Django Based Web Application Part - I

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websites |

websites framework |

Django frameworks , open source web framework |

Dynamic websites python Django framework |

django framework |

,

Web framework ? Web framework software tool web development

support |

software tool websites, web applications run | 4 | URL Mapping

Database Manipulation

Templating

Security Measures

web framework |

ZEND, Flask, Ruby, Perl etc.

web framework

Utilize library function

code application |

,

Django ?

Django | D (silent) |

high level Python web framework website development design |

free open source |

web development components |

(repetition) |

reusability |

Django Django Software Foundation |

BSD (Berkeley Source Distribution) |

,

Django (Advantages)

Object Relational Mapping (ORM) Support

No-SQL Database support

support

Framework support

Administration GUI

Development Environment

Loosely Coupled

Less Coding

Dont Repeat Yourself (DRY)

Scalable

Secured

,

Website ? website client-server architecture

browser client program web server interact server |

Client http | client http request server response http response |

HTTP Get Request: web client webpage GET request webpage URL (GET request ) | server GET request riceive URL

HTML ( )

respond | HTML

error (404) |

HTTP GET request

URL server

|

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Website . . . .

HTTP POST Request: web client data server

( server

database store data server

POST request |

POST request http response error

success code.

http post request data

client server |

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Django ?

1. MVT MTV architecture support (Model Template View)

2.Request/Response System: Django software components web request respond |

3. Web Request django applications URLs |

4. Request views

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5. web response

return |

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Django installation

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Django install DOS prompt

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C:\> pip install django

internet connection

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Django Project App

,

Django 2 Project app

project application refer |

app project

submodule |

school project

submodule app

Student

Teachers

Exam

Fee

Django Project App

,

Django project

location folder project

folder | folder

cmd folder DOS

|

django project

folder |

Django Project

,

project create |

ClassXII folder

DjangoWork components

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components

Django Project

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ClassXII (outer folder)

ClassXII (Inner Folder) folder

manage.py | inner folder ClassXII

components - components

ClassXII

ClassXII

__init__.py Settings.py Urls.py Wsgi.py

Manage.py Outer ClassXII Folder

Inner ClassXII Folder

Django Server run

,

Django server

? project folder

-

runserver manage.py |

URL web browser

Django Server run

,

url - 127.0.0.1:8000, web

browser

server -

Django App

,

project app -

manage.py | ClassXII app

student. syntax -

E:\DjangoWork\ClassXII>manage.py startapp student

outer ClassXII folder student

structure ClassXII

CLassXII

__init__.py Settings.py Urls.py Wsgi.py

student

migration __init__.py Admin.py Apps.py Models.py Tests.py

Views.py

Manage.py

App project register

,

app project | app project

register inner ClassXII folder

setting.py

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Settings.py

INSTALLED_APPS

list variable student

entry |

app project

registration |

Template save

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django MVT (Model Views Template)

outer folder folder

webpages | Folder

template | html files |

template entry settings.py |

Settings.py TEMPLATES

list variable dictionary key

DIR value [template]

folder |

project

student app

template |

Webpage save

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Template folder webpage firstpage.html -

entry views

function |

Views.py logic

,

views.py html pages

function |

functions execute

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Views render | student

folder views.py IDLE open view

create function html return

render |

Urls.py views set

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inner project folder (ClassXII)

add | urls.py -

save |

project folder cmd entry django server run

firstpage url

web browser (http://127.0.0.1:8000/firstpage)

Webpage display

,

web browser open

URL html |

django |

presentation html pages

components |

Django Based web Applications Part -2

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webpage display |

project

App

Template webpage |

webpages components

webpage data

server |

Get Method POST Method |

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