First, clone the project:

$ mkdir python
$ cd python
$ mkdir projects
$ cd projects
$ git clone https://github.com/htmfilho/immobilier.git
$ cd immobilier

Check the version of Python you have installed in your machine using the command.

$ python3 --version
  Python 3.4.3

$ python --version
  Python 3.4.3

The numbers that matter are 3 and 4. We use them to create a virtual environment on:

Installing:

# sudo apt-get install python-virtualenv

Creating:

$ virtualenv --python=python3.4 immovenv
$ chmod +x immovenv/bin/activate

Running:

$ source immovenv/bin/activate

Creating:

C:\Users\[Name]\python\projects\immobilier> C:\Python34\python -m venv immovenv

Running:

C:\Users\[Name]\python\projects\immobilier> immovenv\Scripts\activate

(immovenv) $ pip install django==1.8

(immovenv) $ python manage.py migrate
(immovenv) $ python manage.py runserver

After the restart, the application is available at http://localhost:8000.

Everytime you change the model in any of the modules you have to generate a new migration file with the following command:

(immovenv) $ python manage.py makemigrations

The migration files will make sure the database is consistent with the code, so you won't have surprises while deploying your application. The command above will detect the changes you have made in your model, compare with the current database state and generate a script to migrate the database to the current state of your model. Sometimes this migration is not straitforward and you will have to answer some questions during the migration process. It should be done carefully to avoid inconsistencies.

In case you didn't put the application in production yet and you face a major problem on the migration, you can, as a last resource, start from scratch by deleting the database file and recreating it. For that, you just have to delete the file db.sqlite3 located at the root of the project and perform the following commands:

(immovenv) $ python manage.py migrate
(immovenv) $ python manage.py createsuperuser

Before moving forward, make sure you installed PostgreSQL, as explained in the section <>. Then, follow the steps below to create the backend database:

$ createdb immo_dev
$ createuser immo_usr -P    // Inform the password 'osis' when asked for.
$ psql -d immo_dev
  =# grant connect on database immo_dev to immo_usr;
  =# revoke connect on database immo_dev from public;
  =# alter user immo_usr createdb;
  =# \q

To access the admin module, you first have to create a user. Stop the server and run the following command:

(immovenv) $ python manage.py createsuperuser

Follow the instructions and restart the server. To test your access, go to http://localhost:8000/admin and test your access.