I have the following model, included with their respective modelform (I am following the ModelForm guide on https://docs.djangoproject.com/en/1.5/topics/forms/modelforms/ ):
from django.db import models
from django.contrib.auth.models import User
from django.forms import ModelForm
class Person(models.Model):
user = models.OneToOneField(User)
first_name = models.CharField(max_length=50)
last_name = models.CharField(max_length=50)
birth_date = models.DateField()
address = models.CharField(max_length=100)
email = models.CharField(max_length=50)
class Meta:
abstract = True
class Trainer(Person):
team_name = models.CharField(max_length=50)
class Trainee(Person):
weight = models.DecimalField(max_digits=5, decimal_places=2)
height = models.DecimalField(max_digits=3, decimal_places=2)
class TrainerForm(ModelForm):
class Meta:
model = Trainer
class TraineeForm(ModelForm):
class Meta:
model = Trainee
Now I am trying to get the form on the view to work. Once again, I took the example from https://docs.djangoproject.com/en/1.5/topics/forms/modelforms/
# Create your views here.
from django.http import HttpResponse
from django.forms.models import modelformset_factory
def index(request):
return HttpResponse("Hello, world. You're at the users index.")
def trainer_signup(request):
TrainerFormSet = modelformset_factory(Trainer)
if request.method == 'POST':
formset = TrainerFormSet(request.POST, request.FILES)
if formset.is_valid():
formset.save()
# do something.
else:
formset = TrainerFormSet()
return render_to_response("forms.html", {
"formset": formset,
})
The error I get is:
global name 'Trainer' is not defined
Thanks!
The problem is with this line of code:
TrainerFormSet = modelformset_factory(Trainer)
Because he doesn't know what Trainer is. You have to import your models into the views. Add this to the top of the views.py file, and everything will work:
from models import *
Related
I am getting an IntegrityError when I want to save a new course on my e-learning website. Of course, I have searched for a similar solution on StackOverflow but I couldn't find an appropriate way for my solution.
here are my models
UserAccount Model
from django.db import models
from django.contrib.auth.models import AbstractUser
class UserAccount(AbstractUser):
email = models.EmailField(
max_length=255, verbose_name='email', unique=True)
username = models.CharField(max_length=255, unique=True)
is_student = models.BooleanField(default=False)
is_teacher = models.BooleanField(default=False)
Course Model
from django.db import models
from accounts.models import UserAccount
class Course(models.Model):
owner = models.ForeignKey(
UserAccount, related_name='courses_created', on_delete=models.CASCADE)
title = models.CharField(max_length=200)
slug = models.SlugField()
description = models.TextField()
cover_photo = models.ImageField(upload_to="cover/", null=True, blank=True)
Also, my course form is here
class CourseForm(forms.ModelForm):
class Meta:
model = Course
fields = ['curriculum', 'title', 'description', 'cover_photo']
widgets = {
'description': forms.Textarea(attrs={'rows': 3})
}
So in my view, I like to send the list of my courses to the template and also my CourseForm() using the get_context_data method. The code is bellow
My class-based view
class OwnerListMixin(object):
def get_queryset(self):
qs = super().get_queryset()
return qs.filter(owner=self.request.user)
class OwnerCourseMixin(OwnerListMixin, LoginRequiredMixin, PermissionRequiredMixin):
model = Course
fields = ['curriculum', 'title', 'description', 'cover_photo']
success_url = reverse_lazy('manage_course_list')
class ManageCourseListView(OwnerCourseMixin, ListView):
template_name = "courses_app/manage/course/list.html"
permission_required = "courses_app.view_course"
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context['form'] = CourseForm()
return context
but when I render the form in my template to save a new course I get the following Error
IntegrityError at /create/
NOT NULL constraint failed: courses_app_course.owner_id
CREATE VIEW
class CourseCreateView(OwnerCourseMixin, CreateView):
permission_required = "courses_app.add_course"
template_name = "courses_app/manage/course/form.html"
success_url = reverse_lazy("manage_course_list")
You need to set the user as the owner what currently is not happening. The form is being saved with the fields you have set. There are multiple ways of adding the user. You could do it this way.
from django.shortcuts import redirect
class CourseCreateView(OwnerCourseMixin, CreateView):
permission_required = "courses_app.add_course"
template_name = "courses_app/manage/course/form.html"
success_url = reverse_lazy("manage_course_list")
def form_valid(self, form):
instance = form.save(commit=False)
instance.owner = self.request.user
instance.save()
return redirect(self.get_success_url())
I have a django form which takes a paramater from the view to initialize the MultipleChoiceField based on the user instance.
The form is working fine when loading the template.
when i submit the form the init method in the form raising an error.
My Model models.py
from django.db import models
from django.contrib.auth.models import User
class Group(models.Model):
group_name = models.CharField('Group name', max_length=50)
def __str__(self):
return self.group_name
class GroupMembers(models.Model):
group_name = models.ManyToManyField(Group)
members = models.ForeignKey(User, on_delete=models.CASCADE)
class Transactions(models.Model):
bill_type = models.CharField('Bill type',max_length=200)
added_by = models.ForeignKey(GroupMembers, on_delete=models.CASCADE)
added_to = models.ForeignKey(Group, on_delete=models.CASCADE)
purchase_date = models.DateField(auto_now=True)
share_with = models.CharField('Share among',max_length=250)
amount = models.IntegerField(default=0)
def __str__(self):
return self.bill_type
forms forms.py
from django import forms
from .models import Transactions, GroupMembers
class Bill_CreateForm(forms.ModelForm):
def __init__(self, user_list, *args, **kwargs):
super(Bill_CreateForm, self).__init__(*args, **kwargs)
self.fields['share_with'] = forms.MultipleChoiceField(widget=forms.CheckboxSelectMultiple,choices=tuple([(name, name.members) for name in user_list]))
class Meta:
model = Transactions
fields = (
'bill_type',
'amount',
'added_by',
'added_to',
'share_with',
)
** RESOLVED MY ISSUE WITH THE HELP OF #Alasdair "
EDITED SOLUTION
views views.py
from django.shortcuts import render, redirect
from django.contrib.auth.models import User
from .models import Transactions, Group, GroupMembers
from .forms import Bill_CreateForm
from django.http import HttpResponse, HttpResponseRedirect
def add_bills_home(request, id=None):
user = User.objects.get(pk=id)
grpname = Group.objects.filter(groupmembers__members=user)
gm = GroupMembers.objects.filter(group_name__group_name=grpname[0])
users_list = [i for i in gm]
if request.method == 'POST':
form = Bill_CreateForm(users_list, request.POST)
if form.is_valid():
print(form.cleaned_data['share_with'])
form.save()
form = Bill_CreateForm(users_list)
return render(request, 'bills/create_bill.html', {'form':form})
else:
form = Bill_CreateForm(users_list)
return render(request, 'bills/create_bill.html', {'form':form})
The error is
After submiting the form with data
the request.POST method returning
below data
i don't know if the request.POST method re-initializes the form with the filled data and pass it to the init method in the form.py.
Please help me with this
I'm learning in DJango and I have learned alot of stuff from the documentation and also in StackOverflow. Right now, I'm kinda stuck and I just want to know who can I check in a class based view, if the user is in the manager column in job model/ It can also be in the manager model that's fine too.
I tried using UserPassesTestMixinin order to check if user is part of it but I'm getting an error of Generic detail view createjob must be called with either an object pk or a slug in the URLconf.
I just need someone to point me to the right direction or give me a hint.I also tried, this:
class createjob (LoginRequiredMixin,CreateView):
model = Job
fields = ['member','title', 'description', 'file']
def form_valid(self,form):
form.instance.manager=self.request.user
return super().form_valid(form)
But it's giving me an error of Cannot assign "<SimpleLazyObject: <User: edlabra>>": "Job.manager" must be a "Manager" instance.
Here's my views.py:
from django.shortcuts import render
from django.contrib.auth.mixins import LoginRequiredMixin, UserPassesTestMixin
from django.views.generic import ListView, CreateView
from .models import Job, Member
from profiles.models import User
from django.contrib.auth.decorators import login_required
# Create your views here.
class jobs(LoginRequiredMixin,ListView):
model = Job
template_name = 'users/user_jobs.html'
context_object_name = 'jobs'
def get_queryset(self):
return Job.objects.filter(member__member=self.request.user)
class createdjobs(LoginRequiredMixin,ListView):
model = Job
template_name = 'users/manager_jobs.html'
context_object_name = 'jobs'
def get_queryset(self):
return Job.objects.filter(manager__manager=self.request.user)
class teamview(LoginRequiredMixin,ListView):
model = Member
template_name = 'users/manage_team.html'
context_object_name = 'members'
def get_queryset(self):
return Member.objects.filter(manager__manager=self.request.user)
class createjob (LoginRequiredMixin,UserPassesTestMixin,CreateView):
model = Job
fields = ['member','title', 'description', 'file']
def test_func(self):
job=self.get_object()
if self.request.user == Job.manager:
return True
return False
Models.py:
from django.db import models
from profiles.models import User
# Create your models here.
class Points (models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
points = models.IntegerField(default=0, null=False)
def __str__(self):
return self.user.username
class Profile (models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
image = models.ImageField(default='default.png',upload_to='profile_pics')
def __str__(self):
return f'{self.user.username}Profile'
class Manager (models.Model):
name = models.CharField(max_length=30, blank=True, null=True)
manager = models.ForeignKey(User,on_delete=models.CASCADE)
def __str__(self):
return self.name
class Member (models.Model):
name = models.CharField(max_length=30, blank=True, null=True)
manager = models.ForeignKey(Manager, on_delete=models.CASCADE)
member = models.ForeignKey(User,on_delete=models.CASCADE)
def __str__(self):
return self.name
class Job (models.Model):
manager = models.ForeignKey(Manager, on_delete=models.CASCADE)
member = models.ForeignKey(Member, on_delete=models.CASCADE)
title = models.CharField(max_length=30, blank=False, null=False)
description = models.TextField()
datePosted = models.DateTimeField (auto_now = True)
file = models.FileField(null=True, blank=True,upload_to='job_files')
def __str__(self):
return self.title
assign user from manager table.
def form_valid(self,form):
form.instance.manager=Manager.objects.get(manager=self.request.user)
return super().form_valid(form)
I am trying to make a website where people can find restaurants and menu items based on their pickiness. Currently I am trying to do it so when I add something to the restaurants through forms I have it associated to an user but when I submit the form I get this error:
IntegrityError
NOT Null constraint failed: restaurants_restaurantlocation.owner_id
Here is my forms.py:
from django import forms
from .models import RestaurantLocation
from .validators import validate_category
class RestaurantCreateForm(forms.Form):
name = forms.CharField()
location = forms.CharField(required = False)
category = forms.CharField(required = False)
def clean_name(self):
name = self.cleaned_data.get("name")
if name == "Hello":
raise forms.ValidationError("This is an invalid name. You stubid boy.")
return name
class RestaurantLocationCreateForm(forms.ModelForm):
#email = forms.EmailField()
#category = forms.CharField(validators = [validate_category], required = False)
class Meta:
model = RestaurantLocation
fields = [
"name",
"location",
"category"
]
def clean_name(self):
name = self.cleaned_data.get("name")
if name == "Hello":
raise forms.ValidationError("This is an invalid name. You stubid boy.")
return name
My models.py:
from django.conf import settings
from django.db import models
from django.db.models.signals import pre_save, post_save
from .utils import unique_slug_generator
from .validators import validate_category
# Create your models here.
User = settings.AUTH_USER_MODEL
class RestaurantLocation(models.Model):
owner = models.ForeignKey(User)
name = models.CharField(max_length=120)
location = models.CharField(max_length=120, null=True, blank=True)
category = models.CharField(max_length=120, null=True, blank=True, validators= [validate_category])
slug = models.SlugField(null=True, blank=True)
timestamp = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
def __str__(self):
return self.name
#property
def title(self):
return self.name #obj.title
def rl_pre_save_reciever(sender, instance, *args, **kwargs):
instance.category = instance.category.capitalize()
if not instance.slug:
instance.slug = unique_slug_generator(instance)
pre_save.connect(rl_pre_save_reciever, sender=RestaurantLocation)
My views.py:
from django.db.models import Q
from django.http import HttpResponse, HttpResponseRedirect
from django.shortcuts import render, get_object_or_404
from django.views import View
from django.views.generic import TemplateView, ListView, DetailView, CreateView
from django.utils.datastructures import MultiValueDictKeyError
from .forms import RestaurantCreateForm, RestaurantLocationCreateForm
from .models import RestaurantLocation
# Create your views here
def restaurant_createview(request):
form = RestaurantLocationCreateForm(request.POST or None)
errors = None
if form.is_valid():
# customise
# like a pre save
form.save()
# like a post save
return HttpResponseRedirect("/restaurants/")
if form.errors:
errors = form.errors
template_name = "restaurants/form.html"
context = {"form" : form, "errors" : errors}
return render(request, template_name, context)
def restaurant_listview(request):
template_name = "restaurants/restaurants_list.html"
queryset = RestaurantLocation.objects.all()
context = {
"object_list": queryset
}
return render(request, template_name, context)
class RestaurantListView(ListView):
def get_queryset(self):
slug = self.kwargs.get("slug")
if slug:
queryset = RestaurantLocation.objects.filter(
Q(category__iexact = slug) |
Q(category__icontains = slug)
)
else:
queryset = RestaurantLocation.objects.all()
return queryset
class RestaurantDetailView(DetailView):
queryset = RestaurantLocation.objects.all()
class RestaurantCreateView(CreateView):
form_class = RestaurantLocationCreateForm
template_name = "restaurants/form.html"
success_url = "/restaurants/"
If you need any other piece of code please ask, thank you
Looking at your RestaurantLocation model, you have a foreign key into the User table:
class RestaurantLocation(models.Model):
owner = models.ForeignKey(User)
By default this can't be empty (this is what "NOT null constraint" means). And indeed it looks like your form does not do anything to fill in a restaurant owner, so you will get a database constraint error when you try to commit.
"This is an invalid name. You stubid boy."
Not a very nice thing to say to your users.
I am trying to filter data according to selected fields in forms. I have created a model and imported it to forms.py
from django import forms
from django.forms import ModelForm
from .models import Student_Detail, Student_Education
class StudentDetailForm(forms.ModelForm):
class Meta:
model = Student_Detail
fields = ['name', 'surname' , 'sex', 'birth_date', 'area',
'state' ,
'city' , 'pincode']
def to_python(self, value):
if not value:
return []
return value.split(',')
and my models are
`
from __future__ import unicode_literals
from django.db import models
# Create your models here.
class State(models.Model):
state = models.CharField(max_length=50)
slug = models.SlugField(unique=True, null=True, blank=True)
def __str__(self):
return self.state
class City(models.Model):
state = models.ForeignKey('State', on_delete=models.CASCADE)
city = models.CharField(max_length=70)
slug = models.SlugField(unique=True, null=True, blank=True)
def __str__(self):
return self.city
class Student_Detail(models.Model):
name = models.CharField(max_length=50)
surname = models.CharField(max_length=50, blank=True, null=True)
sex = models.CharField(max_length=4)
birth_date = models.DateTimeField()
area = models.CharField(max_length=100, blank=True, null=True)
state = models.ForeignKey('State', on_delete=models.CASCADE)
city = models.ForeignKey('City', on_delete=models.CASCADE)
pincode = models.IntegerField()
slug = models.SlugField(unique=True, null=True, blank=True)
def __str__(self):
return self.name + " " + self.surname`
Now I want to filter cities in form according to a state selected in the same form.
My View is
from django.shortcuts import render
from .models import City, Student_Detail, State, Student_Education
from django.http import HttpResponseRedirect
from .forms import StudentDetailForm, StudentEducationForm
def get_student_data(request):
if request.method == 'POST':
form_detail = StudentDetailForm(request.POST)
if form_detail.is_valid():
form_detail.save()
return HttpResponseRedirect('/home/')
else:
form_detail = StudentDetailForm()
return render(request,'home/form.html/',
{'form_detail':form_detail, })
def thanks(request):
template_name = 'home/thanks.html/'
return render(request, template_name, {})
I am also trying to enter data in two different models using forms but some thing getting wrong while saving data in two different models at view layer.
Kindly help.
Access your form fields like this myForm.fields['name'] and filter Student_Detail
from django.shortcuts import render
from django.http import HttpResponse
def student_view(request):
# your business logic or whatever goes here
if form.is_valid():
students = Student_Detail.objects.filter(name=myForm.fields['name'],
surname=myForm.fields['surname'])
return render(request, 'student_view.html', {data=students})