How to show success message in django

How to display flash message in django ?

In django, the messages framework allows you to temporarily store messages and it is automatically destroyed after it is displayed once.

There are 5 level of displaying messages 

  1. messages.debug(request, '%s SQL statements were executed.' % count)
  2. messages.info(request, 'Three credits remain in your account.')
  3. messages.success(request, 'Profile details updated.')
  4. messages.warning(request, 'Your account expires in three days.')
  5. messages.error(request, 'Document deleted.')

For more details info, you can visit the documentation here 

Now let us see how to use the messages with our example :

Open the views.py file where we had written the code to insert data into database and add the message code as shown below:

def addProduct(request):
    form = addProductForm()

    if request.method == 'POST':
        form = addProductForm(request.POST)
        if form.is_valid():
            form.save()
            messages.success(request, "Data inserted successfully")
        else :
            messages.warning(request, "Data was not inserted")
    content = {'form':form}
    return render(request, 'accounts/addprod.html', content)

To display the message in the add product page, just iterate the messages using a for loop. The messages is like a temporary global storage so you don't have to pass it with the content in the render(). You can print the message as shown below:

{% extends 'accounts/layouts/maintemp.html' %}

{% load static %}

{% block title %}
Add Products
{% endblock title %}

{% block content %}
<div class="container">
    <div class="row">
        <div class="col-md-12">
            {% for msg in messages %}
                {{msg}}
            {% endfor %}    
            <h1>All Products </h1>
            <form action="" method='POST'>
                {% csrf_token %}
                <table class="table table-bordered table-striped">
                    <thead>
                        <tr>
                            <th>ID</th>
                            <th>Name</th>
                            <th>Price</th>
                            <th>Category</th>
                            <th>Action</th>
                        </tr>
                    </thead>
                    <tbody>
                        {% for x in form %}
                        <tr>
                            <td>{{ x.id }}</td>
                            <td>{{ x.name }}</td>
                            <td>{{ x.price }}</td>
                            <td>{{ x.category }}</td>
                            <td>
                                <a href="{% url 'edit' x.id %}" class="btn btn-primary btn-sm">Edit</a>
                                <a href="{% url 'delete' x.id %}" class="btn btn-danger btn-sm">Delete</a>
                            </td>
                        </tr>
                        {% endfor %}
                    </tbody>
                </table>
            </form>
        </div>
    </div>
</div>

{% endblock content %}

This will display the message in a simple text format. If you are using bootstrap, you can use the alert class for displaying the messages. Below given is a sample code for the bootstrap alert.

            {% for msg in messages %}
                <div class="alert alert-warning alert-dismissible fade show" role="alert">
                    <strong>Hey !</strong> {{msg}}
                    <button type="button" class="close" data-dismiss="alert" aria-label="Close">
                        <span aria-hidden="true">&times;</span>
                    </button>
                </div>
            {% endfor %}


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