Django Telusko

Here you can find two applications, first one is a simple django based calculator (using forms and POST requests), and the second app is TRAVELLO website.

If you want to run the project you must create migrations for each apps:

     $ python manage.py makemigrations my_app
     $ python manage.py makemigrations travello
     $ python manage.py migrate

By Rustam-Z

MY NOTES:

• my_app = the name of app
• my_project = the name of project
• python manage.py help
• Creating a virtual environment and creating a Django project:

python -m venv my_env
.\my_env\Scripts\activate
pip install Django
django-admin startproject my_project
python manage.py startapp my_app

• include my_app/urls.py in the ROOT urls.py
• Create migratioins

python manage.py migrate
python manage.py sqlmigrate my_app 0001
python manage.py makemigrations my_app

Create a folder 'templates', then go to 'settings.py' and in TEMPLATES->DIRS add

[os.path.join(BASE_DIR, 'templates')],

• After change my_app/views.py for rendering 'index.html'

return render(request, 'index.html')

• in index.html then go to my_app/urls.py add path('add', views.add, name='add'), then in views.py describe the function and render.html:

def add(request):
     val1=request.POST["num1"]
     val2=request.POST["num2"]
     res=int(val1)+int(val2)
     return render(request, 'result.html', {'result':res})

• in index.html do not forget to include {% csrf_token %} for security

INFO! MVT/MTV Model-View-Template, Data-Logic-Layout -- We have Model(DataBase) and Template(with DTL Django template language), data from user comes as object and who will link this? urls is linking, so the main logic is in the views.

• static file creation in settings.py

  STATIC_URL='/static/' 
  STATICFILES_DIRS=[os.path.join(BASE_DIR, 'static')]
  STATIC_ROOT=os.path.join(BASE_DIR, 'assets')
  ==>OR<==
  STATIC_URL = '/static/'
  STATIC_DIR = os.path.join(BASE_DIR, 'static')
  STATICFILES_DIRS = [STATIC_DIR]

python manage.py collectstatic

• change the directory and names in .html files:

  {% load static %}
  <img src="{% static "my_app/example.jpg" %}" alt="My image">

use blocks, for loop, if/else statement of Django into .html after creating a MODEL in next steps

1. Django ORM->App<-->DataBase is being created automaticly
2. Download PostgreSQL and PGAdmin 4: Password: Rr87654321 and 0999
3. then create a database in PG admin, do not forget NAME!
4. go to settings.py->DATABASES change into

  DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'telusko', 
        'USER': 'postgres',
        'PASSWORD': 'Rr87654321',
        'HOST': 'localhost',
      }
  }

5. how to connect Python with PostgreSQL? pip install psycopg2
6. THEN CREATE A MODEL IN models.py CharField, ImageField ...
7. add an app in list of INSTALLED_APPS

python manage.py makemigrations
python manage.py sqlmigrate my_app 0001
python manage.py migrate

ADMIN PANEL admin.py -> steps

1. Haha, Good Job :) Do not forget to register models in admin.py:

  from .models import [ClassName-it is ur model]
  admin.site.register(ClassName)

python manage.py createsuperuser

3. For the Images we must create a path for media, it is the location of media file added from Admin panel
``` python
  MEDIA_URL = '/media/'
  MEDIA_ROOT = os.path.join(BASE_DIR, 'media')

4. in root urls.py add following

  from django.conf import settings
  from django.conf.urls.static import static
  urlpatterns = urlpatterns + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

5. in .html we must use smth.smth.url in the end
6. travello/views.py

  from django.shortcuts import render
  from travello.models import Destination
  def index(request):
      dests = Destination.objects.all()
      return render(request, "index.html", {'dests' : dests} )

USER REGISTRATION with forms: id--password--name--mail-> register.html

  <form action="register" method="POST">
      {% csrf_token %}
      <input type="text" name="first_name" placeholder="First name">
      ... ...
  </form>

2. ORM of Django has the build in model for User-> accounts/views.py

  from django.contrib.auth.models import User, auth
  if request.method=='POST':
        first_name = request.POST['first_name']
        ... ...