Display timestamp in django template

问题

I need to display timestamp of a post with in django template. The timestamp would be like:

"timestamp":1337453263939 in milli seconds

I can convert the timestamp into datetime object and render it in the view. Is there is any direct way to display through the template? The output should be:

print(datetime.datetime.fromtimestamp(1337453263.939))
2012-05-20 00:17:43.939000

回答1:

You could use custom template filters (see https://docs.djangoproject.com/en/dev/howto/custom-template-tags/). In your case it could like this:

Create directory 'templatetags' in application with view, that renders template.

Put into this dir blank file "__init__.py" and "timetags.py" with code:

from django import template
import datetime
register = template.Library()

def print_timestamp(timestamp):
    try:
        #assume, that timestamp is given in seconds with decimal point
        ts = float(timestamp)
    except ValueError:
        return None
    return datetime.datetime.fromtimestamp(ts)

register.filter(print_timestamp)

In your template, add
```
{% load timetags %}
```
Use following syntax in template:
```
{{ timestamp|print_timestamp }}
```
Where timestamp = 1337453263.939 from your example

This will print timestamp in local date and time format. If you want to customize output, you can modify print_timestamp in following way:

import time
def print_timestamp(timestamp):
    ...
    #specify format here
    return time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime(ts))

回答2:

{% now "U" %}

The "U" is a date format for Unix epoch, and can also be used with built-in date filter. So, if you have the date in a variable:

{{ value|date:"U" }}

回答3:

Maybe you can use the date filter: https://docs.djangoproject.com/en/dev/ref/templates/builtins/?from=olddocs#date

回答4:

I don't think the date filter takes timestamps, so unless I'm overseeing a filter, you could simply create one?

# python
from datetime import datetime

# django
from django import template


register = template.Library()

@register.filter("timestamp")
def timestamp(value):
    try:
        return datetime.fromtimestamp(value)
    except AttributeError, e:
        catch errors..

回答5:

Just write a custom filter that converts your timestamp string to a datetime object. Then you can either further process it into something readable (a string representing your time) and return it to your template or just return a python datetime object and use django's date filter.

So you could have something like this {{ timestamp_string|convert_to_datetime|date:'D d M Y' }}

More on this subject at: https://docs.djangoproject.com/en/dev/howto/custom-template-tags/

来源：https://stackoverflow.com/questions/10715253/display-timestamp-in-django-template

标签

django

templates

date

timestamp