stratos: A Python repository from UnixLoverSaurabh

A migration allows us to move databases from one design to another, this is also reversible
$ django-admin startproject stratos
$ python manage.py runserver
$ python manage.py startapp first_app
init.py
Blank python script, python know that this directory can be treated as a package
admin.py
We can register our models here which Django will then use them with Django's admin interface
apps.py
Application specific configurations
models.py
store the application's data models
tests.py
store test functions to test our code
views.py
functions that handle requests and return responses
Migrations folder
stores database specific information as it relates to the models
{{}} used for simple text injection
{%%} used for more complex injections and logic
Django comes equipped with SQLite
$ python manage.py migrate
Register the changes to our application
$ python manage.py makemigrations first_app
$ python manage.py migrate

$ python manage.py shell

	>>> from first_app.models import Topic
	>>> t = Topic(top_name="Social Network")
	>>> t.save()
	>>> print(Topic.objects.all())
	>>> quit()

$ python manage.py createsuperuser
Faker library to create script that will populate our model with some dummy data
Django - MTV (Models-Templates-Views)
Cross-Site-Request Forgery (CSRF) token, which secures the HTTP Post action that is initiated on the subsequent submission of a form. {% csrf_token %}
{{ form.as_p }} – Render Django Forms as paragraph
Relative URLs with templates Method-1: <a href="{% url 'thanku' %}">Thanks</a> name='thanku' is in the urls.py file

Method-2: <a href="{% url 'first_app.views.thanku' %}">Thanks</a>

Method-3: <a href="{% url 'first_app:thanku' %}">Thanks</a> this method requires that app_name variable to be created inside the urls.py file

URL Template Inheritance or Template extending is extending the base.html to other .html files

base.html

 	<body>
 		{% block body_block %}
 		    Anything outside of this will be inherited if you extend!
 		{% endblock %}
 	</body>

other.html

 	<!DOCTYPE html>
 	{% extends "first_app/base.html" %}
 	{% block body_block %}
 	<HTML specific for other.html>
 	<HTML specific for other.html>
 	{% endblock %}

General form for a template filter
{{ value|filter:'parameter' }}
Django Password PBKDF2 algorithms with a SHA256 hash, built-in to Django
```
$ pip install bcrypt
$ pip install django[argon2]
```
Topics to learn
- ORMs
- Advanced User Authorization
- Socail Login
- Payment
- REST APIs
- Encryption
- Testing
- Sessions
- Cookies
- Class-Based Views
WSGI Servers
A Web Server Gateway Interface (WSGI) server implements the web server side of the WSGI interface for running Python web applications.
What is an ORM? Object-Relational-Mapper Depending on the ORM you get a lot of advanced features out of the box, such as support for transactions, connection pooling, migrations, seeds, streams

UnixLoverSaurabh/stratos