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memphisthemau / django-notes

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Setting up virtualenv

  • WORKON_HOME defines where the virtual environment should live.
  • PROJECT_HOME defines the location of the development projects.
export WORKON_HOME=${HOME}/.virtualenvs
export PROJECT_HOME=${HOME}/django-projects
source /usr/share/virtualenvwrapper/virtualenvwrapper.sh

Creating a virtual environment

  • Create a new virtual environment.
$ mkvirtualenv -p /usr/bin/python3.5 readit
Running virtualenv with interpreter /usr/bin/python3.5
Using base prefix '/usr'
New python executable in /home/user1/.virtualenvs/readit/bin/python3.5
Also creating executable in /home/user1/.virtualenvs/readit/bin/python
  • To stop working on the virtual environment, use the deactivate command.
  • To start working on the virtual environment, use the workon <project> command.
(readit) user1@server:~/django-projects$ deactivate 
user1@server:~/django-projects$ workon readit
(readit) user1@server:~/django-projects$
  • To delete a virtual environment, use rmvirtualenv.
$ rmvirtualenv readit
Removing readit...

Install MySQL

  • Follow this link.

https://www.digitalocean.com/community/tutorials/how-to-create-a-django-app-and-connect-it-to-a-database

Install django

  • Install django with pip and confirm the installation with pip freeze.
$ pip install django
Collecting django
  Downloading https://files.pythonhosted.org/packages/ab/15/cfde97943f0db45e4f999c60b696fbb4df59e82bbccc686770f4e44c9094/Django-2.0.7-py3-none-any.whl (7.1MB)
    100% |████████████████████████████████| 7.1MB 28.4MB/s 
Collecting pytz (from django)
  Downloading https://files.pythonhosted.org/packages/30/4e/27c34b62430286c6d59177a0842ed90dc789ce5d1ed740887653b898779a/pytz-2018.5-py2.py3-none-any.whl (510kB)
    100% |████████████████████████████████| 512kB 299kB/s 
Installing collected packages: pytz, django
Successfully installed django-2.0.7 pytz-2018.5

$ pip freeze
Django==2.0.7
pkg-resources==0.0.0
pytz==2018.5

Create a local pip repository

  • Install python3-pip and pip2pi. Become root first for pip2pi.
apt install python3-pip
sudo su -
pip3 install pip2pi
  • Create a local pip directory /opt/pip. Download pip packages to this directory and run dir2pi. Finally, copy /opt/pip to /var/www/html/ for web hosting.
mkdir /opt/pip
pip3 install --download /opt/pip django==2.0.6
dir2pi /opt/pip
cp -av /opt/pip /var/www/html/

Using MySQL with django

  • Install mysql.
apt install mysql-server
apt install libmysqlclient-dev
  • Install django and SQL client.
cat requirements.txt 
django==2.0.6
mysqlclient==1.3.12
pip3 install -r requirements.txt

Starting the project

  • Move into the project directory and create a project.
$ cd django-projects/
$ django-admin startproject readit

Starting the development environment

  • Since django was installed using pip without root privileges, we can't start the development server using sudo nor on a port number that's lower than 1024. For production web server, run using uWSGI and nginx.
(readit) user@10-150-139-250:~/django-projects/readit$ python manage.py runserver 0.0.0.0:8000    
Performing system checks...

System check identified no issues (0 silenced).

July 31, 2018 - 02:14:12
Django version 2.0.7, using settings 'readit.settings'
Starting development server at http://0.0.0.0:8000/
Quit the server with CONTROL-C.

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