A simple Django view that handles both GET and POST requests 2

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Tags: python

Using Model

Define your model:

#In course/models.py:
from django.db import models

class Message(models.Model):
    content = models.TextField()
    created_at = models.DateTimeField(auto_now_add=True)  # Optional: to record when the message was created

#python3 manage.py makemigrations
#python3 manage.py migrate

Convert your form to a ModelForm:

#In course/forms.py:
from django import forms
from .models import Message

class MessageModelForm(forms.ModelForm):
    class Meta:
        model = Message
        fields = ['content']
        widgets = {
            'content': forms.Textarea(attrs={'placeholder': 'Enter your message'})
        }

Update your view to use the ModelForm and save messages:

#In course/views.py:
from django.shortcuts import render, redirect
from .forms import MessageModelForm

def message_view(request):
    if request.method == 'POST':
        form = MessageModelForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect('course:message_view')  # Redirect back to the same view or another as per your choice
    else:
        form = MessageModelForm()

    return render(request, 'course/message_form.html', {'form': form})

#course/views.py for retrieving and displaying the messages that have been saved in the database
from django.shortcuts import render, redirect
from .forms import MessageModelForm
from .models import Message  # Import the Message model

def message_view(request):
    if request.method == 'POST':
        form = MessageModelForm(request.POST)
        if form.is_valid():
            form.save()
            return redirect('course:message_view')  # Redirect back to the same view
    else:
        form = MessageModelForm()

    # Retrieve all saved messages
    messages = Message.objects.all()

    return render(request, 'course/message_form.html', {'form': form, 'messages': messages})

# course/views.py for saving and displaying the uppercase of the input
from django.shortcuts import render, redirect
from .forms import MessageModelForm
from .models import Message

def message_view(request):
    if request.method == 'POST':
        form = MessageModelForm(request.POST)
        if form.is_valid():
            content = form.cleaned_data['content'].upper()  # Get and uppercase the input
            Message.objects.create(content=content)  # Save the uppercase content
            return redirect('course:message_view')
    else:
        form = MessageModelForm()

    messages = Message.objects.all()

    return render(request, 'course/message_form.html', {'form': form, 'messages': messages})

The HTML remains almost the same:

#In templates/course/message_form.html:
<!DOCTYPE html>
<html>
<head>
    <title>Message Form</title>
</head>
<body>
    <form method="post" action="{% url 'course:message_view' %}">
        {% csrf_token %}

        <!-- Display errors -->
        {{ form.content.errors }}

        <!-- Display textarea -->
        {{ form.content }}

        <br>
        <button type="submit">Send Message</button>
    </form>
</body>
</html>

<!-- templates/course/message_form.html for retrieving and displaying the messages that have been saved in the database -->
<!DOCTYPE html>
<html>
<head>
    <title>Message Form</title>
</head>
<body>
    <form method="post" action="{% url 'course:message_view' %}">
        {% csrf_token %}

        {{ form.content.errors }}
        {{ form.content }}

        <br>
        <button type="submit">Send Message</button>
    </form>

    <!-- Display saved messages -->
    <h2>Saved Messages:</h2>
    <ul>
        {% for message in messages %}
            <li>{{ message.content }} - {{ message.created_at }}</li>
        {% endfor %}
    </ul>
</body>
</html>

<!-- templates/course/message_form.html with predefined templates -->
{% extends "base.html" %}

{% block title %}Message Form{% endblock %}

{% block content %}
<div class="container">
  <h1 class="text-center">Message Form</h1>
  <form method="post" action="{% url 'course:message_view' %}">
    {% csrf_token %}

    {{ form.content.errors }}
    {{ form.content }}

    <br>
    <button type="submit" class="btn btn-primary">Send Message</button>
  </form>

  <h2 class="text-center">Saved Messages:</h2>
  <ul class="list-group">
    {% for message in messages %}
      <li class="list-group-item">{{ message.content }} - {{ message.created_at }}</li>
    {% endfor %}
  </ul>
</div>
{% endblock %}

Ensure your URLs are still set up properly:

#In course/urls.py:
from django.urls import path
from . import views

urlpatterns = [
    path('message/', views.message_view, name='message_view'),
    # ... your other urls
]

With these changes:

Messages submitted through the form will be saved in the Message model in the database.
After a successful form submission, the user will be redirected back to the message form view. Adjust this redirection as needed.
The form still uses a textarea for message content input.

Not Using Model

    # in course/forms.py
    from django import forms

    class MessageForm(forms.Form):
        content = forms.CharField(widget=forms.Textarea(attrs={'placeholder': 'Enter your message'}))

    # in course/views.py
    from django.shortcuts import render, redirect
    from .forms import MessageForm

    def message_view(request):
        if request.method == 'POST':
            form = MessageForm(request.POST)
            if form.is_valid():
                # Here you can process the data.
                # For now, I'm just redirecting as an example.
                return redirect('some-other-view-or-url-name')
        else:
            form = MessageForm()

        return render(request, 'course/message_form.html', {'form': form})

    <!-- in templates/course/message_form.html -->
    <!DOCTYPE html>
    <html>
    <head>
        <title>Message Form</title>
        <!-- Optional: Add a link to a CSS stylesheet for styling. -->
    </head>
    <body>
        <form method="post" action="{% url 'course:message_view' %}">
            {% csrf_token %}

            <!-- Display errors -->
            {{ form.content.errors }}

            <!-- Display textarea -->
            {{ form.content }}

            <br>
            <button type="submit">Send Message</button>
        </form>
    </body>
    </html>

    # in course/urls.py
    from django.urls import path
    from . import views

    urlpatterns = [
        path('message/', views.message_view, name='message_view'),
        # ... your other urls
    ]

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