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I've created login form for my Django project, and I have a problem with the error message. This is my function in views.py:
def user_login(request):
if request.method == 'POST':
username = request.POST.get('username')
password = request.POST.get('password')
user = authenticate(username=username, password=password)
if user:
if user.is_active:
login(request, user)
return HttpResponseRedirect('/friends_plans/users/')
else:
return HttpResponse("Your account is disabled")
else:
print "Invalid login details: {0}, {1}".format(username, password)
return HttpResponse("Invalid login details supplied.")
else:
return render(request, 'friends_plans/index.html', {})
The error message ("Invalid login details supplied") appears on a new blank page. Could you please tell me how to show this message if username or password is incorrect on the same login page (index.html)?
This is my template index.html:
{% load staticfiles %}
<html >
<head >
<title> Friends' Plans </title>
<meta charset ="utf -8" />
<link rel="stylesheet" href="{% static 'css/friends_plans.css' %}">
</head >
<body >
<div id ="container">
<div id ="header">
<ul id ="menu">
<span><a id="firstbutton" href ="" >Friends' Plans</a> </span>
<span><a id="helpbutton" href ="" >HELP</a></span>
</ul>
</div>
<div id ="left">
<form id="login_form" method="post" action="">
{% csrf_token %}
Username: <input type ="text" name ="username" value="" size="50" /> <br />
Password: <input type ="password" name ="password" value="" size="50"/> <br />
<input type ="submit" value="submit" />
</form>
{% if user.is_authenticated %}
<a href="/friends_plans/logout/">Logout</a>
{% else %}
<a href="/friends_plans/register/">Register here</a><br />
{% endif %}
</div>
<div id ="right">
<h1 id="welcome">Welcome to Friends' Plans</h1>
<img class="cat" src={% static 'images/cat4.jpg' %} />
<img class="cat" src={% static 'images/cat2.jpg' %} />
<img class="cat" src={% static 'images/cat3.jpg' %} />
<img class="cat" src={% static 'images/cat6.jpg' %} />
<img class="cat" src={% static 'images/cat5.jpg' %} />
<img class="cat" src={% static 'images/cat1.jpg' %} />
</div>
<div id ="footer"> Copyright </div>
</div>
</body>
</html>
I had an idea to set a variable error=False and to change if for error=Trueif form.is_valid() is False, and to write {% if error %} in the template, but there was a mistake about csrf_token although there is {% csrf_token %} in the template.
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In views.py:
def login_process(request):
try:
user = authenticate(username = request.POST['username'],
password = request.POST['password'])
except KeyError:
return render(request, 'friends_plans/index.html',{
'login_message' : 'Fill in all fields',})
if user is not None:
#'User' and 'Pass' right
if user.is_active:
login(request, user)
else:
return render(request, 'friends_plans/index.html',{
'login_message' : 'The user has been removed',})
else:
return render(request, 'friends_plans/index.html',{
'login_message' : 'Enter the username and password correctly',})
return HttpResponseRedirect('/friends_plans/users/')
In index.html:
{% load staticfiles %}
<html >
<head >
<title> Friends' Plans </title>
<meta charset ="utf -8" />
<link rel="stylesheet" href="{% static 'css/friends_plans.css' %}">
</head >
<body >
<div id ="container">
<div id ="header">
<ul id ="menu">
<span><a id="firstbutton" href ="" >Friends' Plans</a> </span>
<span><a id="helpbutton" href ="" >HELP</a></span>
</ul>
</div>
<div id ="left">
<form id="login_form" method="post" action="">
<div class="add_your_styles">
{{ login_message }}
</div>
{% csrf_token %}
Username: <input type ="text" name ="username" value="" size="50" /> <br />
Password: <input type ="password" name ="password" value="" size="50"/> <br />
<input type ="submit" value="submit" />
</form>
{% if user.is_authenticated %}
<a href="/friends_plans/logout/">Logout</a>
{% else %}
<a href="/friends_plans/register/">Register here</a><br />
{% endif %}
</div>
<div id ="right">
<h1 id="welcome">Welcome to Friends' Plans</h1>
<img class="cat" src={% static 'images/cat4.jpg' %} />
<img class="cat" src={% static 'images/cat2.jpg' %} />
<img class="cat" src={% static 'images/cat3.jpg' %} />
<img class="cat" src={% static 'images/cat6.jpg' %} />
<img class="cat" src={% static 'images/cat5.jpg' %} />
<img class="cat" src={% static 'images/cat1.jpg' %} />
</div>
<div id ="footer"> Copyright </div>
</div>
</body>
</html>
You can place {{ login message }} anywhere. It's just a text string.
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