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The Hitchhiker's Guide to the
Web Development
Carlos Hernando
@chernando
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1,220,000,000
results
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DON’T
PANIC
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PHP
Python
Ruby Java
JavaScript
?
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Model
View Controller
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Model
View Controller
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Object-Relational Mapping
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Object-Relational Mapping
Post.comments
SELECT * FROM comment where post_id = 2;
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Model
View Controller
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No content
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No content
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Model
View Controller
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http://www.ticketea.com/try-it-general
http://www.ticketea.com/
URL Controller:
Index
URL Controller:
event
‘try-it’
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GET
POST
HTTP
REQUEST
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No content
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Config
CLI Tools
Module/Application
URLs
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Model
View Controller
Template
MVT
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Model
Template View
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class Post(models.Model):
title = models.CharField(max_length=45)
author = models.ForeignKey(AUTH_USER_MODEL)
content = models.TextField()
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class Comment(models.Model):
author = models.ForeignKey(AUTH_USER_MODEL)
post = models.ForeignKey(Post)
content = models.TextField()
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Model
Template View
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{% extends "base.html" %}
{% block content %}
{% for post in posts %}
{% endfor %}
{% endblock %}
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class Post(models.Model):
title = models.CharField(max_length=45)
author = models.ForeignKey(AUTH_USER_MODEL)
content = models.TextField()
@property
def comments(self):
return self.comment_set.count()
def __unicode__(self):
return self.title
def get_absolute_url(self):
return reverse('post', args=[self.pk])
;-(
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class PostForm(forms.ModelForm):
class Meta:
model = Post
exclude = ('author',)
{{ form.as_p }}
{% csrf_token %}
forms.py
post_create.html
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Model
Template View
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from . import views
urlpatterns = patterns('',
url(r'^$',
views.index,
name='index'),
url(r'^publish/$',
views.post_create,
name='publish'),
url(r'^post/(?P\d+)/$',
views.post_detail,
name='post'),
url(r'^post/(?P\d+)/comment/$',
views.comment_create,
name='comment'),
)
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def index(request):
last_posts = Post.objects\
.order_by('-pk')[:5]
context = {'posts': last_posts}
return render(request,
'blog/post_list.html',
context)
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{% extends "base.html" %}
{% block content %}
{% for post in posts %}
{% endfor %}
{% endblock %}
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def comment_create(request, post_id):
post = get_object_or_404(Post, pk=post_id)
form = CommentForm(request.POST or None)
if form.is_valid():
comment = Comment()
comment.author = request.user
comment.post = post
comment.content=form.cleaned_data['content']
comment.save()
return HttpResponseRedirect(
post.get_absolute_url())
else:
return render(request,
'blog/post_detail.html',
{'post': post, 'form': form})
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No content
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Config
CLI Tools
Module/Bundle
Controller
Model
Views and Routes
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Model
View Controller
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/**
* Post
*
* @ORM\Table()
* @ORM\Entity
*/
class Post
{
/**
* @var integer
*
* @ORM\Column(name="id", type="integer")
* @ORM\Id
* @ORM\GeneratedValue(strategy="AUTO")
*/
private $id;
/**
* @var string
*
* @ORM\Column(name="title", type="string", length=45)
*/
private $title;
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/**
* @ORM\OneToMany(targetEntity="Comment", mappedBy="post")
*/
private $comments;
/**
* @ORM\ManyToOne(targetEntity="Post", inversedBy="comments")
* @ORM\JoinColumn(name="post_id", referencedColumnName="id")
*/
private $post;
Post.php
Comment.php
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Model
View Controller
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{% extends "base.html.twig" %}
{% block content %}
{% for post in posts %}
{% endfor %}
{% endblock %}
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$post = new Post();
$form = $this->createFormBuilder($post)
->add('title', 'text')
->add('content', 'textarea')
->getForm();
{{ form_widget(form) }}
PostController.php
detail.html.twig
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Model
View Controller
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try_it_blog_homepage:
pattern: /
defaults: {
_controller: TryItBlogBundle:Post:index }
try_it_blog_post_create:
pattern: publish/
defaults: {
_controller: TryItBlogBundle:Post:create }
try_it_blog_post_detail:
pattern: post/{post_id}/
defaults: {
_controller: TryItBlogBundle:Post:detail }
try_it_blog_comment_create:
pattern: post/{post_id}/comment/
defaults: {
_controller: TryItBlogBundle:Comment:create }
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class PostController extends Controller
{
public function indexAction()
{
$posts = $this->getDoctrine()
->getRepository('TryItBlogBundle:Post')
->findBy(array(), // ALL
array('id' => 'desc'),
7);
return $this->render(
'TryItBlogBundle:Post:index.html.twig',
array('posts' => $posts));
}
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public function createAction(Request $request)
{
/* $post and $form missing */
if ($request->isMethod('POST')) {
$form->bind($request);
if ($form->isValid()) {
$em = $this->getDoctrine()
->getManager();
$em->persist($post);
$em->flush();
return $this->redirect($this
->generateUrl('try_it_blog_post_detail',
array('post_id' => $post->getId())));
}
}
return $this->render(
'TryItBlogBundle:Post:create.html.twig',
array('form' => $form->createView()));
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No content
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AJAX RESTful
API
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Micro framework VS Framework
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Model
View Controller
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Models.Comment = Backbone.Model.extend({
});
Collections.Comments =
Backbone.Collection.extend({
model: Models.Comment
});
Model
Collection
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Models.Post = Backbone.Model.extend({
defaults: {
title: 'No title',
content: 'No content',
comments: new Collections.Comments()
},
initialize: function() {
this.get('comments').on('all', function() {
this.trigger('change')
}, this);
}
});
See fetch!
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Model
View Controller
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Templates.Post = _.template([
'
{{ title }}
', '', '{{ content }}', '
', '', ' Show comments', ' Comment!', '
', ].join(''));Slide 50
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Model
View Controller
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Views.Post = Backbone.View.extend({
initialize: function() {
this.model.on('all', this.render, this);
this.render();
},
render: function() {
this.$el.html(
Templates.Post(this.model.toJSON()));
var n_comments = this.model.get('comments')
.length;
this.$el.append($('
') .html('' + n_comments + ' comments')); return this; },
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events: {
'click .showComments': 'showComments',
'click .comment': 'createComment'
},
showComments: function() {
var comments = $('#comments');
var body = comments.find('.modal-body').empty();
this.model.get('comments').each(
function(comment) {
body.append(
Templates.Comment(comment.toJSON()));
});
comments.modal('show');
},
createComment: function() {
var view = new Views.CreateComment(
{ post: this.model });
},
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No content
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Routes?
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PHP
Python
Ruby Java
JavaScript
MVC
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HTML5 / CSS3
Bootstrap / Boilerplate
Responsive
Accessibility
Developer’s tools
Sessions
Migrations
Database performance
NoSQL
Cache
Load balance
Deploy
Scalability
Security
...
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Web Development
https://www.udacity.com/course/cs253
CS169.1x: Software as a Service
https://www.edx.org/courses/BerkeleyX/CS169.1x/2013_March/about
HTML5 Game Development
https://www.udacity.com/course/cs255
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42
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https://github.com/chernando/
https://speakerdeck.com/chernando/hhgttwd
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So Long, and
Thanks for
All the Fish
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ABOUT
This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0
Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/
3.0/.
Product names, logos and trademarks of other companies which are referenced in this document
remain the property of those other companies.