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| author | prathamesh | 2018-10-10 13:20:27 +0530 |
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| committer | prathamesh | 2018-10-10 13:20:27 +0530 |
| commit | 9c7bcfa877f874dd5a48936a0f73facd512cc26b (patch) | |
| tree | cd832fff67ab34582360a8a784945f070ab2f024 | |
| parent | a5cb345d1f22ab799ebb55b45484708dffbe383a (diff) | |
| parent | 250480331f6d80ee9f677080ee496f333a514de8 (diff) | |
| download | learn_django-9c7bcfa877f874dd5a48936a0f73facd512cc26b.tar.gz learn_django-9c7bcfa877f874dd5a48936a0f73facd512cc26b.tar.bz2 learn_django-9c7bcfa877f874dd5a48936a0f73facd512cc26b.zip | |
Merge branch 'tutorial9'
| -rw-r--r-- | tutorial_9_create_login/slides.md | 123 |
1 files changed, 56 insertions, 67 deletions
diff --git a/tutorial_9_create_login/slides.md b/tutorial_9_create_login/slides.md index c91be08..befc3b2 100644 --- a/tutorial_9_create_login/slides.md +++ b/tutorial_9_create_login/slides.md @@ -26,106 +26,83 @@ Slide 4: **Introduction** - Let us use our knowledge of forms and templates to create a login system for our blog application -- We will use Django's inbuilt authentication system for this. +- We will use Django's built-in authentication system for this. Demonstration ----------------- - -**Modify the urls.py** +------------------ -- Modify the urls.py file located in the ```myproject``` folder +**Add a new form** +- We will now add a login form to the ```forms.py``` file located in ```blog``` folder +- Add the following code to the file; - from django.conf.urls import include, url - from django.contrib import admin - from blog import views - from django.contrib.auth import views as auth_views # Add this import + from django.contrib.auth.forms import AuthenticationForm + from django import forms + class LoginForm(AuthenticationForm): + username = forms.CharField(label="Username", max_length=30, + widget=forms.TextInput(attrs={'name': 'username'})) + password = forms.CharField(label="Password", max_length=30, + widget=forms.PasswordInput(attrs={'name': 'password'})) - urlpatterns = [ - url(r'^admin/', admin.site.urls), - url(r'^blogs/$', include('blogs.urls')), - url(r'^login/$', auth_views.login, {'template_name': 'login.html'}), # Add this line - ] +**explain this in short, any complex concept then cna mention will be covered in the upcoming tutorials** Demonstration ------------------ -**Create a new template* +**Create a new template** - Create a template ```login.html``` at ```/blog/templates/blog/login.html``` to look like below <html> <body> - <form method="post" action="{% url 'django.contrib.auth.views.login' %}"> - {% csrf_token %} - <p class="bs-component"> - <table> - <tr> - <td>{{ form.username.label_tag }}</td> - <td>{{ form.username }}</td> - </tr> - <tr> - <td>{{ form.password.label_tag }}</td> - <td>{{ form.password }}</td> - </tr> - </table> - </p> - <p class="bs-component"> - <center> - <input class="btn btn-success btn-sm" type="submit" value="login" /> - </center> - </p> - <input type="hidden" name="next" value="{{ next }}" /> - </form> + <form method="post"> + {% csrf_token %} + {{ form.as_p }} + <input type="submit" value="login" /> + </form> </body> </html> +**explain this in short, any complex concept then cna mention will be covered in the upcoming tutorials** + Demonstration ------------------- +---------------- -**Add a new form** +**Modify the urls.py** -- We will now add a login form to the ```forms.py``` file located in ```blog``` folder -- Add the following code to the file; +- Modify the urls.py file located in the ```myproject``` folder - from django.contrib.auth.forms import AuthenticationForm - from django import forms - class LoginForm(AuthenticationForm): - username = forms.CharField(label="Username", max_length=30, - widget=forms.TextInput(attrs={'name': 'username'})) - password = forms.CharField(label="Password", max_length=30, - widget=forms.TextInput(attrs={'name': 'password'})) + from django.contrib import admin + from django.urls import path, include + from django.contrib.auth import views as auth_views # Add this import + + urlpatterns = [ + path('admin/', admin.site.urls), + path('blogs/', include('blog.urls', namespace='blog')), + path('login/', auth_views.login, {'template_name': 'blog/login.html', 'authentication_form': LoginForm}, name='login'), # Add this line + ] +**explain this** Demonstration -------------------- -**Add the form to the URL configuration** +**Modify settings.py** -- We will now add the form that we just created to the URL configuration of ```/login``` URL +- Add the following: - # myproject/urls.py + LOGIN_REDIRECT_URL = '/blogs/get_blogs/' - from django.conf.urls import include, url - from django.contrib import admin - from blog import views - from django.contrib.auth import views as auth_views - from blog.forms import LoginForm - - urlpatterns = [ - url(r'^admin/', admin.site.urls), - url(r'^blogs/$', include('blogs.urls')), - url(r'^login/$', auth_views.login, {'template_name': 'login.html', 'authentication_form': LoginForm}}), # Add this variable 'authentication_form' - ] +**explain this** Demonstration -------------------- **Modifying the views** -- You will have to add this line ```@login_required(login_url="login/")``` above all the function in the ```views.py``` +- You will have to add this line ```@login_required(login_url="/login/")``` above all the function in the ```views.py``` - This is called a decorator. - It is a special function and a built-in feature in django that allows you to verify if the current session of the User is authenticated. - In case the user is not logged in / authenticated, the user is redirected to the link specified in the variable ```login_url``` @@ -134,10 +111,15 @@ Example: # blog/views.py - @login_required(login_url="login/") - def get_blogs(request, username): + @login_required(login_url="/login/") + def get_blogs(request): ... + +At this point, run the server and show login demo using the super user credentials +You can visit page ```http://localhost:8000/blogs/get_blogs/``` and show the demo + + Demonstration --------------------- @@ -156,14 +138,21 @@ Demonstration urlpatterns = [ url(r'^admin/', admin.site.urls), url(r'^blogs/$', include('blogs.urls')), - url(r'^login/$', auth_views.login, {'template_name': 'login.html', 'authentication_form': LoginForm}}), - url(r'^logout/$', auth_views.logout, {'next_page': '/login'}), # Add this line + url(r'^login/$', auth_views.login, {'template_name': 'login.html', 'authentication_form': LoginForm}, name='logout'), + url(r'^logout/$', auth_views.logout, {'next_page': '/login'}, name='logout'), # Add this line ] Demonstration --------------------- -- Add a link to the ```/logout``` url to the templates +- Add a link to the ```/logout``` url to the template blogs.html as following: + + <p><a href="{% url 'logout' %}">Logout</a></p> + +At this point, run the server and show logout demo, as well as login and logout demo again in different ways. +For example: +1. We can show http://localhost:8000/blogs/get_blogs/ and it reditrects to login page if user is not authenticated, else we see the blogs +2. We can show http://localhost:8000/login/ and demonstrate login and redirects! **Concluding and Assignment Slides** |