I'm trying to display the difference between 2 giving dates on django, and i've managed to make it, but now i'm strugling to display only the days, without the time, is there any filter that i can use?

My html template:

<a href="{% url 'edit_contract' contract.id %}">
    {% if contract.status == 'PN'  %}
        {{ today |sub:contract.starting_date  }}
    {% else %}
        TODO
    {% endif %}
</a>

My view:

@login_required
def contract_list(request):
    contracts = Contract.objects.filter(user=request.user)
    total_contracts_value = Contract.objects.filter(user=request.user).aggregate(sum=Sum('value'))['sum'] or 0
    contracts_count = Contract.objects.filter(user=request.user).count()
    today = date.today()
    return render(request, 'list_contract.html', {'contracts': contracts,
                                                       'total_contracts_value': total_contracts_value,
                                                       'contracts_count': contracts_count, 'today':today})

My output:

CodePudding user response：

I think there are a few ways to do what you want here. I'll let you decide what you think works best for you.

1. The timesince or timeuntil template formatting tags within Django may give you what you want immediately.

{{ today |timeuntil:contract.starting_date }}

https://docs.djangoproject.com/en/4.0/ref/templates/builtins/#timesince https://docs.djangoproject.com/en/4.0/ref/templates/builtins/#timeuntil

2. Another option is to make use of the datetime module.

Here us an example showing the difference in days between a datetime object:

import datetime
now = datetime.datetime.now()
startingDate = now   datetime.timedelta(days=7)
daysRemaining = (startingDate-now).days
print(daysRemaining) # INFO: prints '7'

I don't think this is what you want, but here is another example, using strftime and timedelta to get more specific formatting:

todaysDateFormatted = datetime.datetime.strftime(datetime.datetime.now()   datetime.timedelta(days=1), "%d-%b-%Y")

CodePudding user response：

Days since start is a property of your contract, so you could create an actual property in the Contract model

from datetime import date
from django.db import models

class Contract(models.Model):
    ...
    @property
    def days_since_start(self):
        today = date.today()
        result = today - self.start_date
        return result.days

then refer to the property in your template

    {% if contract.status == 'PN'  %}
            {{ contract.days_since_start }}
    {% else %}