Django Paths/Routes with Function-Based View Rendering / Urls

// models.py
from django.db.models.fields import FloatField

class Product(models.Model):
    title = models.CharField(max_length=225)
    price = models.FloatField()
    discount_percent = FloatField(default=0) # Assigning it a default value of 0 so it doesn't throw a 'NoneType' error when it's null.
  
    @property
    def discount(self):
        if self.discount_percent > 0:
            discounted_price = self.price - self.price * self.discount_percent / 100
            return discounted_price

class OrderItem(models.Model):
    product = models.ForeignKey(Product, on_delete=models.SET_NULL, null=True)
    order = models.ForeignKey(Order, on_delete=models.SET_NULL, null=True)
    quantity = models.IntegerField(default=0, null=True, blank=True)
	
	# get_total function has to be updated too to calculate using the correct current price
    @property
    def get_total(self):
        if self.product.discount_percent > 0:
            price_now = self.product.price - self.product.price * self.product.discount_percent / 100
        else:
            price_now = self.product.price

        total = price_now * self.quantity
        return total

// Your template
{% if product.discount_percent %}
                <h4 class="product__price--original">₾{{ product.price|floatformat:2 }}</h4>
                <h4 class="product__price--discounted">₾{{ product.discount|floatformat:2 }}</h4>
                {% else %}  
                <h4>₾{{ product.price|floatformat:2 }}</h4>
                {% endif %}
                
// Here's some Sass too, if you need it
.product__price {
  &--original {
    text-decoration: line-through;
  }
  &--discounted {
    color: green;
  }
}

# Git Commands

## git init
initialize git and create a new local repository

## git add .
track all the files in the local repo for changes

## git add filename
track a specific file in the repo for changes

## git commit -m "first commit" -m "the description"
take a snapshot of the files in the repo

## git status
check the status of your code

## git remote add origin https-link
add a new remote repository

## git push origin master
push the local repository to github

## git push -u origin master
push the local repository to github and also set upstream (enables you to use git push only in future)

## git branch
check the current branch and available branches

## git checkout -b new-branch-name
go to another new branch

## git checkout existing-branch
switch to an existing branch

## git diff feature
see the difference between files you want to merge

## git config --global user.name "[name]"
Sets the name you want attached to your commit transactions

## git config --global user.email "[email address]"
Sets the email you want attached to your commit transactions

## git config --global color.ui auto
Enables helpful colorization of command line output

## git push
use this cmd when pushing a new branch to see how it should be done

## git pull
when upstream is set , to pull from github when changes made on the github and want them to reflect on local machine

## git pull origin master
to pull from github when changes made on the github and want them to reflect on local machine

## git branch -d branch-name
delete a branch

## git commit -am "message"
commit and add at the same time

SET FOREIGN_KEY_CHECKS=0;

# make sure that you save the file when reloading changes in port 8000
# check the path you defined in views.py, and for urls.py


# views
def about(request):
    return render(request, 'about.html')
    
# urls

urlpatterns [
path('', views.index, name='index'),
path('templates/about.html/', views.about, name="about")
]

// template.html
<link rel="stylesheet" href="{% static '/bulma-css/bulma-divider.min.css' %}" type="text/css">
<link rel="stylesheet" href="{% static '/bulma-css/bulma-switch.min.css' %}" type="text/css"> 
<link rel="stylesheet" href="{% static '/bulma-css/bulma.min.css' %}" type="text/css"> 
<link rel="stylesheet" href="{% static '/css/main.css' %}" type="text/css"> 


// settings.py

STATIC_URL = '/static/'

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

// views.py

def template(request, self):
	return render(request, "template.html")
    
//  urls.py

urlpatterns [] + static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)

    

{% if request.resolver_match.url_name == 'home' %} active {% endif %}

//template

{% for contact in page_obj %}
    {# Each "contact" is a Contact model object. #}
    {{ contact.full_name|upper }}<br>
    ...
{% endfor %}

<div class="pagination">
    <span class="step-links">
        {% if page_obj.has_previous %}
            <a href="?page=1">&laquo; first</a>
            <a href="?page={{ page_obj.previous_page_number }}">previous</a>
        {% endif %}

        <span class="current">
            Page {{ page_obj.number }} of {{ page_obj.paginator.num_pages }}.
        </span>

        {% if page_obj.has_next %}
            <a href="?page={{ page_obj.next_page_number }}">next</a>
            <a href="?page={{ page_obj.paginator.num_pages }}">last &raquo;</a>
        {% endif %}
    </span>
</div>
         

//views.py
         
from django.core.paginator import Paginator
from django.shortcuts import render

from myapp.models import Contact

def listing(request):
    contact_list = Contact.objects.all()
    paginator = Paginator(contact_list, 25) # Show 25 contacts per page.

    page_number = request.GET.get('page')
    page_obj = paginator.get_page(page_number)
    return render(request, 'list.html', {'page_obj': page_obj})       

## generate the requirements file
pip freeze > requirements.txt

## specify where to store django static files just above the static url
STATIC_ROOT = BASE_DIR / 'staticfiles'

## tell heroku how to serve them with whitenoise
add this in settings.MIDDLEWARE below security
'whitenoise.middleware.WhiteNoiseMiddleware',

## add allowed hosts, name of app and local host url example
ALLOWED_HOSTS = ['text-test-heroku.herokuapp.com', '127.0.0.1:8000']

## create a runtime.txt file to put the python version required-
python-3.7.9

## create a Procfile file to say from where it would beserved
(make sure to have installed gunicorn in pip)
web: gunicorn MovieReview.wsgi --log-file -
MovieReview is folder where wsgi is located

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': 'dojoreads_db',
        'USER': 'postgres',
        'PASSWORD': 'root',
        'HOST': '127.0.0.1',
        'PORT': '5432',
    }
}

created_at = models.DateTimeField(auto_now_add=True)
updated_at = models.DateTimeField(auto_now=True)

if reg_form.is_valid():
            nuevo_usuario = reg_form.save(commit=False)
            pw_hash = bcrypt.hashpw(clave.encode(), bcrypt.gensalt()).decode() 
            nuevo_usuario.password = pw_hash
            nuevo_usuario.save()

{% include "cms/seminare.html" %}

django-admin startproject mysite

python manage.py startapp myapp

    def create(self, validated_data):
        # print(validated_data)
        tags = validated_data.pop("tags")
        language = validated_data.pop("language")
        snip = Snip(**validated_data)
        # languageObj, created = Language.objects.get_or_create(**language)
        snip.language = language
        snip.save()
        for tag in tags:
            # tagObj, created = Tag.objects.get_or_create(**tag)
            # print(tagObj)
            snip.tags.add(tag)
        return ShallowSnipSerializer(snip).data