Django:

• Django is a high-level Python web framework that encourages rapid development and clean, pragmatic design
• Django is based on MVT (Model-View-Template) architecture.

Start a django project

• go to the targetted directory and run:
  • django-admin startproject djangoProject
• go to the project directory and run:
  • python3 manage.py startapp djangoApp
• we can create multiple app inside out project
• run the project on server:
  • python3 manage.py runserver

Virtual Environment

• Install virtual environment golabally
  • pip install virtualenv
• Then create my own virtual environment in my project
  • virtualenv venv
• Then again install django in virtual env (inside the project)
• Start with virtual env: . venv/bin/activate
• store the requierments packages with version within the project by this command:
  • pip freeze > requirements.txt
• Then when someone work with this project, he just need to run the command for installing these pacages:
  • pip install -r requirements.txt

Ptoject Setup

• djangoProject->settings.py: include the app name 'djangoApp' inside INSTALLED_APPS
• djangoProject->urls.py: include the apps urls 'path('', include('djangoApp.urls'))' inside urlpatterns
• create urls.py inside djangoApp

MVT:

• M for Model: by which we can connect database.
• V for Views: where we write the business logics
• T for Template: this is the frontend part

Template:

• extends: we can extend parent page into another (child) page by using this in the child page
  • {% extends template_file_name %}
• block-endblock: we can change a specific portion from parent page to child page. This should write both parent and child page
  • {% block title %}Modified Title{% endblock %}
  • {% block content %}Modified Content{% endblock %}
• static load: load an image from static folder
  • {% load static %}
• url: pass a url by name in action
• {% url 'submitmyform' %}
• csrf_token: for csrf validation
  • {% csrf_token %}

View:

• context: we use to pass data to template. sending dictionary type data and we can show the the data just using the key.
  • return render(request, 'index.html', context=mydictionary)

Url:

• we write the urls inside urlpatterns list in urls.py file
• url format:
  • path('home', views.Index, name='index')
    • home: url
    • Index: method in views file
    • name='index': naming
  • path('intro/str:name/int:age', views.intro, name='intro')
    • here we send two parameters from url
    • we should maintain this format with data type

forms:

• as_p: as paragraph
• as_table: as table
• as_ul: as ul
• attrs: using this we can pass class and its value by key-value in any form input
  • attrs={'class':'form-control'})