Initializing foriegnkey in CRUD operation - django

Question

i am working on a project to manage animal farm. The backend is with django and the frot end is with bootstrap. The project has several apps as in django documentation.
views.py
from django.shortcuts import render,redirect, get_object_or_404
from django.http import JsonResponse
from django.template.loader import render_to_string
from django.urls import reverse_lazy
from livestockrecords.models import *
from .models import *
from .forms import *
from .models import *
from .forms import *
def save_feedin_form(request, form, template_name):
data = dict()
if request.method == 'POST':
if form.is_valid():
form.save()
data['form_is_valid'] = True
livestocks = Livestock.objects.all()
context ={
'livestocks': livestocks
}
data['html_livestock_list'] =
render_to_string('includes/_list_feeding.html', context)
else:
data['form_is_valid'] = False
context = {'form': form}
data['html_form'] = render_to_string(template_name, context, request=request)
return JsonResponse(data)
def feeding_add(request, pk):
livestocks = get_object_or_404(Livestock, pk=pk)
data = dict()
if request.method == 'POST':
form = FeedingForm(request.POST , initial={'livestock': pk})
else:
form = FeedingForm(initial={'livestock': livestocks})
return save_feedin_form(request, form, 'includes/_add_feeding.html')
models.py
from django.db import models
from livestockrecords.models import Livestock
# Create your models here.
class Addmedication(models.Model):
MEDICATIONTYPE = (
('Drugs', 'Drugs'),
('Vaccination', 'Vaccination'),
)
name = models.CharField(max_length=200, null=True)
medicationType = models.CharField(max_length=200, null=True, choices= MEDICATIONTYPE)
def __str__(self):
return self.name
class Adddisease(models.Model):
name = models.CharField(max_length=200, null=True)
description = models.TextField(null=True)
def __str__(self):
return self.name
class DailyRecords(models.Model):
livestock = models.ForeignKey(Livestock, null=True, on_delete = models.SET_NULL)
dateAdded =models.DateTimeField(auto_now_add=True, null=True)
datepurchased=models.DateField(auto_now_add=False, null=True)
class Meta:
abstract = True
class Mortality(DailyRecords):
qty = models.IntegerField()
cause = models.TextField(null=True)
class Medication(DailyRecords):
medication = models.ForeignKey(Addmedication, null=True, on_delete = models.SET_NULL)
disease = models.ForeignKey(Adddisease, null=True, on_delete = models.SET_NULL)
class Feeding(DailyRecords):
feedname = models.CharField(max_length=200, null=True)
qty = models.FloatField()
forms.py
from django import forms
from django.forms import ModelForm
from .models import *
class FeedingForm(ModelForm):
class Meta:
model = Feeding
fields = ['livestock','datepurchased', 'feedname', 'qty']
labels = {
'livestock':'',
'datepurchased': '',
'feedname': '',
'qty': '',
}
widgets = {
'livestock': forms.HiddenInput(),
'datepurchased':forms.TextInput( attrs={
'placeholder': 'Date Added *',
'class': 'form-control',
'type': 'date',
}),
'feedname':forms.TextInput(attrs = {
'placeholder': 'feed name *',
'class': 'form-control'}),
'qty':forms.TextInput(attrs = {
'placeholder': 'Quantity of feed in kg *',
'class': 'form-control'}),
}
class mortalityForm(ModelForm):
class Meta:
model = Mortality
fields = ['livestock','datepurchased', 'qty', 'cause']
labels = {
'livestock':'',
'datepurchased': '',
'qty': '',
'cause': '',
}
widgets = {
'livestock': forms.HiddenInput(),
'datepurchased':forms.TextInput( attrs={
'placeholder': 'Date Added *',
'class': 'form-control',
'type': 'date',
}),
'cause':forms.TextInput(attrs = {
'placeholder': 'Cause of Mortality *',
'class': 'form-control'}),
'qty':forms.TextInput(attrs = {
'placeholder': 'Number *',
'class': 'form-control'}),
}
class MedicationForm(ModelForm):
class Meta:
model = Medication
fields = ['livestock','datepurchased', 'medication', 'disease']
labels = {
'livestock':'',
'datepurchased': '',
'medication': '',
'disease': '',
}
widgets = {
'livestock': forms.HiddenInput(),
'datepurchased':forms.TextInput( attrs={
'placeholder': 'Date Added *',
'class': 'form-control',
'type': 'date',
}),
'medication':forms.Select(attrs = {
'placeholder': 'Drug name *',
'class': 'form-control'}),
'disease':forms.Select(attrs = {
'placeholder': 'Disease Name *',
'class': 'form-control'}),
}
urls.py
from django.urls import path
from . import views
urlpatterns = [
# livestockrecords
path('', views.daily_home, name = "daily-home"),
path('daily-feeding/<str:pk>/', views.feeding_add, name = "daily-feeding"),
]
In the view.py, the form is an ajax form. it display but when i hit the add button it will not capture the foriegnkey.
When i run the code i get this: error raise e.class(
ValueError: Field 'id' expected a number but got 'None'.
Please i need help