| from django.db import models | |
| from django.utils import timezone | |
| """ Source: https://twitter.com/JackDLinke/status/1578435998492475392/photo/1""" | |
| class ItemQuerySet(self): | |
| """Used to return a QuerySet that has been filtered""" | |
| def expired_items(self): | |
| return self.filter(expired_isnull=True) |
| Title | Author | Genre | Height | Publisher | |
|---|---|---|---|---|---|
| Fundamentals of Wavelets | Goswami, Jaideva | signal_processing | 228 | Wiley | |
| Data Smart | Foreman, John | data_science | 235 | Wiley | |
| God Created the Integers | Hawking, Stephen | mathematics | 197 | Penguin | |
| Superfreakonomics | Dubner, Stephen | economics | 179 | HarperCollins | |
| Orientalism | Said, Edward | history | 197 | Penguin | |
| Nature of Statistical Learning Theory, The | Vapnik, Vladimir | data_science | 230 | Springer | |
| Integration of the Indian States | Menon, V P | history | 217 | Orient Blackswan | |
| Drunkard's Walk, The | Mlodinow, Leonard | science | 197 | Penguin | |
| Image Processing & Mathematical Morphology | Shih, Frank | signal_processing | 241 | CRC |
| # This file must be saved in app/management/commands/upload_csv.py | |
| # https://docs.djangoproject.com/en/3.2/howto/custom-management-commands/ | |
| from chinook.models import Playlist, PlaylistTrack, Track | |
| from django.core.management import BaseCommand | |
| def get_playlisttrack(): | |
| data = [] | |
| with open('PlaylistTrack.csv') as infile: | |
| next(infile) |
In this guide I will go through all the steps to create a VPS, secure it and deploy a Django application. This is a summarized document from this digital ocean doc
Any commands with "$" at the beginning run on your local machine and any "#" run when logged into the server
Use this link and get $10 free. Just select the $5 plan unless this a production app.
| from functools import partial | |
| def placeholderify(form=None, fields=None): | |
| """ | |
| A decorator for Django forms that sets a `placeholder` attribute to all | |
| fields. Each field's label is used as a placeholder. | |
| Use it like so: | |
| from .models import Post, Category | |
| from .decorators import action_form | |
| class PostCategoryForm(forms.Form): | |
| title = 'Update category for the selected posts' | |
| category = forms.ModelChoiceField(queryset=Category.objects.all()) | |
| @admin.register(Post) |
| import random | |
| from datetime import datetime, timedelta | |
| min_year=1900 | |
| max_year=datetime.now().year | |
| start = datetime(min_year, 1, 1, 00, 00, 00) | |
| years = max_year - min_year+1 | |
| end = start + timedelta(days=365 * years) |
| from datetime import datetime | |
| from random import randint | |
| import pytz | |
| from django.contrib.auth import get_user_model | |
| from django.core.management.base import BaseCommand | |
| from django.utils import timezone | |
| from faker import Faker | |
| fake = Faker(["en_CA"]) |
| {% extends "base.html" %} | |
| {% block content %} | |
| <form method="post">{% csrf_token %} | |
| {{ forms.subscription }} | |
| <input type="submit" value="Subscribe"> | |
| </form> | |
| <form method="post">{% csrf_token %} | |
| {{ forms.contact }} | |
| <input type="submit" value="Send"> |
| from django.contrib.postgres.search import SearchVector | |
| from django.core.management import BaseCommand | |
| from myapp.models import Article | |
| class Command(BaseCommand): | |
| # Provide help at command prompt for user | |
| help = "Add search vector articles" | |
| # A command must define handle() |