I'm sorry Dev, but that is really bad practice. You are doing in python what can be done by the database. That type of code would create a memory error and be very slow to run. It's much better to get the last item from the database. In your example it would just be: last_action = ActionGame.objects.last()
Den tis 28 feb. 2023 kl 15:04 skrev Dev Femi Badmus <[email protected] >: > all_action=ActionGame.objects.all() > my_action = [] > for action in all_action: > my_action.append(action) > last_action = my_action[-1] > > > On Tue, Feb 28, 2023 at 1:05 PM Andréas Kühne <[email protected]> > wrote: > >> Se comments below. >> >> >> Den fre 24 feb. 2023 kl 12:14 skrev Byansi Samuel < >> [email protected]>: >> >>> Hey everyone, l got a problem. Am trying to retrieve a single latest >>> object added everytime, and display it in the template. >>> Below is my codes but; >>> >>> Help me figure it out the source of the problem in these different >>> instances below 👇 >>> >>> _______________________ issue number 1_______ >>> >>> #Action/models.py >>> class ActionGame(models.Model): >>> name=models.Charfield() >>> published=models.DateTimeField() >>> >>> #Action/views.py >>> from Action.models import ActionGame >>> >>> def action (request): >>> latest_action=ActionGame.objects.filter(published=published). >>> latest() >>> Context={ 'latest_action': latest_action } >>> return.... >>> >>> But it returns *error* : >>> name 'published' is not defined >>> >> >> You haven't defined what the value of published is. If you want to get >> the last created one the query should be: >> latest_action=ActionGame.objects.latest("published") - that would give >> you the last published item. Another way would be: >> latest_action=ActionGame.objects.order_by("published").last() >> >> >>> ____________________ issue number 2________ >>> >>> #Action/models.py >>> class ActionGame(models.Model): >>> name=models.Charfield() >>> published=models.DateTimeField() >>> class Meta: >>> get_latest_by='published' >>> >>> #Action/views.py >>> ........ >>> latest_action=ActionGame.objects. latest() >>> ....... >>> >>> #but it returns *error* : >>> 'ActionGame' object is not iterable >>> >>> Even if I try this: >>> ............ >>> latest_action=ActionGame.objects. latest('published') >>> ....... >>> >>> #it returns the Same error: >>> 'ActionGame' object is not iterable >>> >>> But this second issue, the error is referred in #action.html >>> >>> {% for x in latest _action %} >>> <p>{{ x.game_name }}</p> >>> {% endfor %} >>> >>> >> So the latest_action variable that you have sent to the template is an >> instance of ActionGame - and not a list or anything. You can only access >> variables in the ActionGame class. For example: >> >> <p>{{ lastest_action.name }}</p> >> >> would print out the value of the name of the ActionGame instance. >> >> Please l need your assistance. >>> >>> I'm Samuel, >>> Thanks >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Django users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/django-users/CAGQoQ3wMUno6hLAO-1FtN0Nn7VtkCn4qf-O4U%3DpeJ4JzY%2B%3DcAQ%40mail.gmail.com >>> <https://groups.google.com/d/msgid/django-users/CAGQoQ3wMUno6hLAO-1FtN0Nn7VtkCn4qf-O4U%3DpeJ4JzY%2B%3DcAQ%40mail.gmail.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- >> You received this message because you are subscribed to the Google Groups >> "Django users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/django-users/CAK4qSCeBCST7o-5WZx%2BmhGO2yH-Msdse%3DKusk9UOyW8XZBXRBw%40mail.gmail.com >> <https://groups.google.com/d/msgid/django-users/CAK4qSCeBCST7o-5WZx%2BmhGO2yH-Msdse%3DKusk9UOyW8XZBXRBw%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/CAD9bWYwtxjinYmeNWZvBdCdQB5zAa3je1bwMjUhmzEjzF0Q_bg%40mail.gmail.com > <https://groups.google.com/d/msgid/django-users/CAD9bWYwtxjinYmeNWZvBdCdQB5zAa3je1bwMjUhmzEjzF0Q_bg%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAK4qSCcNoEZ18G5NTmOGqnPRfrEAGChinvPdLVJYDsF1%2BEQyuA%40mail.gmail.com.
