I wanted to implement Select2MultipleWidget but I have not managed to succeed in the view. This is what I have but it gives a value error
raise ValueError(
ValueError: Cannot assign "<QuerySet [<Books: Utengano-ut/23>]>": "TeacherIssue.book_id" must be a "Books" instance.
My view
def new_issue(request,pk):
if request.method == 'POST':
form = IssueForm(request.POST,school= request.user.school,pk=pk,issuer = request.user)
if form.is_valid():
print("Form valid")
try:
book = request.POST.getlist('book_id')
#book = form.cleaned_data['book_id'].id
for item in book:
form.cleaned_data[item].id
form.save(commit=True)
books = Books.objects.filter(id__in = book).select_related('subject')
for book.id in books:
Books.Claimbook(book)
return redirect('all_borrowed_teacher', borrowed=borrowed)
except Exception as e:
return redirect('teachers')
else:
form = IssueForm(school= request.user.school,pk=pk,issuer = request.user)
return render(request, 'lib.html', {'form': form})
This is the form
class IssueForm(forms.ModelForm):
def __init__(self,*args, pk, **kwargs):
super(IssueForm, self).__init__(*args, **kwargs)
self.fields["book_id"] = forms.ModelMultipleChoiceField(queryset=Books.objects.all(), widget=Select2MultipleWidget)
class Meta:
model = TeacherIssue
fields = ['book_id']
Related
I have the next form in Django:
class Medical(forms.ModelForm):
worker= forms.ModelChoiceField(
queryset=Worker.objects.none(),
empty_label=None,
widget=forms.Select(attrs={'class': 'form-control'})
)
description=forms.CharField(
widget=forms.Textarea(attrs={'class': 'form-control'})
)
upload=forms.FileField(
widget=forms.FileInput(attrs={'class': 'form-control'})
)
class Meta:
model = Medical_Issue
fields = (
'worker',
'description',
'upload',
)
def __init__(self, *args, **kwargs):
user_id = kwargs.pop('user_id')
method=kwargs.pop('method')
super().__init__(*args, **kwargs)
self.fields['worker'].queryset = Worker.objects.filter(user_id=user_id)
def save(self, commit=True):
m = super(Medical, self).save(commit=False)
m.worker=self.cleaned_data['worker']
m.description=self.cleaned_data['description']
m.upload=self.cleaned_data['upload']
if commit:
m.save()
return m
And following views:
def medical_list(request):
worker=Worker.objects.filter(user_id=request.user.id).get()
issues=Medical_Issue.objects.filter(worker=worker.id).order_by('-created_at')
return render(request,'medical_list.html', {'medical_issues':issues})
def medical_add(request):
print(request.user.id)
if request.method == "POST":
form = Medical(request.POST,request.FILES,user_id=request.user, method= 'ADD')
if form.is_valid():
form.save()
return redirect('medical_list')
else:
form = Medical(user_id=request.user, method= 'ADD')
return render(request, 'medical_add.html', {'method':'ADD','form': form})
def medical_edit(request,id_issue):
worker=Worker.objects.get(user_id=request.user)
issues=Medical_Issue.objects.filter(worker=worker).order_by('-created_at')
issue= Medical_Issue.objects.get(id=id_issue)
if request.method == 'GET':
form = Medical(user_id=worker.user_id,instance=issue, method= 'EDIT')
else:
form = Medical(request.POST, request.FILES, user_id=worker.user_id, method= 'EDIT')
if form.is_valid():
form.save()
return redirect('medical_list')
return render(request,'medical_add.html', {'method':'EDIT','form': form})
Main probles is when adding, it saves record just fine, but when editing, it is creating a new instance of the issue.
I´m trying to make it modifying save method on form, but maybe it´s not the right approach? With thata said, I have tried to add an id field to the form, but same results from this
Thanks
I suspect that you don't pass the correct instance value to the form in your medical_edit view:
issue= Medical_Issue.objects.get(id=id_issue)
if request.method == 'GET':
form = Medical(
user_id=worker.user_id,
instance=issue, # <-- issue or parte?
method='EDIT'
)
UPDATE
It should also include the instance argument in the POST method.
if request.method == 'GET':
# ...
else:
form = Medical(
request.POST,
request.FILES,
instance=issue, # <--
user_id=worker.user_id,
method= 'EDIT'
)
I just want to add an initial value to one field when it gets populated, this is my view
def add_program(request):
module = Module.objects.all()
last_item = Programme.objects.filter(module_id__in=module).last()
if last_item:
day = last_item.day + 1
else:
day = 1
initial_data = {
'day': day
}
if request.method == 'POST':
form = ProgramAddForm(request.POST or None, request.FILES or None, initial=initial_data)
if form.is_valid():
instance = form.save(commit=False)
instance.save()
return redirect('program_add')
else:
form = ProgramAddForm()
return render(request, 'client_apps/program/form.html', {'form': form})
and form
class ProgramAddForm(forms.ModelForm):
class Meta:
model = Programme
fields = ['module', 'day', .........]
even though initial value is passed nothing is visible in day field when form populates, is there any alternative method?
That is because you only use it in case of the POST request, not the GET request:
def add_program(request):
module = Module.objects.all()
last_item = Programme.objects.filter(module_id__in=module).last()
if last_item:
day = last_item.day + 1
else:
day = 1
initial_data = {
'day': day
}
if request.method == 'POST':
form = ProgramAddForm(request.POST, request.FILES, initial=initial_data)
if form.is_valid():
instance = form.save()
return redirect('program_add')
else:
form = ProgramAddForm(initial=initial_data) # ← initial data for a GET request
return render(request, 'client_apps/program/form.html', {'form': form})
you can add it in the init method
class ProgramAddForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
super(YoutubeModelForm, self).__init__(*args, **kwargs)
self.fields["day"].value = "day"
self.fields["day"].initial = "day"
self.fields["day"].initial = "padding-top: 0;"
class Meta:
model = Programme
this to load in the form and in the admin of django
I have my response form and view like this
class ResponseForm(ModelForm):
class Meta:
model = ResponseModel
exclude = ('author', 'title','submit_count')
# help_texts = {
# 'ans1': user.q1.value,
# }
#login_required
def ResponseFormView(request):
if request.method == "POST":
form = ResponseForm(request.POST)
if form.is_valid():
submission = form.save(commit=False)
submission.author = request.user
submission.save()
return render(request, 'thanks.html', {})
else:
form = ResponseForm()
return render(request, 'response_tem.html', {'form': form})
I want the help text for 'ans1' field to be the value of q1 field of request.user. How do I do it?
You can do it like this:
class ResponseForm(ModelForm):
def __init__(self, *args, **kwargs):
user = kwargs.pop('user', None) # popping user from known arguments
super(ResponseForm, self).__init__(*args, **kwargs)
if user:
self.fields['ans1'].help_text = "Help Text for {}".format(user.username)
class Meta:
model = ResponseModel
exclude = ('author', 'title','submit_count')
#login_required
def ResponseFormView(request):
if request.method == "POST":
form = ResponseForm(request.POST)
if form.is_valid():
submission = form.save(commit=False)
submission.author = request.user
submission.save()
return render(request, 'thanks.html', {})
else:
form = ResponseForm(user=request.user) # passing user as known argument
return render(request, 'response_tem.html', {'form': form})
Here, in the view I am passing the request.user as known argument when I am initiating Form Class's Object (marked with comment). Then in the Form, I am catching the user sent from view and updating the field's help text.
def user_info(request, template_name='social/retrieve_user_data.html', username=None):
user = User.objects.get(username=username)
if request.method == 'POST':
form = UserInfoForm(request.POST, user)
print(form.is_valid())
if form.is_valid():
form.save()
else:
print('not post')
form = UserInfoForm(user)
return render_to_response(template_name, RequestContext(request, {
'form': form,
}))
class UserInfoForm(forms.Form):
def __init__(self,*args,**kwargs):
self.user = kwargs.pop('user')
super(UserInfoForm,self).__init__(*args,**kwargs)
This is producing a KeyError with exception value u'user'. What is wrong here? In both cases, form is initialized with a valid value of user. Why am I getting a keyerror>
You're not passing the user as a keyword argument in either the if or the else block. It should be:
form = UserInfoForm(request.POST, user=user)
and:
form = UserInfoForm(user=user)
Only func(foo=bar)can put {"foo":bar} into kwargs dictionary! According to your code form = UserInfoForm(request.POST, user),you can use self.user = args[1] to capture user.
I love how I can pass an instance to a form and it will populate it on a page. The trouble I am having is with formset_factory. I am trying to use query_set...
def classroom_update(request, pk):
classroom = get_object_or_404(Classroom, pk=pk)
students = classroom.student_set.all()
# Empty formset forms should be required
class RequiredFormSet(BaseFormSet):
def __init__(self, *args, **kwargs):
super(RequiredFormSet, self).__init__(*args, **kwargs)
for form in self.forms:
form.empty_permitted = False
#StudentFormSet = inlineformset_factory(Classroom, Student)
StudentFormSet = formset_factory(StudentForm, max_num=100, formset=RequiredFormSet)
if request.method == 'POST': # If the form has been submitted...
classroom_form = ClassroomForm(request.POST)
student_formset = StudentFormSet(request.POST, request.FILES)
if classroom_form.is_valid() and student_formset.is_valid():
classroom = classroom_form.save(commit=False)
classroom.user = request.user
classroom.save()
for form in student_formset.forms:
student = form.save(commit=False)
student.classroom = classroom
student.save()
return HttpResponseRedirect('/') # Redirect to a 'success' page
else:
classroom_form = ClassroomForm(instance=classroom)
student_formset = StudentFormSet(query_set=students)
# For CSRF protection
# See http://docs.djangoproject.com/en/dev/ref/contrib/csrf/
c = {'classroom_form': classroom_form,
'student_formset': student_formset,
}
c.update(csrf(request))
return render_to_response('reports/modify_classroom.html', c)
EDIT: Here is the error message...
formset_factory() got an unexpected keyword argument 'query_set'
Apparently I don't know how to use query_set...