0.0.1 - - [09/May/2020 01:25:14]
8. 127.0.0.1 - - [09/May/2020 01:25:14]
9. 127.0.0.1 - - [09/May/2020 01:25:56]
Server restarts
-I took the timestamps from the first GET result after running the server.
The initial running itself doesnt have time indicated
1. 127.0.0.1 - - [09/May/2020 00:59:11]
2. 127.0.0.1 - - [09/May/2020 01:09:25]
3. 127.0.0.1 - - [09/May/2020 01:10:50]
4. 127.0.0.1 - - [09/May/2020 01:23:31]
请注意固定默认值和默认函数(在需要时提供值)之间的差异。documentation显示了一个带有
datetime.now
的示例您当前的代码可以重写为:
要修复代码,请用函数替换表达式,例如
default=lambda: datetime.now(tz=...)
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