Hands on django part 1
Download as PPTX, PDF0 likes806 views
This document summarizes a hands-on session on the Django web framework. It introduces Django's architecture, installation process, basic usage including templates, models, and the ORM. Key features covered include generating static and dynamic pages, creating and querying database models, and rendering data in templates. The session demonstrates setting up a basic Django project and application with models, views, URLs and templates to display hard-coded and database content.
![Your First view
=> blog/views.py
from django.http import HttpResponse
def greetings(request):
return HttpResponse("GooD Morning")
=> blog/urls.py
from django.conf.urls import url
from blog.views import greetings
urlpatterns = [
url(r'^greetings/$', greetings, name='greetings'),
]](https://image.slidesharecdn.com/handsondjango-p1-160716143539/85/Hands-on-django-part-1-10-320.jpg)
Hands on django part 1
- 1. Hands On Session on Django Jul 16, 2016 From
- 2. This session Architecture Displaying static html pages Template Language Django models ORM Django
- 3. What is Django? ● A Python Framework: designed to support the development of dynamic websites
- 4. Sites Built With Django
- 5. Why Django? ● ORM ● Built In Admin Interface ● Internationalization. ● Reusability ● Django takes care of user authentication, content administration, sitemaps, RSS feeds, and many more tasks ● Testing Libraries. ● Community of 10796 people, 161 countries, 3180 packages and projects.
- 7. Django Installation $ sudo apt-get install python-setuptools python-dev build-essential tree $ sudo apt-get install python-pip python-virtualenv $ virtualenv <env-name> $ source <env-name>/bin/activate $ pip install django
- 8. Start New Project! $ django-admin.py startproject <your-project-name> $ cd <project-name> $ tree $ python manage.py runserver $ python manage.py startapp <app-name> $ tree <app-name> $ python manage.py migrate
- 9. Setting.py ● SECRET_KEY ● INSTALLED_APPS ● DATABASES ● TEMPLATES ● STATIC_URL ● AUTH_PASSWORD_VALIDATORS ● TEMPLATE_CONTEXT_PROCESSORS ● MIDDLEWARE_CLASSES ● YOUR_NEW_SETTINGS # You can add new settings
- 10. Your First view => blog/views.py from django.http import HttpResponse def greetings(request): return HttpResponse("GooD Morning") => blog/urls.py from django.conf.urls import url from blog.views import greetings urlpatterns = [ url(r'^greetings/$', greetings, name='greetings'), ]
- 11. Rendering html code blog/views.py from django.shortcuts import render_to_response def aboutme(request): name = "MicroPyramid" age = 5 return render_to_response('aboutme.html', { 'name': name, 'age': age }) templates/aboutme.html <h1>About Me</h1> <p>my name: {{name}}</p> <p>age: {{age}}</p>
- 12. Models.py blog/models.py from django.db import models from datetime import datetime class Post(models.Model): title = models.CharField(max_length=200) description = models.TextField() createddate = models.DateTimeField(default=datetime.now()) $ python manage.py makemigrations blog $ python manage.py migrate blog
- 13. ORM: Creating data # Creating new rows with Orm >>> python manage.py shell >>> from blog.models import Post >>> p = Post() >>> p.title = "learn some math" >>> p.description = "1+2 = 3" >>> p.save() or >>> Post.objects.create(title="Learn some science", description="E = mc2") <Post: Post object>
- 14. ORM: Reading data # Reading data from database with ORM >>> Post.objects.all() >>> Post.objects.all().count() >>> for p in Post.objects.all(): ... print(p.id) ... print(p.title) ... print(p.description)
- 15. ORM: Editing Data >>> p = Post.objects.get(title="learn some math") >>> p.title = "Math is Interesting" >>> p.description = "a2+2ab+b2" >>> p.save() >>> p = Post.objects.get(title="Learn some science") >>> p.delete() >>> Post.objects.count()
- 16. Rendering data from database blog/views.py def blog_list(request): post_list = Post.objects.all() return render_to_response('postlist.html', { 'post_list': post_list }) postlist.html <h1>All Blog Posts</h1> {% for post in post_list %} <h3>{{post.title}}</h3> <p>{{post.description}}</p> {% endfor %}
- 17. Another Example def blog_detail(request, post_id): post = Post.objects.get(id=post_id) return render_to_response('postdetail.html', { 'post': post }) blog/urls.py url(r'^blog-detail/(?P<post_id>d+)$', blog_detail, name='blog_list'), detail.html <h1>{{post.title}}</h1> <p>{{post.createddate}}</p> <p>{{post.description}}</p>
- 18. Questions?