BooleanField not updating: Django

I am learning Django by building an example app in which students can choose to participate in study sections. The participate action is a BooleanField that I would like the students to be able to check or uncheck and update. It is unchecked by default and I am able to check it and save the form. But when I go to update the form the box is unchecked. How can I set up the form, model, and view so that the participate field can be saved and updated?

models.py

class StudentAnswer(models.Model):

    student = models.ForeignKey(Student, on_delete=models.CASCADE, related_name='study_answers')

    study = models.ForeignKey(Study, on_delete=models.CASCADE, related_name='study_participate', null=True)

    participate = models.BooleanField('Participate?', default=False)

forms.py

class ViewStudyForm(forms.ModelForm):



    class Meta:

        model = StudentAnswer

        fields = ('participate', )

views.py

@login_required

@student_required

def participate_study(request, pk):

    study = get_object_or_404(Study, pk=pk)

    student = request.user.student



    total_details = study.details.count()

    details = student.get_details(study)



    if request.method == 'POST':

        form = ViewStudyForm(data=request.POST)

        if form.is_valid():

            with transaction.atomic():

                student_answer = form.save(commit=False)

                student_answer.student = student

                student_answer.save()

                messages.success(request, 'Congratulations! You signed up to participate in the study %s!' % (study.name))

                return redirect('students:study_list')

    else:

        form = ViewStudyForm()

    progress=100

    return render(request, 'classroom/students/past_study_form.html', {

        'study': study,

        'details': details,

        'form': form,

        'progress': progress

    })

asked Jan 2 at 14:35

Ambrose

228

1

try smth like this: ...else: participate = StudentAnswer.objects.get(id=pk).values('participate'); form = ViewStudyForm(initial={'participate': participate})

– Chiefir
Jan 2 at 14:40

add a comment |

models.py

class StudentAnswer(models.Model):

    student = models.ForeignKey(Student, on_delete=models.CASCADE, related_name='study_answers')

    study = models.ForeignKey(Study, on_delete=models.CASCADE, related_name='study_participate', null=True)

    participate = models.BooleanField('Participate?', default=False)

forms.py

class ViewStudyForm(forms.ModelForm):



    class Meta:

        model = StudentAnswer

        fields = ('participate', )

views.py

@login_required

@student_required

def participate_study(request, pk):

    study = get_object_or_404(Study, pk=pk)

    student = request.user.student



    total_details = study.details.count()

    details = student.get_details(study)



    if request.method == 'POST':

        form = ViewStudyForm(data=request.POST)

        if form.is_valid():

            with transaction.atomic():

                student_answer = form.save(commit=False)

                student_answer.student = student

                student_answer.save()

                messages.success(request, 'Congratulations! You signed up to participate in the study %s!' % (study.name))

                return redirect('students:study_list')

    else:

        form = ViewStudyForm()

    progress=100

    return render(request, 'classroom/students/past_study_form.html', {

        'study': study,

        'details': details,

        'form': form,

        'progress': progress

    })

asked Jan 2 at 14:35

Ambrose

228

1

try smth like this: ...else: participate = StudentAnswer.objects.get(id=pk).values('participate'); form = ViewStudyForm(initial={'participate': participate})

– Chiefir
Jan 2 at 14:40

add a comment |

models.py

class StudentAnswer(models.Model):

    student = models.ForeignKey(Student, on_delete=models.CASCADE, related_name='study_answers')

    study = models.ForeignKey(Study, on_delete=models.CASCADE, related_name='study_participate', null=True)

    participate = models.BooleanField('Participate?', default=False)

forms.py

class ViewStudyForm(forms.ModelForm):



    class Meta:

        model = StudentAnswer

        fields = ('participate', )

views.py

@login_required

@student_required

def participate_study(request, pk):

    study = get_object_or_404(Study, pk=pk)

    student = request.user.student



    total_details = study.details.count()

    details = student.get_details(study)



    if request.method == 'POST':

        form = ViewStudyForm(data=request.POST)

        if form.is_valid():

            with transaction.atomic():

                student_answer = form.save(commit=False)

                student_answer.student = student

                student_answer.save()

                messages.success(request, 'Congratulations! You signed up to participate in the study %s!' % (study.name))

                return redirect('students:study_list')

    else:

        form = ViewStudyForm()

    progress=100

    return render(request, 'classroom/students/past_study_form.html', {

        'study': study,

        'details': details,

        'form': form,

        'progress': progress

    })

asked Jan 2 at 14:35

Ambrose

228

models.py

class StudentAnswer(models.Model):

    student = models.ForeignKey(Student, on_delete=models.CASCADE, related_name='study_answers')

    study = models.ForeignKey(Study, on_delete=models.CASCADE, related_name='study_participate', null=True)

    participate = models.BooleanField('Participate?', default=False)

forms.py

class ViewStudyForm(forms.ModelForm):



    class Meta:

        model = StudentAnswer

        fields = ('participate', )

views.py

@login_required

@student_required

def participate_study(request, pk):

    study = get_object_or_404(Study, pk=pk)

    student = request.user.student



    total_details = study.details.count()

    details = student.get_details(study)



    if request.method == 'POST':

        form = ViewStudyForm(data=request.POST)

        if form.is_valid():

            with transaction.atomic():

                student_answer = form.save(commit=False)

                student_answer.student = student

                student_answer.save()

                messages.success(request, 'Congratulations! You signed up to participate in the study %s!' % (study.name))

                return redirect('students:study_list')

    else:

        form = ViewStudyForm()

    progress=100

    return render(request, 'classroom/students/past_study_form.html', {

        'study': study,

        'details': details,

        'form': form,

        'progress': progress

    })

python django

asked Jan 2 at 14:35

Ambrose

228

asked Jan 2 at 14:35

Ambrose

228

asked Jan 2 at 14:35

Ambrose

228

asked Jan 2 at 14:35

Ambrose

228

asked Jan 2 at 14:35

Ambrose

228

1

try smth like this: ...else: participate = StudentAnswer.objects.get(id=pk).values('participate'); form = ViewStudyForm(initial={'participate': participate})

– Chiefir
Jan 2 at 14:40

add a comment |

1

try smth like this: ...else: participate = StudentAnswer.objects.get(id=pk).values('participate'); form = ViewStudyForm(initial={'participate': participate})

– Chiefir
Jan 2 at 14:40

try smth like this:

...else: participate = StudentAnswer.objects.get(id=pk).values('participate'); form = ViewStudyForm(initial={'participate': participate})

– Chiefir
Jan 2 at 14:40

try smth like this:

...else: participate = StudentAnswer.objects.get(id=pk).values('participate'); form = ViewStudyForm(initial={'participate': participate})

– Chiefir
Jan 2 at 14:40

add a comment |

1 Answer
1

active

oldest

votes

Try something like this:

....

else:

    participate = StudentAnswer.objects.get(student=student).values('participate')

    form = ViewStudyForm(initial={'participate': participate})

This should take boolean participate from your StudentAnswer instance and assign it to your form.

More informations is here in Django docs.

answered Jan 2 at 14:47

Chiefir

1,212315

Hi Chiefir. Thank you for the answer. This almost solved my issue, but initial does not play well with bound forms. My solution based off this was to use ... else: instance = StudentAnswer.objects.filter(student_id=patient.pk, study=study.pk).first(); form = ViewStudyForm(instance=instance)

– Ambrose
Jan 3 at 23:15

What went wrong with my variant?

– Chiefir
Jan 4 at 7:14

initial filled the participate field but left the ForeignKey fields for patient and study blank, so I could not save the form. I was going to bypass this behavior by adding the patient and study fields as hidden, but then I read about instance and it seemed like a simpler solution.

– Ambrose
Jan 4 at 13:42

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

Try something like this:

....

else:

    participate = StudentAnswer.objects.get(student=student).values('participate')

    form = ViewStudyForm(initial={'participate': participate})

This should take boolean participate from your StudentAnswer instance and assign it to your form.

More informations is here in Django docs.

answered Jan 2 at 14:47

Chiefir

1,212315

Hi Chiefir. Thank you for the answer. This almost solved my issue, but initial does not play well with bound forms. My solution based off this was to use ... else: instance = StudentAnswer.objects.filter(student_id=patient.pk, study=study.pk).first(); form = ViewStudyForm(instance=instance)

– Ambrose
Jan 3 at 23:15

What went wrong with my variant?

– Chiefir
Jan 4 at 7:14

initial filled the participate field but left the ForeignKey fields for patient and study blank, so I could not save the form. I was going to bypass this behavior by adding the patient and study fields as hidden, but then I read about instance and it seemed like a simpler solution.

– Ambrose
Jan 4 at 13:42

add a comment |

Try something like this:

....

else:

    participate = StudentAnswer.objects.get(student=student).values('participate')

    form = ViewStudyForm(initial={'participate': participate})

This should take boolean participate from your StudentAnswer instance and assign it to your form.

More informations is here in Django docs.

answered Jan 2 at 14:47

Chiefir

1,212315

Hi Chiefir. Thank you for the answer. This almost solved my issue, but initial does not play well with bound forms. My solution based off this was to use ... else: instance = StudentAnswer.objects.filter(student_id=patient.pk, study=study.pk).first(); form = ViewStudyForm(instance=instance)

– Ambrose
Jan 3 at 23:15

What went wrong with my variant?

– Chiefir
Jan 4 at 7:14

initial filled the participate field but left the ForeignKey fields for patient and study blank, so I could not save the form. I was going to bypass this behavior by adding the patient and study fields as hidden, but then I read about instance and it seemed like a simpler solution.

– Ambrose
Jan 4 at 13:42

add a comment |

Try something like this:

....

else:

    participate = StudentAnswer.objects.get(student=student).values('participate')

    form = ViewStudyForm(initial={'participate': participate})

This should take boolean participate from your StudentAnswer instance and assign it to your form.

More informations is here in Django docs.

answered Jan 2 at 14:47

Chiefir

1,212315

Try something like this:

....

else:

    participate = StudentAnswer.objects.get(student=student).values('participate')

    form = ViewStudyForm(initial={'participate': participate})

This should take boolean participate from your StudentAnswer instance and assign it to your form.

More informations is here in Django docs.

answered Jan 2 at 14:47

Chiefir

1,212315

answered Jan 2 at 14:47

Chiefir

1,212315

answered Jan 2 at 14:47

Chiefir

1,212315

answered Jan 2 at 14:47

Chiefir

1,212315

Hi Chiefir. Thank you for the answer. This almost solved my issue, but initial does not play well with bound forms. My solution based off this was to use ... else: instance = StudentAnswer.objects.filter(student_id=patient.pk, study=study.pk).first(); form = ViewStudyForm(instance=instance)

– Ambrose
Jan 3 at 23:15

What went wrong with my variant?

– Chiefir
Jan 4 at 7:14

initial filled the participate field but left the ForeignKey fields for patient and study blank, so I could not save the form. I was going to bypass this behavior by adding the patient and study fields as hidden, but then I read about instance and it seemed like a simpler solution.

– Ambrose
Jan 4 at 13:42

add a comment |

Hi Chiefir. Thank you for the answer. This almost solved my issue, but initial does not play well with bound forms. My solution based off this was to use ... else: instance = StudentAnswer.objects.filter(student_id=patient.pk, study=study.pk).first(); form = ViewStudyForm(instance=instance)

– Ambrose
Jan 3 at 23:15

What went wrong with my variant?

– Chiefir
Jan 4 at 7:14

initial filled the participate field but left the ForeignKey fields for patient and study blank, so I could not save the form. I was going to bypass this behavior by adding the patient and study fields as hidden, but then I read about instance and it seemed like a simpler solution.

– Ambrose
Jan 4 at 13:42

Hi Chiefir. Thank you for the answer. This almost solved my issue, but initial does not play well with bound forms. My solution based off this was to use

... else: instance = StudentAnswer.objects.filter(student_id=patient.pk, study=study.pk).first(); form = ViewStudyForm(instance=instance)

– Ambrose
Jan 3 at 23:15

Hi Chiefir. Thank you for the answer. This almost solved my issue, but initial does not play well with bound forms. My solution based off this was to use

... else: instance = StudentAnswer.objects.filter(student_id=patient.pk, study=study.pk).first(); form = ViewStudyForm(instance=instance)

– Ambrose
Jan 3 at 23:15

What went wrong with my variant?

– Chiefir
Jan 4 at 7:14

initial filled the participate field but left the ForeignKey fields for patient and study blank, so I could not save the form. I was going to bypass this behavior by adding the patient and study fields as hidden, but then I read about instance and it seemed like a simpler solution.

– Ambrose
Jan 4 at 13:42

add a comment |

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