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当我在过滤器中使用小时(H)时，如：
<p>{{ entry.date_added|date:'Y-m-d H:i ' }}</p>
会报如下错误：
The format for date objects may not contain time-related format specifiers (found 'H').
去掉 H:i 后，错误消失
<p>{{ entry.date_added|date:'Y-m-d H:i ' }}</p>
会报如下错误：
The format for date objects may not contain time-related format specifiers (found 'H').
去掉 H:i 后，错误消失
 | 1 matrix1010 2018-07-21 22:55:54 +08:00 via Android 因为是 Date, 只有年月日, 没有小时 |
 | 2 chengxiao 2018-07-21 23:15:51 +08:00 看看 model 里定义的时间类型错了 |
 | 3 Zzdex 2018-07-21 23:35:28 +08:00 看看你的 `date_added`是`DatetimeField` 还是 `Datefield` |
 | 4 inoki 2018-07-22 17:59:18 +08:00 via Android 见#3 models.DatetimeField <=> models.DateField |
 | 5 getlost OP @matrix1010 @chengxiao 谢谢各位老哥 |
| 6 getlost OP @Zzdex @inoki 两位老哥思路是对的，但是我将 models.DateField 改为 models.DateTimeField 出现了新的错误，下面是报错 Internal Server Error: /topics/1/ Traceback (most recent call last): File "d:\t_django\ll_env\lib\site-packages\django\core\handlers\exception.py", line 35, in inner respOnse= get_response(request) File "d:\t_django\ll_env\lib\site-packages\django\core\handlers\base.py", line 128, in _get_response respOnse= self.process_exception_by_middleware(e, request) File "d:\t_django\ll_env\lib\site-packages\django\core\handlers\base.py", line 126, in _get_response respOnse= wrapped_callback(request, *callback_args, **callback_kwargs) File "d:\t_django\t_djangos\views.py", line 20, in topic topic = Topic.objects.get(id=topic_id) File "d:\t_django\ll_env\lib\site-packages\django\db\models\manager.py", line 82, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "d:\t_django\ll_env\lib\site-packages\django\db\models\query.py", line 397, in get num = len(clone) File "d:\t_django\ll_env\lib\site-packages\django\db\models\query.py", line 254, in __len__ self._fetch_all() File "d:\t_django\ll_env\lib\site-packages\django\db\models\query.py", line 1179, in _fetch_all self._result_cache = list(self._iterable_class(self)) File "d:\t_django\ll_env\lib\site-packages\django\db\models\query.py", line 62, in __iter__ for row in compiler.results_iter(results): File "d:\t_django\ll_env\lib\site-packages\django\db\models\sql\compiler.py", line 1011, in apply_converters value = converter(value, expression, connection) File "d:\t_django\ll_env\lib\site-packages\django\db\backends\sqlite3\operations.py", line 222, in convert_datetimefield_value value = parse_datetime(value) File "d:\t_django\ll_env\lib\site-packages\django\utils\dateparse.py", line 107, in parse_datetime match = datetime_re.match(value) TypeError: expected string or bytes-like object [22/Jul/2018 22:33:12] "GET /topics/1/ HTTP/1.1" 500 101852 Internal Server Error: /topics/1/ Traceback (most recent call last): File "d:\t_django\ll_env\lib\site-packages\django\core\handlers\exception.py", line 35, in inner respOnse= get_response(request) File "d:\t_django\ll_env\lib\site-packages\django\core\handlers\base.py", line 128, in _get_response respOnse= self.process_exception_by_middleware(e, request) File "d:\t_django\ll_env\lib\site-packages\django\core\handlers\base.py", line 126, in _get_response respOnse= wrapped_callback(request, *callback_args, **callback_kwargs) File "d:\t_django\t_djangos\views.py", line 20, in topic topic = Topic.objects.get(id=topic_id) File "d:\t_django\ll_env\lib\site-packages\django\db\models\manager.py", line 82, in manager_method return getattr(self.get_queryset(), name)(*args, **kwargs) File "d:\t_django\ll_env\lib\site-packages\django\db\models\query.py", line 397, in get num = len(clone) File "d:\t_django\ll_env\lib\site-packages\django\db\models\query.py", line 254, in __len__ self._fetch_all() File "d:\t_django\ll_env\lib\site-packages\django\db\models\query.py", line 1179, in _fetch_all self._result_cache = list(self._iterable_class(self)) File "d:\t_django\ll_env\lib\site-packages\django\db\models\query.py", line 62, in __iter__ for row in compiler.results_iter(results): File "d:\t_django\ll_env\lib\site-packages\django\db\models\sql\compiler.py", line 1011, in apply_converters value = converter(value, expression, connection) File "d:\t_django\ll_env\lib\site-packages\django\db\backends\sqlite3\operations.py", line 222, in convert_datetimefield_value value = parse_datetime(value) File "d:\t_django\ll_env\lib\site-packages\django\utils\dateparse.py", line 107, in parse_datetime match = datetime_re.match(value) TypeError: expected string or bytes-like object |
| 8 getlost OP @Zzdex @inoki 是我搞错了,没有迁移数据，但是还是有问题 ----------------------------HTML--------------------------- {% extends "t_djangos/base.html" %} {% block content %} <p>Topics：{{ topic }}</p> <p>Entries:</p> <ul> {% for entry in entries %} <li> <p>{{ entry.date_added|date:'M d, Y' H:i }}</p> <p>{{ entry.text|linebreaks }}</p> </li> {% empty %} <li> There are no entriesfor this topic yet. </li> {% endfor %} </ul> {% endblock content %} ----------------------------HTML--------------------------- <p>{{ entry.date_added|date:'M d, Y' H:i }}</p> 这一行并不在网页上显示出来 <p>{{ entry.text|linebreaks }}</p> 这个却会 |
| 9 inoki 2018-07-23 04:56:03 +08:00 via Android |
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