I am currently using Django and python to create a web app to take meter readings for my company.
I am receiving this error (Title) and I don't know what is causing it. I have
Urls.py:
urlpatterns = [ #Operational URLS path('admin/', admin.site.urls), path('accounts/', include('django.contrib.auth.urls')), path("",include("accounts.urls")), path('home/' , views.home, name='home'), #Complexes #AVONLEA path('avn', views.AvonleaView, name='Avonlea'), path('cavn', views.currentavonleas, name='currentAvonleas'), path('Avonleacsv', views.Avonleacsv, name='Avonleacsv'), path('meter_readings/avonlea/<int:avonleas_pk>', views.viewavonlea, name='viewavonlea' ), path('meter_readings/avonlea/<int:avonleas_pk>/delete', views.deleteavonlea, name='deleteavonlea' ), Views.py
from django.shortcuts import render, redirect, get_object_or_404 from django.http import HttpResponse from .forms import AvonleaForm from .models import AvonleaClass from django.contrib import messages from django.views import View #Operational def home(request): return render(request, 'meter_readings/home.html' ) # Complexes #AVONLEA # # # class AvonleaView( View): def get(self,request): created_nums= AvonleaClass.objects.all().values('unitNumber') Aprev = AvonleaClass.objects.all().order_by('-unitDateEntered') previousReading = Aprev[1].newReading # created_nums= AvonleaClass.objects.all() print(created_nums , previousReading) created_nums =[int(i['unitNumber']) for i in created_nums] print(created_nums , previousReading) form = AvonleaForm() return render(request,"meter_readings/avonlea.html",{'form':form , 'created_nums':created_nums , 'name':name, 'previousReading' : previousReading }) def post(self,request): created_nums= AvonleaClass.objects.all().values_list('unitNumber') print(created_nums) form = AvonleaForm(request.POST) if form.is_valid(): form.save() return redirect('unt-url' , name ) messages.success(request , 'creates successfully ') else: return render(request, 'meter_readings/avonlea.html', {'form': form , created_nums:created_nums }) def currentavonleas(request): avonleas = AvonleaClass.objects.all() return render(request, 'meter_readings/currentavonleas.html', {'avonleas':avonleas}) def viewavonlea(request, avonleas_pk): avonlea = get_object_or_404(AvonleaClass, pk=avonleas_pk) if request.method == 'GET': form = AvonleaForm(instance=avonlea) return render(request, 'meter_readings/viewavonleas.html', {'avonlea': avonlea, 'form':form}) else: try: form = AvonleaForm(request.POST, instance=avonlea) form.save() return redirect('Avonlea') except ValueError: return render(request, 'meter_readings/viewavonleas.html', {'avonlea': avonlea, 'form':form, 'error':'Bad info'}) def deleteavonlea(request, avonleas_pk): avonlea = get_object_or_404(AvonleaClass, pk=avonleas_pk) if request.method == 'POST': avonlea.delete() return redirect('Avonlea') import csv def Avonleacsv(request): data =AvonleaClass.objects.all() response = HttpResponse(content_type='text/csv') response['Content-Disposition'] = 'attachment; filename="saved_file.csv"' writer = csv.writer(response) writer.writerow(['Unit', 'Number of Units' ]) for avonleaclass in data: writer.writerow([ avonleaclass.unitNumber, avonleaclass.newReading, ]) return response Models.py
from django.db import models from django.contrib.auth.models import User from django.urls import reverse AvonleaUnits = [tuple([x,x]) for x in range(1,73)] class AvonleaClass(models.Model): unitNumber = models.CharField(max_length=2 , default='1') newReading = models.IntegerField( blank=True, null=True) difference = models.IntegerField(blank=True, null=True) unitNotes = models.TextField(blank=True) unitDateEntered = models.DateTimeField(auto_now_add=True, null=True) unitProblem = models.BooleanField(default=False) image = models.ImageField(blank=True, null=True) def __str__(self): return ('Unit ' + self.unitNumber) Forms.py from django.forms import ModelForm from .models import AvonleaClass from django import forms AvnUnits = [tuple([x,x]) for x in range(1,73)] class AvonleaForm(ModelForm): unitNumber = forms.ChoiceField(choices= AvnUnits) class Meta: model = AvonleaClass fields = ['unitNumber','newReading','difference', 'unitNotes','unitProblem' , 'image'] widgets = { 'unitNotes': forms.TextInput(attrs={'size': 10}), 'unitReading': forms.IntegerField(), 'diffrence': forms.IntegerField(), } Admin.py
from django.contrib import admin from .models import AvonleaClass class AvonleaAdmin(admin.ModelAdmin): readonly_fields = ('unitDateEntered',) admin.site.register(AvonleaClass, AvonleaAdmin) class Birchleigh_ViewAdmin(admin.ModelAdmin): readonly_fields = ('unitDateEntered',) Avonlea.html
<!-- CSS only --> <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous"> {% extends 'meter_readings/base.html' %} {% block content %} <!-- CSS only --> <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-+0n0xVW2eSR5OomGNYDnhzAbDsOXxcvSN1TPprVMTNDbiYZCxYbOOl7+AMvyTG2x" crossorigin="anonymous"> <div class="container"> <h1>{{name}} Meter Readings</h1> {% for unit_number in form.unitNumber %} <h6>{{ error }}</h6> <form class="form-group mt-4" method="post" {% if unit_number.data.value in created_nums %} style="background-color: rgb(231, 224, 224); " {% endif %} > {% csrf_token %} <div class="container"> <div class="row mb-3"> <div class="col"> {{ unit_number.data.value}} </div> <input type="hidden" name="unitNumber" value="{{unit_number.data.value}}"> <div class="col" id="prev{{unit_number.data.value}}" > {{ previousReading }} </div> <div class="col" id="readings{{unit_number.data.value}}"> {{ form.newReading }} </div> <div class="col" id="difference{{unit_number.data.value}}"> {{ form.difference }} </div> <div class="col"> {{ form.unitNotes }} </div> <div class="col"> {{ form.unitProblem }} </div> <div class="col" id="img{{unit_number.data.value}}"> {{ form.image }} </div> <div class="col"> <button class="btn btn-success " type="submit" {% if unit_number.data.value in created_nums %} disabled {% endif %} > Save</button> </div> </div> </div> <script> document.getElementById("img{{unit_number.data.value}}").firstElementChild.disabled = true document.getElementById("difference{{unit_number.data.value}}").firstElementChild.disabled = true var last = document.getElementById('readings{{unit_number.data.value}}'); last.addEventListener('input' , (e)=>{ last = e.target.value var first = document.getElementById('prev{{unit_number.data.value}}').firstElementChild.value; var diff= document.getElementById('difference{{unit_number.data.value}}').firstElementChild.value= parseInt(last) - parseInt(first); if (diff <= 0){ console.log(diff) console.log("-ve") document.getElementById("difference{{unit_number.data.value}}").firstElementChild.style.border="2px solid red"; document.getElementById("img{{unit_number.data.value}}").firstElementChild.disabled=false } else{ document.getElementById("difference{{unit_number.data.value}}").firstElementChild.style.border="2px solid "; document.getElementById("img{{unit_number.data.value}}").firstElementChild.disabled=true console.log("+ve") } }) </script> </form> {% endfor %} <style> .error { border:2px solid red; } </style> <form method="POST", action="{% url 'currentAvonleas' %}"> {% csrf_token %} <button type="submit">View all Avonlea readings</button> </form> <form method="POST", action="{% url 'Avonleacsv' %}"> {% csrf_token %} <button type="submit">Export readings to Excel</button> </form> {% endblock %} <br> <br> <br> home.html:
<link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-wEmeIV1mKuiNpC+IOBjI7aAzPcEZeedi5yW5f2yOq55WWLwNGmvvx4Um1vskeMj0" crossorigin="anonymous"> {% extends 'meter_readings/base.html' %} {% block content %} {% csrf_token %} <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-wEmeIV1mKuiNpC+IOBjI7aAzPcEZeedi5yW5f2yOq55WWLwNGmvvx4Um1vskeMj0" crossorigin="anonymous"> <div class="container"> <div class="jumbotron"> <h1 class="display-5 text-center" align-items-center>Meter Reading Application</h1> <h3>Individual Unit Readings</h3> </div> <div class="container"> <a href="{% url 'Avonlea' %}" class="btn btn-info" >Avonlea </a> <br> <br> </div> </div> {% endblock %} The exact error that is given :
TypeError at /avn init() takes 1 positional argument but 2 were given Request Method: GET Request URL: http://localhost:8000/avn Django Version: 3.2 Exception Type: TypeError Exception Value:
init() takes 1 positional argument but 2 were given Exception Location: C:\Users\KylePOG\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\handlers\base.py, line 181, in _get_response Python Executable: C:\Users\KylePOG\AppData\Local\Programs\Python\Python39\python.exe Python Version: 3.9.4 Python Path:
['C:\Users\KylePOG\Desktop\meter-reading', 'C:\Users\KylePOG\AppData\Local\Programs\Python\Python39\python39.zip', 'C:\Users\KylePOG\AppData\Local\Programs\Python\Python39\DLLs', 'C:\Users\KylePOG\AppData\Local\Programs\Python\Python39\lib', 'C:\Users\KylePOG\AppData\Local\Programs\Python\Python39', 'C:\Users\KylePOG\AppData\Local\Programs\Python\Python39\lib\site-packages'] Server time: Sun, 30 May 2021 19:14:46 +0000 Traceback Switch to copy-and-paste view C:\Users\KylePOG\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\handlers\exception.py, line 47, in inner response = get_response(request) … ▶ Local vars C:\Users\KylePOG\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\handlers\base.py, line 181, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) … ▶ Local vars
