python - Datetime object won't work with weekday() -

class event(models.model):     day = models.datefield(blank=true, null=true)     period = models.integerfield(choices=period_choices)     cart = models.charfield(choices=cart_choice, max_length=4)     is_reserved = models.booleanfield(default=false)     teacher = models.foreignkey(user, blank=true, null=true)  class reservationform(modelform):     class meta:         model = event         fields = ('day', 'teacher', 'is_reserved', 'period', 'cart')         widgets = {'teacher': forms.hiddeninput(), 'is_reserved': forms.hiddeninput(), 'period': forms.hiddeninput(),                    'cart': forms.hiddeninput(), 'day': forms.hiddeninput()} 

i want day of week in order sort events. should able using django's date filter - {% field.initial.day|day:"w" %} - doesn't return anything.

so wrote template tag:

@register.filter def the_day(value):     return value.date().weekday()  home.html {{ form.initial.day|the_day }} 

nope: 'str' object has no attribute 'date'

alright, let's use dateparse

@register.filter def the_day(value):     answer = parse_date(value)     return answer.weekday() 

nope: exception type: typeerror @ / exception value: expected string or bytes-like object

any ideas look?

you can directly use django's inbuilt date

edit:

i guessing need week day in number,

{{ form.initial.day|date:"w" }} 

or if want weekday name template tag

{{ form.initial.day|date:"d" }}