login user

Date: March 23rd 2016
Last updated: March 23rd 2016

Creating user login follows on from register users.

urls.py
When the user enters /login/ into the webbrowser the login_user method is called.

from django.conf.urls import url
from . import views

app_name = 'surferprofile'
urlpatterns = [
    url(r'^login/$', views.login_user, name='login'),
]

views.py
The first thing that happens is the logout of an existing user (if there is one). This method makes a request for login.html. When the html form is submitted the user is redirected to the user index page (currently found at '/').

def login_user(request):
    logout(request)
    username = password = ''
    if request.POST:
        username = request.POST['username']
        password = request.POST['password']

        user = authenticate(username=username, password=password)
        if user is not None:
            if user.is_active:
                login(request, user)
                return HttpResponseRedirect('/')
    return render_to_response('surferprofile/login.html', context_instance=RequestContext(request))

Update to base.html
This update to base.html is not essential. I have been extending html templates to remove duplication. I include it here to show that things are working as they should. For more information on how to remove duplication in html templates refer to refactor html templates using base.html.

<div class="headermenu">
  Welcome, {{ user.username }}
</div>

login.html

<h1>Log in</h1>

<form action="/login/" method="post">
    {% if next %}
    <input type="hidden" name="next" value="{{ next }}" />
    {% endif %}

    username:
    <input type="text" name="username" value="{{ username }}" /><br />
    password:
    <input type="password" name="password" value="" /><br />
    {% csrf_token %}
    <button type="submit">Submit</button>
</form>

http://127.0.0.1:8080/login

http://127.0.0.1:8080/ (via redirect)
Note the Welcome text in the header region (i.e. Welcome, duck). The header was created in base.html and extended for the index page.

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