Django learning

How to use Django

• install python

  brew python

• install pip

  pip3 install pipenv

• Create Django

  pipenv install django==2.1

  This should create a virtual environment for you with Django install.

Pay Attention:
**Virtual environment specifies which wersion of Django you want to use for different project.**For example, if you have two projects, you’ll be able to create two separate virtual environments one for each. You can say something like, I want to use Django 2.1 for project A and Django 2.2 for Project B.
Use lsto check there are pipfile and pipfile.lock

• Create a Django Project

1. go to environment by texting pipenv shell
2. create prject by typing django-admin startproject yourprojectname .
3. start our django server by typing python manage.py runserver
4. copy “http://127.0.0.1:8000/" and go to Chrome to open it

Hello world for Django

• Create a new app within this project

PS: what is different between project and app in Django?
In Django:

• Project:
  • a single project powers a single website
  • a project can contain multiple apps
• App:
  • Each app focuses on a particular aspect
• Example:
  • a shopping website:
  • one app for handling user authentication
  • another app for handling payments
  • another app for listing items

Open a new window in terminal and go the folder of your project;
Type:python manage.py startapp hello
Then use ls to see the file.

However, the Django project doesn’t know about hello we created.
To do that you can open ‘youproject/setting.py’

• Create a view for the target URL
  here the target URL is 127.0.0:800/sayHello/
  A veiw = what’s shown to the user for a certain URL

Create a action page

• Create a templates
  mkdir templates and create a html file

• Create a models
  models = a way to interact with your database