Django Reference Sheet

#urls.py
from django.urls import path, include
from . import views

urlpatterns = [
    path('', views. , name=""),
]

#Media settings for URLs.py
from django.conf import settings
from django.conf.urls.static import static

if settings.DEBUG:
    urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

#Media and Static settings config

STATIC_ROOT = os.path.join(BASE_DIR, 'static')
STATIC_URL = '/static/'
STATICFILES_DIRS = [
    os.path.join(BASE_DIR, 'somehunt/static/')
]

MEDIA_ROOT = os.path.join(BASE_DIR, 'media')
MEDIA_URL = '/media/'

LOGIN_URL = 'login'


#installed_apps adding -> settings.py
INSTALLED_APPS = [
    'blogs.apps.BlogsConfig',
    'jobs.apps.JobsConfig',
]

#Templates directory adding -> settings.py
TEMPLATES = [
    {
        'DIRS': ['tempates'],
    },
]

#Database settings for postgres -> settings.py
DATABASES = {
    'default': {
        # 'ENGINE': 'django.db.backends.sqlite3',
        # 'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
        # 'ENGINE': 'django.db.backends.sqlite3',
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'producthuntdb',
        'USER': 'postgres',
        'PASSWORD': 'testpassword',
        'HOST': 'localhost',
        'PORT': '5432'
    }
}


# register model
from django.contrib import admin
from .models import Product
# Register your models here.
admin.site.register(Product)

#templates
{% extends 'base.html' %}

{% block body%}

{% endblock body %}

#staticfiles
{% load staticfiles %}

# views(basic)
def home(request):
    return render(request, 'products/home.html')
# include path
path('', include('products.urls')),

# User auth import

# Auth
from django.contrib.auth import auth
auth.login(request, user)
auth.logout(request)
# get models from user using key
from django.contrib.auth.models import User
user = User.objects.create_user(username=request.POST['username'], password=request.POST['password1'])
user = User.objects.get(username=request.POST['username'])

# Model exception
except User.DoesNotExist

# Create and save model:
ModelName.save()

# if authenticated templates check
{{ if user.is_authenticated }}



# logout basehtml code snippit
{% if user.is_authenticated %}
    <a href="javascript:{document.getElementById('logout').submit()}">Logout</a>
    <form action="{% url 'logout' %}" method="POST" id='logout'>
        {% csrf_token %}
        <input type="hidden">
    </form>
    {% else %}
        <a href="{% url 'login' %}">Login</a>
{% endif %}






#commands
python manage.py runserver
python manage.py startapp accounts
python manage.py makemigrations
python manage.py migrate
python manage.py createsuperuser

mkdir templates
django-admin startproject someproject
python manage.py collectstatic






# Register View
from django.shortcuts import render, redirect
from django.contrib.auth.models import User
from django.contrib import auth
# Create your views here.

def signup(request):
    if request.method == "POST":
        if request.POST['password1'] == request.POST['password2']:
            try:
                user = User.objects.get(username=request.POST['username'])
                return render(request, 'account/signup.html', {'error': 'Already ase!', 'tag':'danger'})
            except User.DoesNotExist:
                user = User.objects.create_user(username=request.POST['username'], password=request.POST['password1'])
                auth.login(request, user)
                return redirect('home')
        else:
            return render(request, 'account/signup.html', {'error': 'Password ase!', 'tag':'danger'})

    else:
        return render(request, 'account/signup.html')


#Signup HTML
from django.shortcuts import render, redirect
from django.contrib.auth.models import User
from django.contrib import auth
# Create your views here.

def signup(request):
    if request.method == "POST":
        if request.POST['password1'] == request.POST['password2']:
            try:
                user = User.objects.get(username=request.POST['username'])
                return render(request, 'account/signup.html', {'message': 'Already ase!', 'tag':'danger'})
            except User.DoesNotExist:
                user = User.objects.create_user(username=request.POST['username'], password=request.POST['password1'])
                auth.login(request, user)
                return render(request, 'product/home.html', {'message': 'Account Created!', 'tag':'success'})
        else:
            return render(request, 'account/signup.html', {'message': 'Password ase!', 'tag':'danger'})

    else:
        return render(request, 'account/signup.html')


#LOOOOOOOOOOOOOOOOOOOOGGGGGGGGGGGGGGGIIIIIIINNNNNN VIWEW
def login(request):
    if request.method == "POST":
        user = auth.authenticate(username=request.POST['username'], password=request.POST['password'])
        if user is not None:
            auth.login(request, user)
            return render(request, 'products/home.html', {'error': user.username})
        else:
            return render(request, 'accounts/login.html', {'error': 'Username or password is incorrect!'})
    else:
        return render(request, 'accounts/login.html')



#LLLLLLLLLLLLLOOOOOOOOOOOOOOGGGGGGGGGINNNNNNNNNN
{% extends 'base.html' %}

{% block content %}
{% if error %}
    <p>{{error}}</p>
{% endif %}

<form class="form" action="{% url 'login' %}" method="POST">
    {% csrf_token %}
    <label for="username">Username</label><br>
    <input type="text" name="username"><br>
    <label for="password">Password</label><br>
    <input type="password" name="password"><br>
    <br>
    <input class="btn btn-primary" type="submit" value="Login">
</form>
{% endblock content %}





#LOGOUT BASE
 <li class="nav-item">
    <a class="nav-link" href="javascript:{document.getElementById('logout').submit()}">Logout</a>
  </li>
  <form id="logout" action="{% url 'logout' %}" method="POST">
    {% csrf_token %}
    <input type="hidden">
  </form>


#Logout View
def logout(request):
    if request.method == "POST":
        auth.logout(request)
        return redirect('home')



#Product Model

from django.shortcuts import render, redirect, get_object_or_404
from .models import Product
from django.utils import timezone
from django.contrib.auth.decorators import login_required
# Create your views here.
def home(request):
    products = Product.objects
    return render(request, 'product/home.html', {'products':products})

@login_required
def create(request):
    if request.method == "POST":
        if request.POST['title'] and request.POST['body'] and request.POST['url'] and request.FILES['image'] and request.FILES['icon']:
            product = Product()
            product.title = request.POST['title']
            product.body = request.POST['body']
            product.icon = request.FILES['icon']
            product.image = request.FILES['image']
            product.pub_date = timezone.datetime.now()
            product.hunter = request.user
            if request.POST['url'].startswith('http://') or request.POST['url'].startswith('https://'):
                product.url = request.POST['url']
            else:
                product.url = 'http://'+request.POST['url']

            product.save()

            return redirect('/product/'+str(product.id))
        else:
            return render(request, 'product/create.html', {"error":"all fields are required!"})

    else:
        return render(request, 'product/create.html')


#Create Product
@login_required
def create(request):
    if request.method == "POST":
        if request.POST['title'] and request.POST['body'] and request.POST['url'] and request.FILES['image'] and request.FILES['icon']:
            product = Product()
            product.title = request.POST['title']
            product.body = request.POST['body']
            product.icon = request.FILES['icon']
            product.image = request.FILES['image']
            product.pub_date = timezone.datetime.now()
            product.hunter = request.user
            if request.POST['url'].startswith('http://') or request.POST['url'].startswith('https://'):
                product.url = request.POST['url']
            else:
                product.url = 'http://'+request.POST['url']

            product.save()

            return redirect('/product/'+str(product.id))
        else:
            return render(request, 'product/create.html', {"error":"all fields are required!"})

    else:
        return render(request, 'product/create.html')

#Show detail of the product
def detail(request, product_id):
    product = get_object_or_404(Product, pk=product_id)
    return render(request, 'product/detail.html', {'product':product})

#Upvote a product
@login_required(login_url = 'login')
def upvote(request, product_id):
    if request.method == "POST":
        product = get_object_or_404(Product, pk=product_id)
        product.votes_total += 1
        product.save()
        return redirect('/products/'+str(product.id))
    else:
        pass

#Product Detail Page
{% extends 'base.html' %}

{% block content %}
<div class="row">
    <div class="col-2">
        <img src="{{product.icon.url}}" class="img-fluid" >
    </div>
    <div class="col-10">
        <a href="{{product.url}}"><h1>{{product.title}}</h1></a>
    </div>

</div>

<div class="row">
    <div class="col-8">
        <img src="{{product.image.url}}" class="img-fluid" alt="" >
    </div>
    <div class="col-4">
        <a href="javascript:{document.getElementById('upvote').submit()}"><button  class="btn btn-primary btn-lg btn-block">Upvote {{product.votes_total}}</button></a>
    </div>
</div>

<div class="row">
    <div class="col-4">
        <h4>{{product.hunter.username}}</h4>
    </div>
    <div class="col-4 text-right">
        <h4>{{ product.pub_date_pretty }}</h4>
    </div>
</div>

<div class="row">
    <div class="col-8">
        <p>{{product.body}}</p>
    </div>
</div>


<form id='upvote' action="{% url 'upvote' product.id %}" method="POST">
    {% csrf_token %}
    <input type="hidden">
</form>
{% endblock content %}


#Product URLS
from django.urls import path, include
from . import views

urlpatterns = [
    path('', views.home , name="home"),

    path('create/', views.create, name = 'create'),
    path('<int:product_id>/', views.detail, name = 'detail'),
    path('<int:product_id>/upvote/', views.upvote, name = 'upvote')

]