Django

Django

Requirements:

• Python
• Database (MySQL / PostgreSQL...)

Installation:

pip install django

Create project

django-admin.py startproject mysite

Database Setup

Edit: mysite/settings.py

In DATABASES = {...

• ENGINE – Either 'django.db.backends.sqlite3', 'django.db.backends.postgresql_psycopg2', 'django.db.backends.mysql', or 'django.db.backends.oracle'.
• NAME – The name of your database.
• USER – Username for the database.
• PASSWORD – Password for the database.
• HOST – Database HOST.

To create the database tables execute from the project folder:

python manage.py migrate

(pip install MySQL-python)

Run App in development server

If the server is an amazon aws:

python manage.py runserver 0.0.0.0:8000 

Else:

python manage.py runserver

To run server as daemon:

nohup python manage.py runserver 0.0.0.0:8000

To stop the daemon:

ps -ef | egrep python manage.py

then kill process

Create an app

python manage.py startapp appname

Create admin user

python manage.py createsuperuser access at http://serverurl:8000/admin

Usefull packages

Django Allouth

User Registration
Allouth Tutorial

Django registration

Not working in Django 1.7
User registration
Django registration step by step

CBV

CSRF Exempt

class ChromeLoginView(View):
    @method_decorator(csrf_exempt)
    def dispatch(self, request, *args, **kwargs):
        return super(ChromeLoginView, self).dispatch(request, *args, **kwargs)

    def get(self, request):
        return JsonResponse({'status': request.user.is_authenticated()})

    def post(self, request):
        username = request.POST['username']
        password = request.POST['password']
        user = authenticate(username=username, password=password)
        if user is not None:
            if user.is_active:
                login(request, user)
                return JsonResponse({'status': True})
        return JsonResponse({'status': False})

Notes

Templates

href="{% static 'cpc/css/tree.css' %}"
href="{% url 'civilarea_history_create' task.id %}"

Change language template

<form action="{% url 'set_language' %}" method="post">
{% csrf_token %}
<input name="next" type="hidden" value="{{ redirect_to }}" />
<select name="language">
{% get_language_info_list for LANGUAGES as languages %}
{% for language in languages %}
<option value="{{ language.code }}"{% if language.code == LANGUAGE_CODE %} selected="selected"{% endif %}>
    {{ language.name_local }} ({{ language.code }})
</option>
{% endfor %}
</select>
<input type="submit" value="Go" />
</form>

Reset Migrations

1) Fake migrations back to 0

./manage.py migrate app zero --fake

2) Delete migrations files

rm "app/migrations/*"

3) Create new migration file

./manage.py makemigrations app

4) Pretend to run the new migration

./manage.py migrate app --fake

Check for connected signals listeners

 from django.db.models.signals import *
 for signal in [pre_save, pre_init, pre_delete, post_save, post_delete, post_init]:
     # print a List of connected listeners
     print(signal.receivers)

Use Django ORM from python script

import os
import django
os.environ["DJANGO_SETTINGS_MODULE"] = 'project.settings'
django.setup()
from .models import

or

python manage.py shell < script.py