I am making a retweet function and it works quite smooth but I am not able to retweet my own tweets , I am able to retweet other users tweets but not mine
. It shows that matching query doesn't exist.
Here is the tweets models
class TweetManager(models.Manager):
def retweet(self,user,parent_obj):
if parent_obj.parent:
obj_parent = parent_obj.parent
else:
obj_parent = parent_obj
qs = self.get_queryset().filter(user = user, parent = obj_parent)
if qs.exists():
return None
obj = self.model(
user = user,
parent = obj_parent,
content = parent_obj.content
)
obj.save()
return obj
class Tweet(models.Model):
parent = models.ForeignKey("self",blank = True,null = True)
user = models.ForeignKey(settings.AUTH_USER_MODEL)
content = models.CharField(max_length = 130)
time = models.DateTimeField(auto_now_add = True)
objects = TweetManager()
def __str__(self):
return self.content
class Meta:
ordering = ['content']
Here's the views.py
class Retweet(View):
def get(self, request, pk, *args, **kwargs):
tweet = get_object_or_404(Tweet, pk=pk)
if request.user.is_authenticated:
new_tweet = Tweet.objects.retweet(request.user, tweet)
return HttpResponseRedirect("/")
return HttpResponseRedirect(tweet.get_absolute_url())
Related
Can you please tell me how to transfer the calendar to the form with a get request, with clicking on the days of the week and transferring to the form? There is a filtering for all fields at the same time now, only with the date of trouble (
Approximately how such a calendar can be transmitted? Thanks in advance.
class Traveller(models.Model):
title = models.CharField(max_length=30,default='',null=False)
origin = models.ForeignKey(Origin,on_delete=models.CASCADE,max_length=100,verbose_name= 'Источник',default='')
destination = models.ForeignKey(Destination,on_delete=models.CASCADE, verbose_name="Местонахождение",default='')
transport = models.ForeignKey(Transport,on_delete=models.CASCADE, verbose_name="Транспорт",default='')
passengers = models.ForeignKey(Passengers,on_delete=models.CASCADE, verbose_name="Пассажиры",default='')
url = models.SlugField(max_length=130, unique=True)
def __str__(self):
return self.title
class Meta:
verbose_name = 'Путешествие'
verbose_name_plural = 'Путешествие'
def get_absolute_url(self):
return reverse("traveller", kwargs={"url": self.url})
`views:
class FullTraveller:
def get_origin(self):
return Origin.objects.all()
def get_destination(self):
return Destination.objects.all()
def get_transport(self):
return Transport.objects.all()
def get_passengers(self):
return Passengers.objects.all()
class TravellerView(FullTraveller, ListView):
template_name = 'index.html'
model = Traveller
queryset = Traveller.objects.all()
paginate_by = 1
class FilterTravelView(FullTraveller,ListView):
def get_queryset(self):
if self.request.GET.getlist("origin") and self.request.GET.getlist("destination") and self.request.GET.getlist(
"transport") and self.request.GET.getlist("destination"):
queryset = Traveller.objects.filter(origin__in=self.request.GET.getlist("origin"),
destination__in=self.request.GET.getlist("destination"),
transport__in=self.request.GET.getlist("transport"),
passengers__in=self.request.GET.getlist("passengers"))
else:
queryset = Traveller.objects.filter(Q(origin__in=self.request.GET.getlist("origin")) | Q(
destination__in=self.request.GET.getlist("destination")) | Q(
transport__in=self.request.GET.getlist("transport"))| Q(
passengers__in=self.request.GET.getlist("passengers")))
return queryset
def get_context_data(self, *args, **kwargs):
context = super().get_context_data(*args, **kwargs)
context["origin"] = ''.join([f"origin={x}&" for x in self.request.GET.getlist("origin")])
context["destination"] = ''.join([f"destination={x}&" for x in self.request.GET.getlist("destination")])
context["transport"] = ''.join([f"transport={x}&" for x in self.request.GET.getlist("transport")])
context["passengers"] = ''.join([f"passengers={x}&" for x in self.request.GET.getlist("passengers")])
return context
forrm in template
`
```
```
I tried various options with widgets, but it didn’t work to insert them into the template
So i've been stack on this problem that everytime I update my stock in orders it called twice for updating I use the class base view built in Django but in models I have a post signal which it removing the stock of the product. I already use the dispatch_uid but it's not working or any solution that I found on internet not working on my problem.
here is my class base view for updating:
class ItemQtyUpdateClassBaseView(UpdateView):
template_name = 'components/update/item.html'
form_class = ItemForm
def get_context_data(self, **kwargs):
kwargs['context_title'] = 'Update Order Qty'
return super(ItemQtyUpdateClassBaseView, self).get_context_data(**kwargs)
def form_valid(self, form):
try:
order_item = OrderModel.objects.get(pk = self.kwargs[self.pk_url_kwarg])
fetch_product = ProductsModel.objects.get(product_name = order_item.product_name)
print(fetch_product.qty)
if fetch_product.dough != None:
if int(fetch_product.dough.qty) <= 0:
messages.error(self.request, 'Not enough qty to order.')
return self.form_invalid(form)
if int(fetch_product.qty) <= 0:
messages.error(self.request, 'Not enough qty to order.')
return self.form_invalid(form)
else:
self.object = form.save()
messages.success(self.request, 'Successfully update qty.')
except Exception as e:
messages.error(self.request, e)
return self.form_invalid(form)
return super(ItemQtyUpdateClassBaseView, self).form_valid(form)
def form_invalid(self, form):
return super().form_invalid(form)
def get_queryset(self):
return OrderModel.objects.filter(pk = self.kwargs[self.pk_url_kwarg])
def get_success_url(self):
return reverse_lazy('core:createorder', kwargs = {
'typeoforder': self.kwargs['typeoforder']
})
and here is my model with signal post_save:
class OrderModel(models.Model):
date = models.DateField(auto_now = True)
invoice_no = models.ForeignKey(InvoiceModel, on_delete = models.CASCADE)
product_name = models.CharField(max_length = 150, blank = False, null = True)
price = models.DecimalField(max_digits = 10, decimal_places = 2)
qty = models.FloatField(default = 1)
class Meta:
db_table = 'orders'
ordering = ['-pk']
#receiver(post_save, sender = OrderModel, dispatch_uid='signals.ordermodel_removeqty')
def removeQty(sender, instance = None, created = False, **kwargs):
product = ProductsModel.objects.get(product_name = instance.product_name)
if product.dough != None:
dough = DoughModel.objects.get(pk = product.dough.pk)
dough.qty = abs(dough.qty - (product.qty * instance.qty))
dough.save()
else:
product.qty = abs(product.qty - instance.qty)
product.save()
You are calling save() method two times in form_valid() method :
self.object = form.save()
super(ItemQtyUpdateClassBaseView, self).form_valid(form)
You have to remove the below line from form_valid() method:
self.object = form.save()
See what form_valid(form)(Django Docs) method do:
Saves the form instance, sets the current object for the view, and
redirects to get_success_url().
How can you update certain model fields when a form is posted using Django's UpdateView?
When the user checks complete = True on the form, and submits it, I want their name and date to be saved to this record (fields not visible on the form). The code below isn't throwing any errors, but it also isn't updating the fields requested.
Is it potentially because the view is already updating this record with the form, so they conflict?
view:
class maintenanceEdit(LoginRequiredMixin,UpdateView,):
model = Maintenance
form_class = EditMaintenance
template_name = 'maintenance_edit.html'
login_url = 'login'
success_url = reverse_lazy('equipmentdashboard')
def form_valid(self, form,):
instance = form.save(commit=False)
instance.user = self.request.user
user = instance.user.first_name +" "+instance.user.last_name
completed = form.instance.completed
dateCompleted = form.instance.dateCompleted
if (dateCompleted is None):
if completed == True:
updateMaintenance = Maintenance.objects.get(id = instance.id)
updateMaintenance.dateCompleted = timezone.now()
updateMaintenance.completedBy = user
updateMaintenance.save(update_fields=['dateCompleted','completedBy',])
return super(maintenanceEdit, self).form_valid(form)
model:
class Maintenance(models.Model):
device = models.ForeignKey(get_user_model(),on_delete=models.CASCADE,)
customerTag = models.CharField(max_length=50,)
maintenanceItem = models.CharField(max_length=35,blank=True,)
maintenanceDescrip = models.TextField(max_length=300,blank=True,)
maintenanceNotes = models.TextField(max_length=300,blank=True,)
dateCreated = models.DateTimeField(auto_now_add=True,)
dateDue = models.DateTimeField(auto_now=False, auto_now_add=False, null=True, blank=True, editable=True)
dateCompleted = models.DateTimeField(auto_now=False, auto_now_add=False, null=True, blank=True, editable=True)
completed = models.BooleanField(default = False)
createdBy = models.CharField(max_length=35,blank=True,)
completedBy = models.CharField(max_length=35,blank=True,)
form:
class EditMaintenance(forms.ModelForm):
def __init__(self, *args, **kwargs):
super(EditMaintenance, self).__init__(*args, **kwargs)
self.fields['maintenanceItem'].required = True
self.fields['dateDue'].required = True
class Meta:
model = Maintenance
fields = ['maintenanceItem','dateDue','maintenanceDescrip',
'maintenanceNotes','completed',]
labels = {
'maintenanceItem': ('Maintenance Item'),
'dateDue': ('Maintenance Due'),
'maintenanceDescrip': ('Maintenance Description'),
'maintenanceNotes': ('Maintenance Notes'),
'completed': ('Complete Maintenance'),
}
I also tried, in my view:
def form_valid(self, form,):
instance = form.save(commit=False)
instance.user = self.request.user
user = instance.user.first_name +" "+instance.user.last_name
completed = form.instance.completed
dateCompleted = form.instance.dateCompleted
if (dateCompleted is None):
if completed == True:
Maintenance.objects.filter(id = instance.id).update(dateCompleted = timezone.now(),completedBy = user)
return super(maintenanceEdit, self).form_valid(form)
I'm unable to figure out how to only call a queryset of items that belong to a specific User in the django forms.
dropoffs/models.py
class DropoffItem(models.Model):
user = models.ForeignKey(settings.AUTH_USER_MODEL, null=True)
dropoff = models.ForeignKey('Dropoff', null=True, blank=True)
product = models.ForeignKey(Product)
location = models.CharField(max_length=120, choices=LOCATION_CHOICES, default="Customer")
def __str__(self):
return str('%s' + " " + "(" + '%s' + ")") %(self.product.title, self.product.sku)
def sku(self):
return self.product.sku
def title(self):
return self.product.title
def dropoff_id(self):
return str(self.dropoff.id)
forms.py
class AddPickupItemForm(forms.ModelForm):
dropoffitem = forms.ModelChoiceField(queryset=DropoffItem.objects.none())
class Meta:
model = PickupItem
# fields = ["product", "quantity"]
fields = ['dropoffitem']
def __init__(self, user, *args, **kwargs):
# self.request = kwargs.pop("request")
the_user = kwargs.pop('user', None)
super(AddPickupItemForm, self).__init__(*args, **kwargs)
if the_user is not None:
self.fields["dropoffitem"].queryset = DropoffItem.objects.filter(user=the_user)
views.py
def add_item_to_pickup_order(request):
request.session.set_expiry(120000)
try:
user = request.user
the_id = request.session['pickup_id']
pickup = Pickup.objects.get(id=the_id)
except:
user = request.user
new_pickup_order = Pickup(user=user)
new_pickup_order.save()
request.session['pickup_id'] = new_pickup_order.id
the_id = new_pickup_order.id
pickup = Pickup.objects.get(id=the_id)
try:
dropoffitem = DropoffItem.objects.filter(user=user)
except DropoffItem.DoesNotExist:
pass
except:
pass
form = AddPickupItemForm(request.POST, user=request.user)
if request.method == "POST":
dropoffitem_id = int(request.POST['dropoffitem'])
pickup_item = PickupItem.objects.create(pickup=pickup, dropoffitem_id=dropoffitem_id)
pickup_item.save()
return HttpResponseRedirect('%s'%(reverse('add_item_to_pickup_order')))
context = {
"pickup": pickup,
"form": form,
}
return render(request, 'pickups/create_pickup_order.html', context)
With the modifications to init, I'm getting a TypeError of: init() got multiple values for keyword argument 'user'.
Could that be because of how I'm requesting a 'session'?
class AddPickupItemForm(ModelForm):
def __init__(self,*args,**kwargs)
the_user = kwargs.pop('user',None)
super(AddPickupItemForm, self).__init__(*args,**kwargs)
if the_user is not None:
self.fields['dropoffitem'].queryset = DropOffItem.objects.filter(user=the_user)
In other words, pass your user to the form when instantiating, if you need to.
Here is models.py:
class User(TimeStampedModel):
id = models.AutoField(primary_key=True)
class Shoe(models.Model):
size = models.IntegerField(help_text="The shoe\'s size", choices=sizeChoices)
user = models.ForeignKey('User', related_name='shoes')
brand = models.ForeignKey('Brand', related_name='shoes')
class Brand(models.Model):
name = models.CharField(max_length=64, choices = brandChoices)
class ShoeForm(ModelForm):
def __init__(self, *args, **kwargs):
super(ShoeForm, self).__init__(*args, **kwargs)
self.fields['brand'].required = True
self.fields['size'].required = True
class Meta:
model = Shoe
fields = ['brand', 'size']
exclude = ['user']
views.py:
def index(request):
ShoeFormSet = modelformset_factory(Shoe, form=ShoeForm, extra=3)
NewShoeFormSet = modelformset_factory(Shoe, form=NewShoeForm)
if request.method == 'POST':
shoe_formset = ShoeFormSet(request.POST, request.FILES, prefix='shoes')
new_shoe_formset = NewShoeFormSet(request.POST, request.FILES, prefix='new_shoes')
if shoe_formset.is_valid() and new_shoe_formset.is_valid():
#do something with the cleaned data
else:
shoe_formset = ShoeFormSet(prefix='shoes')
new_shoe_formset = NewShoeFormSet(prefix='new_shoes')
return render(request, 'shoes/input_shoes.html', {
'shoe_formset': shoe_formset,
'new_shoe_formset': new_shoe_formset,
})
But I get this error: DatabaseError: no such column: shoes_shoe.user_id, which occurs on the line shoe_formset = ShoeFormSet(prefix='shoes') when the form renders. What's going wrong?