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django basics from django girls blog
setup
creating a project |
django-admin startproject mysite .
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changing settings |
edit mysite/settings.py |
database setup |
python3 manage.py migrate
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run the server |
python3 manage.py runserver
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and in browser: |
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test shit in an interactive console |
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apps
creating an application |
python3 manage.py startapp blog
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add the app name to INSTALLED_APPS
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'blog.apps.BlogConfig'
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models are kept in models.py |
add, edit and delete model in admin.py |
django querysets
getting the model classes |
from app_name.models import model_name
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getting the user model |
from django.contrib.auth.models import User
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see all objects of a certain model |
Class_name.objects.all()
(is iterable) |
create an object |
Class_name.objects.create(attributes)
you don't have to save for it to be reflected |
accessing the object via attribute |
Class_name.objects.get(attr="value")
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filtering (can return multiple, iterable) |
Class_name.objects.filter(attr="value")
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filtering (contains) |
Class_name.objects.filter(title__contains="phrase")
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published_date__lte=timezone.now()
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ordering |
Class_name.objects.order_by("attribute")
"-attr" does the reverse |
you can combine ordering and filtering |
Class_name.objects.does this first.does this second
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delete |
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forms
import |
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from .models import model_name
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security
login decorator |
from django.contrib.auth.decorators import login_required
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model attributes
model attribute |
description |
args |
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text with a limited number of characters |
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text field with unlimited content |
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datetime field |
default, blank, null, auto_now_add
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databases
creating a database |
python3 manage.py migrate
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update changes to database |
python3 manage.py makemigrations app_name
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migrate |
python3 manage.py migrate app_name
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register database in app_name/admin.py |
admin.site.register(Model_name)
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admin
register a model |
admin.site.register(Post)
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create superuser |
python3 manage.py createsuperuser
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pythonanywhere deployment
1. create the api token |
2. new bash console |
3. in bash: pip3 install --user pythonanywhere
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4. pa_autoconfigure_django.py --python=3.8 repo_link.git
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5. to update website, go to your directory and pull code |
6. reload at web |
7. workon your_directory
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8. python3 manage.py collectstatic
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basic styling
get bootstrap |
<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
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<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap-theme.min.css">
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add static files |
make a static folder with css files inside app_name folder |
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<link rel="stylesheet" href="{% static 'css/blog.css' %}">
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create a block |
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block content |
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connect a block to the base |
{% extends 'blog/base.html' %}
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link a url within a site |
a href="{% url 'url_name' pk=post.pk %}"
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where pk stands for primary key |
to use the link |
path('whatever/<int:pk>/', views.view_name, name='*url_name')
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