Django

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1 Django Part I SPARCS 11 undead Greatly Inspired by SPARCS 10 hodduc

2 중간중간 GitHub 링크가있으니코드가필요하면참고하세요!

3 Django The web framework for perfectionists with deadlines. Django makes it easier to build better Web apps more quickly and with less code.

4 Websites Built with Django

5 Websites Built with Django

6 Websites Built with Django

7 Websites Built with Django

8 Websites Built with Django

9 Websites Built with Django

10 Django as a Web Framework 웹이란무엇일까?

11 Django as a Web Framework 웹이란무엇일까? HTTP request 와 HTTP response 의집합

12 Request: ara.kaist.ac.kr Response: 200 OK Client Server

13 Request: ara.kaist.ac.kr Response: 200 OK Client Server

14 Know What You Know Front end programming Web Application HTML5 CSS3 JavaScript jquery Bootstrap (a ready-to-serve HTML5/CSS3/JavaScript) Mobile Application Android ios

15 User Scenario

16 User Scenario User Clicks. What then?

17 Know What You Don t Know Back end programming Server Processing incoming requests (from user) Return response (to user) Database Save user interactions Logging

18 Know What You Don t Know Back end programming Server Processing incoming requests (from user) Return response (to user) Database Save user interactions Logging

19 Give an Output for an Input!

20 How? #include <iostream> using namespace std; int main() { cin >> input; (do something ) cout << output; } return 0;

21 How? CGI #include <stdio.h> #include <stdlib.h> int main(void) { char *data; long m,n; printf("%s%c%c\n", "Content-Type:text/html;charset=iso ",13,10); printf("<title>multiplication results</title>\n"); printf("<h3>multiplication results</h3>\n"); data = getenv("query_string"); if(data == NULL) printf("<p>error! Error in passing data from form to script."); else if(sscanf(data,"m=%ld&n=%ld",&m,&n)!=2) printf("<p>error! Invalid data. Data must be numeric."); else printf("<p>the product of %ld and %ld is %ld.",m,n,m*n); return 0; }

22 Don t Reinvent the Wheel 있는건그냥가져다씁시다. 또또칸애들이이미잘만들어뒀으니까요.

23 Let the Django Begin

24 Basic Structure Project and Applications

25 Basic Structure Django 웹어플리케이션은 project 와 app 으로구성되어있다.

26 ara board sysop account message mobile.. otl accounts dictionary groups timetable favorites..

27 Practice: Project tutorial With helloworld, intro apps

28 Before You Start Any Python Project ~/ $ virtualenv env ~/ $ source env/bin/activate # If a requirements.txt exists ~/ $ pip install -r requirements.txt (env) ~/ $

29 Before You Start Any Python Project ~/ $ virtualenv env ~/ $ source env/bin/activate # If a requirements.txt exists ~/ $ pip install -r requirements.txt (env) ~/ $ (env) ~/ $ deactivate # When you are done

30 Start a Django Project (env) ~/ $ pip install django # Django version installed as of (env) ~/ $ django-admin startproject tutorial (env) ~/ $ cd tutorial (env) ~/tutorial $ ls manage.py tutorial

31 Start a Django Project env/.. tutorial/ manage.py tutorial/ init.py settings.py urls.py wsgi.py # Python virtual environment directory # Django project directory # Django project manage utility # Django default package directory # Empty file: python package identifier # File for Django settings # File for URL mapping # WSGI entry point

32 Start a Django Project (env) ~/tutorial $ python manage.py runserver :PORT_NUMBER # PORT_NUMBER in range 0 ~ # 0 ~ 9999 preoccupied by system. # (Which means, DON t USE THEM!!)

33 Start a Django Project View Code: Github.com

34 First App: Hello, World!

35 Creating a Django App (env) ~/tutorial $ python manage.py startapp helloworld (env) ~/tutorial $ ls helloworld manage.py tutorial (env) ~/tutorial $ ls helloworld init.py admin.py migrations models.py tests.py views.py

36 Add App to Project (env) ~/tutorial $ vi tutorial/settings.py INSTALLED_APPS = ( django.contrib.staticfiles, helloworld, )

37 Writing a View File (env) ~/tutorial $ vi helloworld/views.py from django.http import HttpResponse # Create your views here. def helloworld(request): return HttpResponse( Hello, World! )

38 Map a URL for a View Function (env) ~/tutorial $ vi tutorial/urls.py urlpatterns = [ url(r ^admin/, include(admin.site.urls)), url(r ^helloworld/, helloworld.views.helloworld ), ]

39 Run Server Again (env) ~/tutorial $ python manage.py runserver :PORT_NUMBER

40 Run Server Again (env) ~/tutorial $ python manage.py runserver :PORT_NUMBER View Code: Github.com

41 Understanding urls.py

42 Role of urls.py 이정표로써 urls.py Request 가발생했다! 여긴어디? 난누구? urls.py: 당황하지말고어디어디로가서이함수를실행시켜보세요.

43 Role of urls.py url(r ^helloworld/, helloworld.views.helloworld ), helloworld/ 요청이들어왔네요? helloworld app 안의 views.py 를열어보시고 helloworld() 라는함수를실행시키세요!

44 Application of urls.py 여러앱으로구성된프로젝트에서작업하고있다면? /main/view/ : 메인앱의뷰함수에뷰로가세요 /board/list/ : 보드앱의뷰함수에리스트로가세요 /board/new/ : 보드앱의뷰함수의리스트로가세.. 요 bb /board/edit/ : 보드앱의뷰함수의에딧으로가세요ㅠㅠㅠ /session/login/ : 세션앱의뷰함수의 : 으앙아몰랑ㅠㅠ

45 Application of urls.py 불쌍한 urls.py 짱을위해코드를모듈화합시다. /main/view/ : 메인앱이시네요? 메인앱의담당자한테 rr /board/list/ : 보드앱이시네요? 보드앱의담당자한테 rr /board/new/ : 너도보드앱한테가세요 /board/edit/ : 너도보드앱한테가시고그다음은아몰랑 /session/login/ : 세션앱의담당자한테가면걔가알려줄거임 /wrong_request/ : 넌누구세요? 안사요관심없어요

46 URL Routing (env) ~/tutorial $ cp tutorial/urls.py helloworld/ (env) ~/tutorial $ ls helloworld/ init.py admin.py migrations models.py tests.py urls.py views.py

47 URL Routing (env) ~/tutorial $ vi tutorial/urls.py urlpatterns = [ url(r ^admin/, include(admin.site.urls)), url(r ^helloworld/, helloworld.views.helloworld ), ]

48 URL Routing (env) ~/tutorial $ vi tutorial/urls.py urlpatterns = [ url(r ^admin/, include(admin.site.urls)), url(r ^helloworld/, helloworld.views.helloworld ), url(r ^helloworld/, include( helloworld.urls )), ]

49 URL Routing (env) ~/tutorial $ vi helloworld/urls.py urlpatterns = [ url(r ^admin/, include(admin.site.urls)), url(r ^helloworld/, helloworld.views.helloworld ), ]

50 URL Routing (env) ~/tutorial $ vi helloworld/urls.py urlpatterns = [ url(r ^admin/, include(admin.site.urls)), url(r ^helloworld/, helloworld.views.helloworld ), url(r ^$, helloworld.views.helloworld ), ]

51 Add Another View Function (env) ~/tutorial $ vi helloworld/views.py def helloworld(request): return HttpResponse( Hello, World! ) def introduce(request): return HttpResponse( This is Shavakan, 24 years old, from Zul jin, Azeroth. )

52 Add Another View Function (env) ~/tutorial $ vi helloworld/urls.py urlpatterns = [ url(r ^$, helloworld.views.helloworld ), url(r ^introduce/, helloworld.views.introduce ), ]

53 Add Another View Function (env) ~/tutorial $ python manage.py runserver :PORT_NUMBER View Code: Github.com

54 Add Another App (env) ~/tutorial $ python manage.py startapp intro (env) ~/tutorial $ vi tutorial/settings.py INSTALLED_APPS = ( django.contrib.staticfiles, helloworld, )

55 Add Another App (env) ~/tutorial $ python manage.py startapp intro (env) ~/tutorial $ vi tutorial/settings.py INSTALLED_APPS = ( django.contrib.staticfiles, helloworld, intro, )

56 Add Another App (env) ~/tutorial $ cp tutorial/urls.py intro/ (env) ~/tutorial $ vi tutorial/urls.py urlpatterns = [ url(r ^admin/, include(admin.site.urls)), url(r ^helloworld/, include( helloworld.urls )), ]

57 Add Another App (env) ~/tutorial $ cp tutorial/urls.py intro/ (env) ~/tutorial $ vi tutorial/urls.py urlpatterns = [ url(r ^admin/, include(admin.site.urls)), url(r ^helloworld/, include( helloworld.urls )), url(r ^intro/, include( intro.urls )), ]

58 Add Another App (env) ~/tutorial $ vi intro/views.py # -*- coding: utf-8 -*- from django.http import HttpResponse def home(request): return HttpResponse( /intro/ 스팍스 /( 자기학번 )/( 자기이름 ) 으로가주세요! )

59 Add Another App (env) ~/tutorial $ vi intro/urls.py urlpatterns = [ url(r ^admin/, include(admin.site.urls)), url(r ^helloworld/, include( helloworld.urls )), url(r ^$, intro.views.home ), ]

60 Add Another App (env) ~/tutorial $ python manage.py runserver :PORT_NUMBER

61 나는자바계의김정일이다! / K.H.L. 으아ㅏ아ㅏㅏㅏㅏㅏㅏㅏㅏ대포동발사!! /board/garbages/ 아라개발팀에카와이한디자이너님이계시다던데사실인가요 / 호떡 진실은저너머에 /board/qanda/ 여자친구와데이트후기 / qwertyasdf /board/love/ 매번바뀌는 URL 규칙 참고 : 픽션입니다 ^^

62 Dynamic URL URL pattern 은정규식으로표현한다. 모르면공부하세요 뭔줄알고필요할때찾아쓸수있는정도면됨 urlpatterns = patterns(, (r'^([\w \[\]\.]+)/([\d]+)/$', warara.board.views.read') )

63 Dynamic URL 만약 /garbage/ / 이라면 read(request, garbage, ) 함수호출과동일하게동작 urlpatterns = patterns(, (r'^([\w \[\]\.]+)/([\d]+)/$', warara.board.views.read') )

64 Write View Function for Dynamic URL (env) ~/tutorial $ vi intro/views.py # -*- coding: utf-8 -*- from django.http import HttpResponse def me(request, city, town, name): s = u" 나는 %s %s의 %s이다!" % (city, town, name) return HttpResponse(s)

65 Write Dynamic URL Handler (env) ~/tutorial $ vi intro/urls.py urlpatterns = [ url(r ^$, intro.views.home ), url(r'^([^/]+)/([^/]+)/([^/]+)/', 'intro.views.me'), ]

66 Run Server With Dynamic URL (env) ~/tutorial $ python manage.py runserver :PORT_NUMBER View Code: Github.com

67 Next Time: All About Template

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