I am trying to add in a manytomany an object but I have a problem because the user in not the request.user and I can't make a get because the info comes from a form..
My code (in the view):
editedcourse = Course.objects.get(id=Course_id)
# Use the model ChangeCourseOwnerForm.
form = ChangeCourseOwnerForm(instance=editedcourse)
# Test if its a POST request.
if request.method == 'POST':
# Assign to form all fields of the POST request.
form = ChangeCourseOwnerForm(request.POST, instance=editedcourse)
if form.is_valid():
# Save the course.
obj = form.save()
newusername = form['owner'] # Return an User
newusername.userprofile.courses_list.add(editecourse)
The problem is in last two lines because the form doesn't have a "userprofile"... All other code is for comprehension but it works.
The model of the form :
class ChangeCourseOwnerForm(forms.ModelForm):
class Meta:
model = Course
fields = ('owner',)
The model of a Course(I am not english, is it ok at singular the world Course?) :
class Course(models.Model):
name = models.CharField(max_length=30)
description = models.TextField(max_length=30)
owner = models.ForeignKey(User, limit_choices_to={'is_staff': True})
years = models.CharField(max_length=11, choices=YEARS_CHOICES,
default='%d - %d' % (date.year, date.year + 1))
# In Admin panel : object = username
def __unicode__(self):
return self.name
Thanks you for your help, hours of work over that make me foolish :D
It's ok, I have done that :
newowner = form['owner'].value()
new = User.objects.get(id=newowner)
addcourse = new.userprofile.courses_list.add(obj)
Related
I'm pretty new to django and working on a blog based project where user can add ratings to specific type of review post.For example giving stars are enabled for restaurant but not for tech stores.
I have created two different form for "review" and "star" model. I want to rate the restaurant using the model named "star" and do it in same template.But I'm having difficulties to do that.
Im getting this error.
"The above exception (NOT NULL constraint failed: reviews_star.post_id_id) was the direct cause of the following exception:"
How do I get the review id that I just save with "review_form.save()".
my review model kinda looks like this (Removed other attributes which aren't related to this problem):
class Review(models.Model):
review_title = models.CharField(verbose_name='Title', max_length=100)
review_body = models.TextField()
author = models.ForeignKey(settings.AUTH_USER_MODEL,on_delete=models.CASCADE)
restaurant_or_techstore = models.CharField(verbose_name='Foods or Travel',max_length=20)
slug = models.SlugField(null=False,unique=True,max_length = 300)
My rating model looks like this:
class Star(models.Model):
post_id = models.ForeignKey(Review, on_delete = models.CASCADE )
food = models.FloatField(verbose_name='Food',null=False)
service = models.FloatField(verbose_name='Food',null=False)
cleanliness = models.FloatField(verbose_name='Food',null=False)
and my view :
def CreateReview(request):
ImageFormSet = modelformset_factory(Image,form=ImageForm,extra=5)
if request.method == 'POST':
reviewForm = ReviewForm(request.POST)
formset = ImageFormSet(request.POST,request.FILES,queryset=Image.objects.none())
starsForm = StarsrForm(request.POST)
if reviewForm.is_valid() and formset.is_valid() and starsForm.is_valid():
review_form = reviewForm.save(commit=False)
review_form.author = request.user
review_form.post_or_discussion = 1
review_form.food_or_travel = 'Foods'
review_form.save()
reviewForm.save_m2m()
starsForm.save()
for form in formset.cleaned_data:
if form:
image = form['image']
photo = Image(review=review_form,image=image)
photo.save()
messages.success(request,'Image Uploaded Successfully')
return HttpResponseRedirect("/")
else:
print(reviewForm.errors, formset.errors)
else:
reviewForm = ReviewForm()
starsForm = StarsrForm()
formset = ImageFormSet(queryset=Image.objects.none())
return render(request,'reviews/review_form.html',{'reviewForm':reviewForm,'formset':formset,'starsForm':starsForm})
best try when you use ForeighKey is to use related_name attr for this field
class Star(models.Model):
post = models.ForeignKey(Review, related_name='post_review', on_delete = models.CASCADE )
after it you can refer to star from review by some_object_review.post_review.some_field_star
For you error above try reviews_star.post_id.id
Solve The problem.All I had to do is pass the review_form instance to the star form.
new view is:
if request.method == 'POST':
reviewForm = ReviewForm(request.POST)
formset = ImageFormSet(request.POST,request.FILES,queryset=Image.objects.none())
starsForm = StarsrForm(request.POST)
if reviewForm.is_valid() and formset.is_valid() and starsForm.is_valid():
review_form = reviewForm.save(commit=False)
review_form.author = request.user
review_form.post_or_discussion = 1
review_form.food_or_travel = 'Foods'
review_form.save()
reviewForm.save_m2m()
instance = review_form
print(instance.id)
star_form = starsForm.save(commit=False)
star_form.post_id = instance
star_form.save()
for form in formset.cleaned_data:
if form:
image = form['image']
photo = Image(review=review_form,image=image)
photo.save()
messages.success(request,'Image Uploaded Successfully')
return HttpResponseRedirect("/")
else:
print(reviewForm.errors, formset.errors)
else:
reviewForm = ReviewForm()
starsForm = StarsrForm()
formset = ImageFormSet(queryset=Image.objects.none())
return render(request,'reviews/review_form.html',{'reviewForm':reviewForm,'formset':formset,'starsForm':starsForm})
I am totally new in Django and I'm trying to use django forms for the first time. I have searched for this but I still haven't exactly found the answer. Basically I have a view like this:
def pay(request):
if request.method == 'POST':
form = PaymentForm(request.POST)
if form.is_valid():
# I have to calculate the checksum here
myModel = form.save()
else:
print form.errors
else: # The request is GET
form = PaymentForm()
return render_to_response('payment/payment.html', {'form':form})
and I want add an additional field, checksum to the form from the inputs I got from the form So when the user submits the entries the checksum should be added and added to the form and the form should be sent to an external server. But I don't know how to do that (I have defined checksum in my Model). Could anyone help me on this?
My model looks like this:
class PaymentModel(models.Model):
alphanumeric = RegexValidator(r'^[0-9a-zA-Z]*$', 'Only alphanumeric characters are allowed!')
secret_key = '6cd118b1432bf22942d93d784cd17084'
pid = models.CharField(primary_key=True, max_length=50, validators=[alphanumeric])
sid = models.CharField(primary_key=True, max_length=50, validators=[alphanumeric])
amount = models.DecimalField(max_digits=9, decimal_places=2)
success_url = 'http://localhost:8000/success'
cancel_url = 'http://localhost:8000/cancel'
error_url = 'http://localhost:8000/error'
checksum = 0
def calc_checksum(self):
checksumstr = "pid=%s&sid=%s&amount=%s&token=%s"% (self.pid, self.sid, self.amount, self.secret_key)
m = md5(checksumstr)
checksum = m.hexdigest()
return checksum
def __unicode__(self): #returns the unicode representation of the object
return self.name
and my form looks like this:
class PaymentForm(ModelForm):
class Meta:
model = PaymentModel
You can use the commit=False keyword argument to form.save():
def pay(request):
if request.method == 'POST':
form = PaymentForm(request.POST)
if form.is_valid():
# Will not save it to the database
myModel = form.save(commit=False)
# keep your business logic out of the view and put it on the form or model
# so it can be reused
myModel.checksum = form.calculate_checksum()
myModel.save()
else:
print form.errors
else: # The request is GET
form = PaymentForm()
return render_to_response('payment/payment.html', {'form':form})
Django form.save() documentation.
I haven't got much experience with building custom forms (only default model forms) and I'm looking for some help here. I'm trying to build a form that will get "feed_url" from user and if it already exist, just add reference into UserFeed model. In case it doesn't exist, it should add it to the Feed model and also reference it in UserFeed model as well.
models
class Category(models.Model):
name = models.CharField(unique=False, max_length=64)
user = models.ForeignKey(User)
slug = AutoSlugField(populate_from='name', always_update='True', unique_with='user')
def __unicode__(self):
return self.name
class Meta:
ordering = ('name',)
class Feed(models.Model):
feed_url = models.URLField(unique=True)
def __unicode__(self):
return self.feed_url
class UserFeed(models.Model):
feed = models.ForeignKey(Feed)
title = models.CharField(max_length=64)
category = models.ForeignKey(Category)
user = models.ForeignKey(User)
slug = AutoSlugField(populate_from='title', always_update='True', unique_with='user')
def __unicode__(self):
return self.title
class Meta:
ordering = ('title',)
forms
class UserFeedForm(forms.Form):
feed_url = forms.URLField()
title = forms.CharField(max_length=64)
category = forms.ModelChoiceField(Category)
user = forms.HiddenInput()
views
def addfeed(request):
categories = Category.objects.filter(user=request.user)
feeds = Feed.objects.all()
if request.method == 'POST':
form = UserFeedForm(request.POST)
form.fields['category'].queryset = categories
if form.is_valid():
feed = form.save(commit=False)
if form.fields['feed_url'] in feeds:
##### add to Feed object and add reference to UserFeed object
feed.user = request.user
feed.save()
else:
##### get id from Feed object and add reference to UserFeed object
feed.user = request.user
feed.save()
return HttpResponseRedirect("/reader/manage")
else:
form = UserFeedForm()
form.fields['category'].queryset = categories
context = {'form': form,}
return expand_context_and_render(request, context, 'reader/form.html')
Could anybody please point me in the right direction?
thanks
UPDATE
Now I have updated my view and form as follows:
forms
class UserFeedForm(forms.ModelForm):
feed = forms.URLField()
title = forms.CharField(max_length=64)
category = forms.ModelChoiceField(Category)
user = forms.HiddenInput()
class Meta:
model = UserFeed
fields = ['feed', 'title', 'category']
views
def addfeed(request):
categories = Category.objects.filter(user=request.user)
feeds = Feed.objects.all()
if request.method == 'POST':
form = UserFeedForm(request.POST)
form.fields['category'].queryset = categories
if form.is_valid():
feed = form.cleaned_data.get('feed')
if feed in feeds:
##### get id from Feed and add reference to UserFeed
existing_feed = Feed.objects.get(feed_url=feed)
form.feed = existing_feed.id
form.user = request.user
form.save(commit=True)
else:
##### add to Feed object and then add reference to UserFeed object
Feed.object.create(feed_url=feed)
existing_feed = Feed.objects.get(feed_url=feed)
form.feed = existing_feed.id
form.user = request.user
form.save(commit=True)
return HttpResponseRedirect("/reader/manage")
else:
form = UserFeedForm()
form.fields['category'].queryset = categories
context = {'page_title': page_title,
'form': form,
}
return expand_context_and_render(request, context, 'reader/form.html')
I think I'm getting closer but it still won't work, giving me this error:
"Cannot assign "u'http://feeds.bbci.co.uk/news/rss.xml'": "UserFeed.feed" must be a "Feed" instance."
Any idea how can I fix this?
thanks
Try taking a look at this question, and also inline formsets in the docs.
Additionally in your UserFieldForm, feed is defined as a URLField. So in your view, in this line:
feed = form.get_cleaned_data.get('feed')
your feed variable is simply a string, and not actually a Feed object. This is where your error might be occurring? That's where inline formsets could help you. Also, this line also makes your your if feed in feeds: statement moot, because feed is just a string, whereas feeds is a Queryset of all your Feed instances. I think this will cause your view to always end up in the else block?
I'm new to Django myself but I hope this helps you.
The logic you are looking for is:
Check if the feed exists.
If it exists, fetch it.
If it doesn't create a new feed.
Associate the feed with a UserFeed object.
The get_or_create method does parts 1-3, so you need the following:
if form.is_valid():
obj = form.save(commit=False)
feed = form.cleaned_data.get('feed')
feed_obj, created = Feed.objects.get_or_create(feed_url=feed)
obj.feed = feed_obj
obj.save()
return HttpResponseRedirect("/reader/manage")
I finally got it working like this:
forms
class UserFeedForm(forms.Form):
feed = forms.URLField()
title = forms.CharField(max_length=64)
category = forms.ModelChoiceField(Category)
user = forms.HiddenInput()
class Meta:
model = UserFeed
fields = ['feed', 'title', 'category']
views
def addfeed(request):
user = request.user
categories = Category.objects.filter(user=request.user)
if request.method == 'POST':
form = UserFeedForm(request.POST)
form.fields['category'].queryset = categories
if form.is_valid():
feed = form.cleaned_data['feed']
category = form.cleaned_data['category']
title = form.cleaned_data['title']
feed_obj, created = Feed.objects.get_or_create(feed_url=feed)
obj = UserFeed(feed=feed_obj, title=title, category=category, user=user)
obj.save()
return HttpResponseRedirect("/reader/manage")
else:
form = UserFeedForm()
form.fields['category'].queryset = categories
context = {'page_title': page_title,
'form': form,
}
return expand_context_and_render(request, context, 'reader/form.html')
Both tips from the answers below pointed me in the right direction. Thanks !
I got this form working Ok but i can't figure out how to save it to the database via the model i know this is a semantic question that i can't figure out Please Help. I'm using django The error is
D = Donation(user=request.user,name=form.cleaned_data['name'],description=cd['description']) D.save()
views.py
def donate(request):
if request.method == 'POST':
form = DonationForm(request.POST)
if form.is_valid():
cd = form.cleaned_data
D = Donation(user=request.user,name=form.cleaned_data['name'],description=cd['description'])
D.save()
return HttpResponseRedirect('/test/')
else:
form =DonationForm()
return render_to_response('addaDonation.html',{'form': form},context_instance=RequestContext(request))
`
Donation is my Model and i need to get the information from my form into the Donation Model so i can D.save
class DonationForm(forms.Form):
name = forms.CharField(max_length=50)
description = forms.CharField(max_length=3000)
towards = forms.CharField()
#image = forms.ImageField()
class Donation (models.Model):
user = models.ForeignKey(User)
name = models.CharField(max_length=50)
description = models.CharField(max_length=3000)
towards = models.ForeignKey(NonProfit)
image = models.ImageField(upload_to='photos/%Y/%m/%d')
The error I get is
(1054, "Unknown column 'name' in 'field list'")
Request information
GET
No GET data
POST
Variable Value
csrfmiddlewaretoken u'nXGN4gdZwk2qxNpP9YIXzvNQI7lKQe5r'
towards u'this'
name u'this'
description u'that'
change your form class to the following;
from django.forms import ModelForm
class DonationForm(ModelForm):
class Meta:
class = Donation
exclude = ("user", )
def save(self, user):
donation = super(DonationForm, self).save(commit=False)
donation.user = user
donation.save()
return donation
Then you should be able to change the view.py to the following;
def donate(request):
if request.method == 'POST':
form = DonationForm(request.POST, request.FILES)
if form.is_valid():
form.save(request.user)
return HttpResponseRedirect('/test/')
else:
form = DonationForm()
return render_to_response('addaDonation.html',{'form': form},context_instance=RequestContext(request))
See official documentation Creating forms from Models
I've read every "InterityError" + "may no be NULL" post and still can't track down what's causing this error.
I've got a two-part signup form. First part is just selecting a product. That passes a product ID to the next page as part of the URL, where they input personal info. I can get the form to work fine until I start removing fields -- i'm using model forms -- because some fields don't need to be displayed.
Here's my model, and the modelForm:
class SimpleSubscriber(models.Model):
name = models.CharField(max_length=255)
address = models.CharField(max_length=200)
city = models.CharField(max_length=100)
state = models.CharField(max_length=2)
zipcode = models.CharField(max_length=9)
phone = models.CharField(max_length=10)
email = models.EmailField()
date_created = models.DateTimeField(null=True)
sub_type = models.ForeignKey(Product)
def __unicode__(self):
return self.name
class SubscriberForm(ModelForm):
class Meta:
model = SimpleSubscriber
fields = ('name', 'address', 'city', 'state', 'zipcode', 'phone', 'email', 'sub_type',)#'date_created',
And here's my views:
def select_product(request):
title = "get yourself an e-edition. wurd."
pform = Product.objects.order_by('product_active')
if request.method == 'POST': # If the form has been submitted...
pform = ProductForm(request.POST) # A form bound to the POST data
if pform.is_valid(): # All validation rules pass
# ...
return HttpResponseRedirect('signup/%i' % pform.id) # Redirect after POST
else:
form = ProductForm() # An unbound form
return render_to_response('signup/index.html', {'title': title, 'pform': pform}, context_instance=RequestContext(request))
def subscriber_signup(request, product_id):
productchoice = Product.objects.get(id=product_id)
now = datetime.datetime.now()
title = "We need some information."
if request.method == 'POST': # If the form has been submitted...
sform = SubscriberForm(request.POST) # A form bound to the POST data
if sform.is_valid(): # All validation rules pass
sform.date_created = now
sform.sub_type = productchoice
sform.save()
return HttpResponseRedirect('thankyou/') # Redirect after POST
else:
sform = SubscriberForm() # An unbound form
return render_to_response('signup/detail.html', {'title': title, 'sform': sform, 'productchoice': productchoice, 'now': now.date(),}, context_instance=RequestContext(request))
I think it has something to do with the modelForm, but I'm pretty new, so I really have no idea. If I add all the fields to SubscriberForm, then they get filled out and everything works fine. But I don't want users to have to say when they filled out the form, so i put sform.date_created = now and I want the product_id to be filled in automatically by what choice they picked on the previous page. but if I exclude these fields from the form it throws the IntegrityError, which isn't very helpful in explaining what to change.
Any hints on where I'm messing up?
Thanks,
Two things:
1) You may benefit from using exlude in your form definition:
class SubscriberForm(ModelForm):
class Meta:
model = SimpleSubscriber
exclude = ('date_created', )
2) To your question, heres how to fix it:
if sform.is_valid(): # All validation rules pass
suscriber = sform.save(commit=False)
suscriber.date_created = now
suscriber.sub_type = productchoice
suscriber.save()
Alternatively to #fceruti's suggestion, you can also add more kwarg tags null=True on the model's field where appropriate - only forcing a minimal set of fields to be completed in the form.