I have seen many tutorials on this, (I am new to Django) and the only issue I could find was raise form.Validation("...") was not rendering on my HTML template and did not stop the form from submitting. I tried many options including AI yet I was still running into the same problems. If I have made a silly mistake please point it out so I know for next time, this code is just a project of mine so I can learn how to code Django. HTML: <form id="form" action="" method="post" name="form"> {% csrf_token %} <div class="input-control"> {% if form.non_field_errors %} <div class="error">{{ form.non_field_errors }}</div> {% endif %} {% if form.errors %} <div class="error">{{ form.errors }}</div> {% endif %} <div class="username"> <label for="{{ form.username.id_for_label }}" class="label">{{ form.username.label }}</label> {{ form.username }} <!-- Render the input field --> {% for error in form.username.errors %} <div class="error">{{ error }}</div> {% endfor %} </div> <div class="email"> <label for="{{ form.email.id_for_label }}" class="lemail">{{ form.email.label }}</label> {{ form.email }} {% for error in form.email.errors %} <div class="error">{{ error }}</div> {% endfor %} </div> <div class="password"> <label for="{{ form.password.id_for_label }}" class="label">{{ form.password.label }}</label> {{ form.password }} {% for error in form.password.errors %} <div class="error">{{ error }}</div> {% endfor %} </div> <div class="repassword"> <label for="{{ form.repassword.id_for_label }}" class="label">{{ form.repassword.label }}</label> {{ form.repassword }} {% for error in form.repassword.errors %} <div class="error">{{ error }}</div> {% endfor %} </div> <button id="nextButton" class="nextButton" type="submit"> <span class="material-symbols-outlined">arrow_circle_right</span> </button> </div> </form> Forms.py: from django import forms from django.contrib.auth.models import User class JoinForm(forms.Form): username = forms.CharField( validators=['clean_username'], widget=forms.TextInput(attrs={ 'id': "usernameId", 'name': "username", 'type': "text", 'placeholder': "username", 'autocomplete': "username", 'maxlength': 64, 'required': True, }), label='Username' ) email = forms.EmailField( validators=['clean_email'], widget=forms.EmailInput(attrs={ 'id': "emailId", 'name': "email", 'type': "text", 'placeholder': "email" , 'autocomplete': "email", 'maxlength': 256, 'required': True, }), label='Email' ) password = forms.CharField( validators=['clean_password'], widget=forms.PasswordInput(attrs={ 'id': "passwordId", 'name': "password", 'type': "password", 'placeholder': "password", 'autocomplete': "new-password", 'maxlength': 127, 'required': True, }), label='Password' ) repassword = forms.CharField( validators=['clean_repassword'], widget=forms.PasswordInput(attrs={ 'id': "repasswordId", 'name': "repassword", 'type': "password", 'placeholder': "re-confirm password", 'maxlength': 127, 'required': True, }), label='Password' ) def clean_username(self): print("Cleaning username") username = self.cleaned_data.get('username') if username and User.objects.filter(username=username).exists(): raise forms.ValidationError("Username already exists.") return username def clean_email(self): print("Cleaning email") email = self.cleaned_data.get('email') if email and '@example.com' in email: raise forms.ValidationError("Email from example.com is not allowed.") elif email and User.objects.filter(email=email).exists(): raise forms.ValidationError("Email already exists.") return email def clean_password(self): print("Cleaning password") password = self.cleaned_data.get('password') if password and len(password) < 8: raise forms.ValidationError("Password must be at least 8 characters") return password def clean_repassword(self): print("Cleaning repassword") repassword = self.cleaned_data.get('repassword') password = self.cleaned_data.get('password') if repassword != password: raise forms.ValidationError("Passwords do not match") return repassword views.py: from django.shortcuts import render, redirect from .forms import JoinForm from django.contrib.auth import login, logout from django.http import HttpResponse, HttpRequest, HttpResponseRedirect, JsonResponse from django.contrib.auth.models import User from django.contrib.auth.views import LogoutView, LoginView from django.urls import reverse_lazy import json def index(request): return render(request, 'Index.html') def create_user(request): # if User.objects.exists(): # return redirect('index') if request.method == 'POST': form = JoinForm(request.POST) if form.is_valid(): # Extract cleaned data username = form.cleaned_data['username'] password = form.cleaned_data['password'] email = form.cleaned_data['email'] # Create the user user = User.objects.create_user(username=username, password=password, email=email) user.save() # Log the user in login(request, user) # Redirect to success page return redirect('send_call') else: return redirect('create_user') else: form = JoinForm() # For GET requests, render the Join.html page return render(request, 'Join.html', {'form': form}) Continue reading...