问题
This question is similar to this one but distinctly different, in my opinion.
I have an object that has some datetime attributes. In order to serialize it and store as a JSON string, I call the .isoformat method (using a custom JSON encoder).
The other way around, I expected Django template tags to be able to resolve this for me. I have a JSON object that I convert to a dictionary by calling json.loads. The resulting attribute has the value 2015-10-07T14:57:00.501597+00:00 when I simply call it as {{ my_object.date }}. When I pass it to the date template tag, however, I get no output at all. I'm trying {{ my_object.date | date }} but also things like {{ my_object.date | date:'Y-m-d' }}.
Is date not able to convert these values? I distinctly remember doing this at some point, but am not sure on the specifics..
Is there a way to debug this properly? Right now I'm just not seeing any output, and nothing appears in the logs either.
回答1:
Why not convert it to a datetime instance before passing it to the template? Then you could use the date filter in the template to output whatever you want. If you don't/can't do that, you'll have to write a custom filter tag to read the isoformat date and output it how you want to.
Example using dateutil library:
from django import template
import dateutil
register = template.Library()
@register.filter(name='to_date')
def to_date(value):
return dateutil.parser.parse(value)
Docs for custom filter tags.
来源：https://stackoverflow.com/questions/33187986/django-templatetags-iso-to-date