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How to access a foreign key related field in a template when using Django model form

My Objective
Access the field name in the Parent Model ParentModel and display its content in a form instance in the template. For example, let the field parent be a foreign key in the ChildModel as described below.
What I have tried
Access the parent field in the form as {{ form.parent.name }} in the template
Errors received
Tried looking up form.parent.name in context
models.py
class ParentModel(models.Model):
name = models.CharField()
def __str__(self):
return self.name
class ChildModel(models.Model):
parent = models.ForeignKey(ParentModel)
def __str__(self):
return self.parent.name
forms.py
class ChildModelForm(ModelForm):
class Meta:
model = ChildModel
fields = '__all__'
widgets = {'parent': forms.Select(),}
views.py
def childView(request, pk):
template = 'template.html'
child = ChildModel.objects.get(parent=pk)
form = ChildModelForm(instance=child)
if request.method == 'POST':
form = ChildModelForm(request.POST, instance=child)
if form.is_valid():
form.save()
else:
form = ChildModelForm(instance=child)
context = {'form': form, }
return render(request, template, context)
template.html
<form method="POST" action="">
{% csrf_token %}
{{form.parent.name}}
<button type="submit">Save</button>
</form>
Now the child model form displays pk I want to display the name of the parent field
I have also tried using this Django access foreignkey fields in a form but it did not work for me.

From my understanding, you want to display the form instance's values. You can do:
form.instance.parent.name

Django / Model Forms

Completely new to all computer programming and trying to build an app that tracks my smoking habits. The first step was creating a Django model called packs:
class packs (models.Model):
timestamp = models.DateTimeField(auto_now_add=True, auto_now=False, blank=False)
num_packs = models.SmallIntegerField(max_length=10)
cost_packs = models.DecimalField(max_digits=6, decimal_places=2)
Next I created a forms.py page and this is where I started getting lost:
from django.forms import ModelForm
from .models import packs
class packsForm(ModelForm):
class Meta:
model = packs
fields = ['num_packs', 'cost_packs']
Of course that led to my failure in HTML trying to render a page that has all the form data:
{%block content%}
<div class = "form_pack">
<h3>FORM PACK</h3>
<p>
<form method="POST" action="."> {% csrf_token %}
<input text="cost_pack" name=cost_pack>
{{ form }}
<input type="submit" value="save"/>
</form>
</p>
</div>
{% endblock %}
To help my view.py looks like this:
def packs_create(request):
form=packsForm(request.POST or None)
if form.is_valid():
return render(request, 'pack/index.htmnl', {'form': form})
Now when I refresh the page I don't get the form. Just the one input i put in.
Can someone help me sort out which path I got lost in and where I need to connect the dots? I believe my forms.py is not complete, but not sure where to progress...
Thanks,
DrKornballer

Just update your views.py and forms.py you will get your form and can save the data entered.
views.py
def packs_create(request):
if request.method == "POST":
form = packsForm(request.POST)
if form.is_valid():
form.save(commit = True)
else:
form = PacksForm()
return render(request, 'pack/index.html', {'form': form})
forms.py
class packsForm(ModelForm):
class Meta:
model = packs
fields = ('num_packs', 'cost_packs')

How to pass modelform instance fields that are not intended for user input to template in Django

I'm using formsets to pass several modelforms with existing model instances to a template. I'd like to do something in the template for each form depending on the value of a model field (let's call it field_check) for that instance. Field_check is not intended for user input and a required field.
If I include field_check into my form without rendering it, I can easily access its value. But then after submitting the form Django complains that field_check is required.
What is the recommended way to access the value of field_check without including it as an input field or running into the required field problem?
Models.py
class MyModel(models.Model):
field_check = models.CharField(max_length=50)
user_input_field = models.CharField(max_length=50)
some_type = models.CharField(max_length=50)
Forms.py
class MyModelForm(forms.ModelForm):
class Meta:
model = MyModel
fields = [
'user_input_field',
'field_check', #having this field here creates problems, since it's not intended for user input
]
MyFormSet = forms.modelformset_factory(MyModel, form = MyModelForm, extra=0)
Views.py
def myview(request):
this_type = 1
formset = MyFormSet(request.POST or None, queryset = MyModel.objects.filter(some_type = this_type))
if request.method == 'POST':
if formset.is_valid():
formset.save()
return render(request, 'some_other_template.html')
context = {'formset':formset}
return render(request, 'mytemplate.html', context)
Template
<form method="post">
{{ formset.management_form }}
{% for form in formset %}
{{form.id}
# here is the part where I check for the value of field_check
{% if form.field_check == 'Some value' %}
Some text
{% else %}
Some other text
{% endif %}
{{form.user_input_field}}
{% endfor %}
<button type="submit">
</form>

image not saved while updating userprofile in django

I am trying to update a userprofile model that i used to save additional information over the inbuilt User model, now when i am trying to update it , the image does not gets saved. I need help to resolve this issue
# In views.py
#login_required(login_url=LOGIN_REDIRECT_URL)
def update_user_profile(request):
userobj = get_object_or_404(UserProfile, user=request.user)
form = UserProfileForm(data = request.POST or None,files= request.FILES or None, instance=userobj)
if request.method=='POST':
print(form.is_valid())
if form.is_valid():
profile = form.save(commit=False)
profile.picture = form.cleaned_data['picture']
profile.about = form.cleaned_data['about']
profile.save()
else:
print("NO picure")
return HttpResponseRedirect("/blog/profile/")
return render(request, "blog/post_update.html", {'form':form})
#models.py
class UserProfile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
about = models.CharField(max_length=200, null=True, blank=True)
picture = models.ImageField(upload_to="profile_images/", blank=True)
def __str__(self):
return str(self.user)
#In forms.py
class UserProfileForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
super(UserProfileForm, self).__init__(*args, **kwargs)
self.fields['about'].widget.attrs.update({'class': 'form-control '})
self.fields['picture'].widget.attrs.update({'class': 'form-control-file'})
class Meta:
model = UserProfile
fields = ('about', 'picture')
# userprofileform.html
{% extends 'base.html' %}
{% block content %}
<form method="POST" enctype="multipart/form-data">
{% csrf_token %}
{{ form.as_p }}
<input type="submit" class="btn btn-primary" value="Create Profile">
</form>
{% endblock %}
please take a look at the code and help. while registering if the image was uploaded it get's saved , but when i try to update the userprofile directly in profile section image does not get changed and shows the same as one saved while user registration else it shows None.

I did some changes on templates in settings.py and got my project runnning. Issue was that i was not mentioning the Templates directory properly

Django ModelForm; User, this field is required

I am having some issues with a (model)form consisting of just a single button. When I try to submit the form this message is displayed:
user
This field is required.
The ModelForm looks like this:
from django.forms import ModelForm
from .models import HulpOproep
class HulpOproepForm(ModelForm):
class Meta:
model = HulpOproep
fields = ['user', ]
The Model looks like this:
class HulpOproep(models.Model):
user = models.ForeignKey(User)
time = models.DateTimeField(auto_now_add=True, verbose_name='Tijd')
def __str__(self):
return '%s %s' % (self.user.username, str(self.time))
def username(self):
return self.user.username
def first_name(self):
return self.user.first_name
def last_name(self):
return self.user.last_name
class Meta:
verbose_name = 'Hulp Oproep'
verbose_name_plural = 'Hulp Oproepen'
The View looks like this:
def verzend_oproep(request):
if request.method == 'POST':
form = HulpOproepForm(request.POST)
if form.is_valid():
oproep = form.save(commit=False)
oproep.user = request.user
oproep.save()
return redirect('portal/index/')
else:
form = HulpOproepForm()
return render(request, 'portal/verzend_oproep.html', {'form': form})
The Template:
{% extends "base.html" %}
{% block head %}
<title>Zorggroep | Hulp Oproep</title>
{% endblock %}
{% block body%}
<h1>Verstuur Hulpoproep</h1>
<form method="POST" class="post-form">{% csrf_token %}
{{ form.as_P }}
{{ form.errors }}
<button type="submit" class="save btn btn-default">Verstuur</button>
</form>
{% endblock %}
The 'user' in the HulpOproep model is a ForeignKey and should be the currently logged in user's User object. I tried to specify this using the line:
oproep.user = request.user
So what should happen is:
Get the current user's 'User' object and use it as the 'HulpOproepForm.user'. This way the 'HulpOproepForm.user' is the 'HulpOproep.user' and a Foreign Key.
I have followed multiple tutorials and have searched around, but I cannot find a solution. I'm sorry if the answer is logical, but I have been using Django for only 5 days and have 1.5 months of programming experience under my belt.
Thank you!

Thanks PatNowak and Radek!
I did not know the form was waiting for user input instead of code input. I managed to fix it by adding exclude to the ModelForm.
class HulpOproepForm(ModelForm):
class Meta:
model = HulpOproep
exclude = ['user', 'time']