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Django: Registration Form → Database → Admin → App View

Goal:
User fills registration form → data stored in DB →
visible in Django Admin →
retrievable via another route in the app

This is how 90% real Django apps work.

1️⃣ Define the Model (Data Structure)

👉 First rule: No form without model

core/models.py

from django.db import models

class UserRegistration(models.Model):
    full_name = models.CharField(max_length=100)
    email = models.EmailField(unique=True)
    phone = models.CharField(max_length=15)
    age = models.IntegerField()
    created_at = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return self.full_name

Why this matters

  • This defines table structure

  • Django ORM will handle SQL automatically

2️⃣ Apply Migrations (DB Sync)

python manage.py makemigrations
python manage.py migrate

❗If this step is skipped → nothing works.

3️⃣ Register Model in Admin Dashboard

core/admin.py

from django.contrib import admin
from .models import UserRegistration

@admin.register(UserRegistration)
class UserRegistrationAdmin(admin.ModelAdmin):
    list_display = ('full_name', 'email', 'phone', 'age', 'created_at')
    search_fields = ('full_name', 'email')

Result

  • Clean table view

  • Search enabled

  • No extra coding

👉 Show students /admin now.

4️⃣ Create ModelForm (Bridge Between HTML & Model)

core/forms.py

from django import forms
from .models import UserRegistration

class RegistrationForm(forms.ModelForm):
    class Meta:
        model = UserRegistration
        fields = ['full_name', 'email', 'phone', 'age']

Why ModelForm?

  • Auto validation

  • Auto save

  • Prevents dirty data

5️⃣ Create Registration View (Store Data)

core/views.py

from django.shortcuts import render, redirect
from .forms import RegistrationForm

def register_user(request):
    form = RegistrationForm(request.POST or None)

    if request.method == "POST":
        if form.is_valid():
            form.save()
            return redirect('user_list')

    return render(request, 'register.html', {'form': form})

Teaching point

  • request.POST → incoming data

  • form.is_valid() → validation

  • form.save() → DB insert

6️⃣ Create HTML Form (Frontend)

templates/register.html

<!DOCTYPE html>
<html>
<head>
    <title>Registration</title>
</head>
<body>
    <h2>User Registration</h2>

    <form method="POST">
        {% csrf_token %}
        {{ form.as_p }}
        <button type="submit">Register</button>
    </form>
</body>
</html>

Explain clearly

  • csrf_token → security (mandatory)

  • form.as_p → auto-rendered fields

7️⃣ Create Data Retrieval View (Read from DB)

core/views.py

from .models import UserRegistration

def user_list(request):
    users = UserRegistration.objects.all().order_by('-created_at')
    return render(request, 'user_list.html', {'users': users})

ORM in action

  • No SQL

  • Clean Python code

  • Production safe

8️⃣ Display Stored Data in App UI

templates/user_list.html

<!DOCTYPE html>
<html>
<head>
    <title>Registered Users</title>
</head>
<body>
    <h2>Registered Users</h2>

    <table border="1">
        <tr>
            <th>Name</th>
            <th>Email</th>
            <th>Phone</th>
            <th>Age</th>
        </tr>

        {% for user in users %}
        <tr>
            <td>{{ user.full_name }}</td>
            <td>{{ user.email }}</td>
            <td>{{ user.phone }}</td>
            <td>{{ user.age }}</td>
        </tr>
        {% empty %}
        <tr>
            <td colspan="4">No records found</td>
        </tr>
        {% endfor %}
    </table>
</body>
</html>

9️⃣ URL Routing (Connect Everything)

core/urls.py

from django.urls import path
from .views import register_user, user_list

urlpatterns = [
    path('register/', register_user, name='register'),
    path('users/', user_list, name='user_list'),
]

🔁 Full Flow

User fills form
      ↓
POST request sent
      ↓
Form validates data
      ↓
Model saves to DB
      ↓
Admin dashboard updates
      ↓
App route fetches data
      ↓
HTML renders users